Wrist auxiliary blood sampling device

Abstract

A wrist auxiliary blood sampling device comprises a support which comprises a base, a mounting part and a supporting part, the base is provided with a positioning part used for placing the wrist of a patient, and the mounting part is provided with a laser indicating device used for projecting laser towards the wrist of the patient; the pulsation sensing assembly comprises a pressure sensor, and the pressure sensor is used for being in contact with the wrist of the patient so as to collect arterial pulsation intensity information of different positions of the wrist of the patient; the pulsation sensing assembly is arranged on the base and located on one side of the positioning part, and the pulsation sensing assembly is movably connected with the base; the control module is in electric signal connection with the pressure sensor and the laser indicating device; the control module is used for controlling the laser indicating device to project laser to the strongest arterial pulse point according to arterial pulse intensity information, collected by the pressure sensor, of the wrist of the patient. The auxiliary wrist blood sampling device can ensure the accuracy, reliability and convenience of artery blood sampling and improve the efficiency of artery blood sampling.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a wrist auxiliary blood sampling device. Background Art

[0002] Currently, blood testing is a common testing method in hospitals and is also an essential testing step. Before the blood test, blood needs to be drawn from the patient. Blood collection is divided into arterial blood collection and venous blood collection. Among them, radial artery blood collection is a common arterial blood collection method (the radial artery is located at the wrist of the human body).

[0003] Because the radial artery is buried beneath the skin and difficult to visually observe, current clinical practice primarily relies on manual touch and determination. During blood collection, medical personnel palpate the pulse to determine the radial artery's location before puncturing the artery with a needle. Manual radial artery puncture and blood collection rely heavily on the operator's experience and skill, making it difficult to achieve efficient and accurate blood collection. Furthermore, incorrect needle insertion can lead to failed blood collection, further exacerbating the patient's pain. Utility Model Content

[0004] The purpose of the utility model is to provide a wrist auxiliary blood sampling device, which can ensure the accuracy, reliability and convenience of arterial blood sampling and improve the efficiency of arterial blood sampling.

[0005] The utility model provides a wrist auxiliary blood sampling device, comprising:

[0006] A bracket comprising a base, a mounting portion disposed above the base, and a support portion connected between the base and the mounting portion, wherein the base is provided with a positioning portion for resting a patient's wrist, and the mounting portion is provided with a laser pointer for projecting a laser toward the patient's wrist;

[0007] a pulsation sensing assembly comprising a pressure sensor configured to contact a patient's wrist to collect arterial pulsation intensity information at various locations on the patient's wrist; the pulsation sensing assembly being disposed on the base and positioned to one side of the positioning portion, the pulsation sensing assembly being movably connected to the base so as to be positioned above the positioning portion when collecting arterial pulsation intensity information and to move to one side of the positioning portion after completing the collection of arterial pulsation intensity information;

[0008] A control module is electrically connected to the pressure sensor and the laser pointing device respectively; the control module is used to control the laser pointing device to project laser light toward the strongest point of arterial pulsation based on the arterial pulsation intensity information of the patient's wrist collected by the pressure sensor.

[0009] In an implementable mode, the pressure sensor comprises a plurality of pressure sensing units arranged in an array, each of the pressure sensing units is configured to collect arterial pulse intensity information at different positions of the patient's wrist, and the control module is electrically connected with the plurality of pressure sensing units; the control module is configured to control the laser indicating device to project laser light to the position of the pressure sensing unit with the largest measured pressure value according to the arterial pulse intensity information collected by each of the pressure sensing units.

[0010] In an implementable mode, the laser indicating device comprises a plurality of laser indicators arranged in an array, the plurality of laser indicators correspond to the plurality of pressure sensing units in a top-to-bottom manner, and each of the laser indicators is capable of projecting laser light to the position of the corresponding pressure sensing unit; the control module is electrically connected with the plurality of laser indicators, and the control module is configured to control the laser indicator corresponding to the pressure sensing unit with the largest measured pressure value to emit laser light.

[0011] In an implementable mode, the laser indicating device further comprises a circuit board fixed on the mounting portion, the plurality of laser indicators are arranged on the circuit board and electrically connected with the circuit board, and the control module is electrically connected with the circuit board.

[0012] In an implementable mode, the laser indicating device comprises a rotating driving module and a laser indicator, the rotating driving module is connected with the mounting portion, the laser indicator is connected with the rotating driving module, and the rotating driving module is configured to drive the laser indicator to rotate; the control module is electrically connected with the rotating driving module and the laser indicator, and the control module is configured to control the rotating movement of the rotating driving module so as to make the laser indicator project laser light to the point with the strongest arterial pulse.

[0013] In an implementable mode, the rotating driving module comprises a first rotating driving device and a second rotating driving device, the first rotating driving device is connected with the mounting portion, the second rotating driving device is connected with the output shaft of the first rotating driving device, and the laser indicator is connected with the output shaft of the second rotating driving device; the control module is electrically connected with the first rotating driving device and the second rotating driving device; the first rotating driving device is configured to drive the second rotating driving device and the laser indicator to rotate around a first direction, and the second rotating driving device is configured to drive the laser indicator to rotate around a second direction; wherein the first direction is perpendicular to the second direction.

[0014] In one feasible embodiment, the laser pointing device includes a horizontal movement drive module and a laser pointer, the horizontal movement drive module is connected to the mounting portion, the laser pointer is connected to the horizontal movement drive module, and the horizontal movement drive module is used to drive the laser pointer to move horizontally; the control module is electrically connected to the horizontal movement drive module and the laser pointer respectively, and the control module is used to control the horizontal movement of the horizontal movement drive module so that the laser pointer projects laser light toward the strongest point of arterial pulsation.

[0015] In one feasible manner, the horizontal movement drive module includes a first horizontal movement drive device and a second horizontal movement drive device, the first horizontal movement drive device is connected to the mounting part, the second horizontal movement drive device is connected to the first horizontal movement drive device, and the laser pointer is connected to the second horizontal movement drive device; the control module is electrically signal-connected to the first horizontal movement drive device and the second horizontal movement drive device, respectively; the first horizontal movement drive device is used to drive the second horizontal movement drive device and the laser pointer to move horizontally along a third direction, and the second horizontal movement drive device is used to drive the laser pointer to move horizontally along a fourth direction; wherein, the third direction is perpendicular to the fourth direction.

[0016] In one feasible embodiment, the pulsation sensing component further includes a fastening piece with an arched structure, the pressure sensor is arranged on the inner wall of the fastening piece, and the pressure sensor is an arc-shaped structure, the fastening piece is located on one side of the positioning portion and is rotatably connected to the base; the fastening piece can cover the positioning portion when rotating toward the side of the positioning portion, and open the positioning portion when rotating away from the side of the positioning portion; the pressure sensor can contact the patient's wrist when the fastening piece covers the positioning portion.

[0017] In one feasible manner, a snap portion is provided on the base, and the snap portion is located on a side of the positioning portion away from the fastening member. A snap structure is provided on one end of the fastening member close to the snap portion, and the snap structure can be snapped and fixed with the snap portion.

[0018] In one achievable manner, the positioning portion includes a hand pillow pad, and the hand pillow pad is provided with a positioning groove for the patient's wrist to rest on.

[0019] In one feasible manner, the hand rest pad is movably arranged on the base, the hand rest pad can move up and down relative to the base, and an elastic member for adjusting the height of the hand rest pad is provided between the hand rest pad and the base.

[0020] The wrist-assisted blood collection device provided by the present invention is provided with a positioning part, a laser pointer device, a pulsation sensing component and a control module. When the patient's wrist is placed on the positioning part, the pressure sensor in the pulsation sensing component is used to collect arterial pulsation intensity information at different positions of the patient's wrist. Then, the control module extracts the strongest point of arterial pulsation based on the arterial pulsation intensity information collected by the pressure sensor, and calculates the position of the strongest point of arterial pulsation based on this. Then, based on the calculated position of the strongest point of arterial pulsation, the laser pointer device is controlled to project a laser to the strongest point of arterial pulsation and form a light spot. Medical staff can insert a needle to collect blood according to the light spot projected onto the patient's wrist skin. The wrist-assisted blood collection device makes the needle insertion point during blood collection visual, greatly improving the accuracy, reliability, convenience and efficiency of arterial blood collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view of the wrist auxiliary blood collection device in an embodiment of the present utility model.

[0022] Figure 2 This is a schematic diagram of the assembly structure of the laser pointing device and the mounting portion in an embodiment of the present utility model.

[0023] Figure 3 for Figure 2 Bottom view of .

[0024] Figure 4 Schematic diagram of the structure of the pressure sensor in the embodiment of the present utility model.

[0025] Figure 5 Schematic diagram of electrical signal connection among the control module, pressure sensor and laser pointing device in the embodiment of the present utility model.

[0026] Figure 6 This is a schematic diagram of the structure of the wrist auxiliary blood sampling device in an embodiment of the present invention when collecting arterial pulsation intensity information from a patient's wrist.

[0027] Figure 7 This is a schematic diagram of the structure of the wrist-assisted blood collection device in an embodiment of the present invention when projecting laser light onto the patient's wrist.

[0028] Figure 8 This is a schematic diagram of the assembly structure of the laser pointing device and the mounting portion in another embodiment of the present invention.

[0029] Figure 9 for Figure 8 side view.

[0030] Figure 10 This is a schematic diagram of the assembly structure of the laser pointing device and the mounting portion in another embodiment of the present invention.

[0031] Figure 11 is a side view. Figure 10 is a side view. DETAILED DESCRIPTION

[0032] The specific embodiments of the present application will be further described in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.

[0033] The terms "first", "second", "third", "fourth" and the like (if any) in the description and claims of the present application are used to distinguish similar objects, and do not necessarily have to be used to describe a particular order or sequence.

[0034] The terms "up", "down", "left", "right", "front", "back", "top", "bottom" and the like (if any) in the description and claims of the present application are defined by the position of the structure in the drawing and the position of the structure relative to each other, only to express the technical solution clearly and conveniently. It should be understood that the use of directional terms should not limit the scope of the present application.

[0035] As shown in Figures 1 to 7 The wrist auxiliary blood sampling device provided by the embodiment of the present application is used for arterial blood sampling, and is especially suitable for radial artery blood sampling of the wrist 6 Figure 6 and Figure 7 The wrist auxiliary blood sampling device comprises:

[0036] A support 1 comprising a base 11, a mounting portion 12 arranged above the base 11, and a support portion 13 connected between the base 11 and the mounting portion 12, wherein the base 11 is provided with a positioning portion 2 for resting the wrist 6 of a patient, and the mounting portion 12 is provided with a laser indication device 3 for projecting laser towards the wrist 6 of the patient (i.e. projecting laser towards the positioning portion 2);

[0037] a pulsation sensing assembly 4, comprising a pressure sensor 41, which is configured to contact the patient's wrist 6 to collect arterial pulsation intensity information at different locations on the patient's wrist 6 (specifically, the greater the pressure value at a certain location measured by the pressure sensor 41, the stronger the arterial pulsation at that location); the pulsation sensing assembly 4 is disposed on the base 11 and is located on one side of the positioning portion 2. The pulsation sensing assembly 4 is movably connected to the base 11 so that the pulsation sensing assembly 4 can be located above the positioning portion 2 when collecting arterial pulsation intensity information (i.e., the pulsation sensing assembly 4 is located above the patient's wrist 6 so that the pressure sensor 41 can contact the patient's wrist 6), and moves (the movement is not limited to rotation, sliding, etc.) to the side of the positioning portion 2 after completing the collection of the arterial pulsation intensity information (to prevent the pulsation sensing assembly 4 from blocking the laser projected by the laser pointer 3, so that the laser projected by the laser pointer 3 can be irradiated onto the patient's wrist 6);

[0038] The control module 5 is electrically connected to the pressure sensor 41 and the laser pointing device 3. The control module 5 is configured to control the laser pointing device 3 to project a laser beam toward the point of strongest arterial pulsation based on information about arterial pulsation intensity at different locations on the patient's wrist 6 collected by the pressure sensor 41. The control module 5 may be a microcontroller (MCU) and may be located within the base 11 or within the mounting portion 12.

[0039] The wrist-assisted blood collection device provided by the embodiment of the present invention is provided with a positioning part 2, a laser pointer device 3, a pulsation sensing component 4 and a control module 5. When the patient's wrist 6 is placed on the positioning part 2, the pressure sensor 41 in the pulsation sensing component 4 is used to collect the arterial pulsation intensity information of different positions of the patient's wrist 6. Then, the control module 5 extracts the strongest point of arterial pulsation (i.e., the position where the pressure sensor 41 measures the maximum pressure value) based on the arterial pulsation intensity information collected by the pressure sensor 41, and calculates the position of the strongest point of arterial pulsation based on this. Then, according to the calculated position of the strongest point of arterial pulsation, the laser pointer device 3 is controlled to project a laser to the strongest point of arterial pulsation on the patient's wrist 6 and form a light spot. Medical staff can insert a needle to collect blood according to the light spot projected on the skin of the patient's wrist 6. The wrist-assisted blood collection device makes the needle insertion point during blood collection visual, greatly improving the accuracy, reliability, convenience and efficiency of arterial blood collection.

[0040] like Figure 4As shown, as one embodiment, pressure sensor 41 is a distributed pressure sensor. Pressure sensor 41 includes multiple pressure sensing units 411 arranged in an array. Each pressure sensing unit 411 is independent of each other, closely adjacent to each other, and spaced apart from each other. Each pressure sensing unit 411 is used to collect arterial pulsation strength information at different locations on the patient's wrist 6. A control module 5 is electrically connected to each of the multiple pressure sensing units 411. Based on the arterial pulsation strength information collected by each pressure sensing unit 411, control module 5 controls the laser pointer 3 to project a laser beam toward the location of the pressure sensing unit 411 with the highest measured pressure value (i.e., the point of strongest arterial pulsation). Specifically, in this embodiment, pressure sensor 41 is a matrix-type thin-film pressure sensor (the structure of a matrix-type thin-film pressure sensor can be found in patents such as CN106679853A). Of course, in other embodiments, pressure sensor 41 may also be a distributed pressure sensor of other types.

[0041] like Figures 1 to 4 As shown, as one embodiment, the laser pointing device 3 includes a plurality of laser pointers 31 arranged in an array. The plurality of laser pointers 31 correspond vertically to a plurality of pressure sensing units 411, and each laser pointer 31 is capable of projecting a laser beam toward the location of its corresponding pressure sensing unit 411. A control module 5 is electrically connected to each of the plurality of laser pointers 31 and is configured to control the laser pointer 31 corresponding to the pressure sensing unit 411 with the highest measured pressure value to emit laser light.

[0042] Specifically, in this embodiment, each laser pointer device 3 and each pressure sensing unit 411 can be numbered or assigned a coordinate position in advance, and then the numbers or coordinate positions of each laser pointer device 3 and each pressure sensing unit 411 are matched one to one. After collecting the arterial pulsation intensity information of the patient's wrist 6, each pressure sensing unit 411 transmits the measured arterial pulsation intensity information to the control module 5. The control module 5 analyzes and calculates the pressure sensing unit 411 with the largest measured pressure value, and obtains the number or coordinate position of the pressure sensing unit 411 with the largest measured pressure value. Then, the control module 5 controls the laser pointer 31 corresponding to the pressure sensing unit 411 with the largest measured pressure value to emit a laser (turn on), thereby forming a light spot at the strongest point of the arterial pulsation on the patient's wrist 6, so that the medical staff can insert a needle to draw blood.

[0043] like Figures 1 to 3As shown, as an embodiment, the laser pointing device 3 further includes a circuit board 32, which is fixed to the mounting portion 12. The multiple laser pointers 31 are disposed on and electrically connected to the circuit board 32. The control module 5 is electrically connected to the circuit board 32, that is, the control module 5 is electrically connected to the multiple laser pointers 31 through the circuit board 32. The circuit board 32 is used to connect to a power source (not shown) to provide power to the laser pointing device 3.

[0044] like Figures 1 to 4 As shown, as one embodiment, the mounting portion 12 is a plate-shaped structure (of course, in other embodiments, the mounting portion 12 may also have other shapes and structures), a circuit board 32 is fixed to the lower surface of the mounting portion 12, and multiple laser pointers 31 are disposed on the lower surface of the circuit board 32. When the pulsation sensing assembly 4 moves to be located above the positioning portion 2, the laser pointer device 3 and the pressure sensor 41 are aligned vertically, and each laser pointer 31 is located directly above the corresponding pressure sensing unit 411. Each laser pointer 31 is capable of projecting a laser beam directly below it, thereby enabling each laser pointer 31 to project a laser beam toward the location of its corresponding pressure sensing unit 411 (it should be noted that the laser pointer 31 does not project the laser beam directly onto the pressure sensing unit 411, but rather projects the laser beam toward the location of its corresponding pressure sensing unit 411).

[0045] like Figures 1 to 4 As shown, as an embodiment, the wrist auxiliary blood collection device has a front-to-back direction Y, a left-to-right direction X, and a height direction Z that are perpendicular to each other in pairs, a plurality of laser indicators 31 are arranged in an array along the front-to-back direction Y and the left-to-right direction X, and a plurality of pressure sensing units 411 are arranged in an array along the front-to-back direction Y and the left-to-right direction X.

[0046] like Figure 8 and Figure 9 As shown, as another embodiment, the laser pointing device 3 includes a rotational drive module 33 and a laser pointer 31 (in this case, only one laser pointer 31 may be provided). The rotational drive module 33 is connected to the mounting portion 12. The laser pointer 31 is capable of projecting laser light downward. The laser pointer 31 is connected to the rotational drive module 33, which is used to drive the laser pointer 31 to rotate. The control module 5 is electrically connected to the rotational drive module 33 and the laser pointer 31, respectively. The control module 5 is used to control the opening and closing of the laser pointer 31 and the rotational movement of the rotational drive module 33, so that the laser pointer 31 projects laser light toward the point of the strongest arterial pulsation.

[0047] Specifically, after collecting the arterial pulsation intensity information of the patient's wrist 6, each pressure sensing unit 411 transmits the measured arterial pulsation intensity information to the control module 5. The control module 5 analyzes and calculates the pressure sensing unit 411 with the largest measured pressure value, and obtains the number or coordinate position of the pressure sensing unit 411 with the largest measured pressure value. Then, the control module 5 calculates the rotation angle of the rotation drive module 33 according to the number or coordinate position of the pressure sensing unit 411 with the largest measured pressure value, so as to adjust the angle of the laser projected by the laser pointer 31 (that is, the position of the laser pointer 31 remains unchanged, but the angle of the laser projected by the laser pointer 31 changes), so that the laser emitted by the laser pointer 31 can be projected to the position of the pressure sensing unit 411 with the largest measured pressure value, thereby forming a light spot at the strongest point of the arterial pulsation on the patient's wrist 6, so that medical staff can insert a needle to draw blood.

[0048] like Figure 8 and Figure 9 As shown, as an embodiment, the rotation drive module 33 includes a first rotation drive device 331 and a second rotation drive device 332. The first rotation drive device 331 is connected to the mounting portion 12, the second rotation drive device 332 is connected to the output shaft 331a of the first rotation drive device 331, and the laser pointer 31 is connected to the output shaft 332a of the second rotation drive device 332. The control module 5 is electrically connected to the first rotation drive device 331 and the second rotation drive device 332, respectively. The first rotation drive device 331 is used to drive the second rotation drive device 332 and the laser pointer 31 to rotate about a first direction X1, and the second rotation drive device 332 is used to drive the laser pointer 31 to rotate about a second direction X2, thereby enabling the laser pointer 31 to project laser light toward the locations of the respective pressure sensing units 411. The first direction X1 is perpendicular to the second direction X2 (specifically, the first direction X1 is the left-right direction of the wrist-assisted blood collection device, and the second direction X2 is the front-back direction of the wrist-assisted blood collection device. Of course, the first direction X1 and the second direction X2 can also be other directions). The first rotation driving device 331 and the second rotation driving device 332 can both be rotation driving motors (such as stepping motors). Of course, in other embodiments, the rotation driving module 33 can also be other rotation driving mechanisms.

[0049] like Figure 10 and Figure 11As shown, as another embodiment, the laser pointing device 3 includes a horizontal motion drive module 34 and a laser pointer 31 (in this case, only one laser pointer 31 may be provided). The horizontal motion drive module 34 is connected to the mounting portion 12, and the laser pointer 31 is connected to the horizontal motion drive module 34. The horizontal motion drive module 34 is used to drive the laser pointer 31 to move horizontally. The control module 5 is electrically connected to the horizontal motion drive module 34 and the laser pointer 31, respectively. The control module 5 is used to control the opening and closing of the laser pointer 31 and the horizontal movement of the horizontal motion drive module 34, so that the laser pointer 31 projects laser light toward the point where the arterial pulsation is strongest.

[0050] Specifically, after collecting the arterial pulsation intensity information of the patient's wrist 6, each pressure sensing unit 411 transmits the measured arterial pulsation intensity information to the control module 5. The control module 5 analyzes and calculates the pressure sensing unit 411 with the largest measured pressure value, and obtains the number or coordinate position of the pressure sensing unit 411 with the largest measured pressure value. Then, the control module 5 calculates the horizontal movement distance of the horizontal movement drive module 34 according to the number or coordinate position of the pressure sensing unit 411 with the largest measured pressure value, so as to adjust the position of the laser projected by the laser pointer 31 (that is, the angle of the laser pointer 31 projecting the laser remains unchanged, but the position of the laser pointer 31 changes), so that the laser emitted by the laser pointer 31 can be projected to the position of the pressure sensing unit 411 with the largest measured pressure value, thereby forming a light spot at the strongest point of the arterial pulsation on the patient's wrist 6, so that medical staff can insert a needle to draw blood.

[0051] like Figure 10 and Figure 11 As shown, as an embodiment, the horizontal movement drive module 34 includes a first horizontal movement drive device 341 and a second horizontal movement drive device 342. The first horizontal movement drive device 341 is connected to the mounting portion 12, the second horizontal movement drive device 342 is connected to the first horizontal movement drive device 341, and the laser pointer 31 is connected to the second horizontal movement drive device 342. The control module 5 is electrically connected to the first horizontal movement drive device 341 and the second horizontal movement drive device 342. The first horizontal movement drive device 341 is used to drive the second horizontal movement drive device 342 and the laser pointer 31 to move horizontally along a third direction X3, and the second horizontal movement drive device 342 is used to drive the laser pointer 31 to move horizontally along a fourth direction X4, thereby enabling the laser pointer 31 to project laser light toward the locations of each pressure sensing unit 411. The third direction X3 is perpendicular to the fourth direction X4 (specifically, the third direction X3 is the left-right direction of the wrist auxiliary blood collection device, and the fourth direction X4 is the front-back direction of the wrist auxiliary blood collection device. Of course, the third direction X3 and the fourth direction X4 can also be other directions).

[0052] Specifically, in this embodiment, both the first horizontal motion drive device 341 and the second horizontal motion drive device 342 are linear guide modules. The first horizontal motion drive device 341 includes a first slide rail 3411 extending along a third direction X3 and a first slider 3412 disposed on the first slide rail 3411, capable of sliding on the first slide rail 3411. The second horizontal motion drive device 342 includes a second slide rail 3421 extending along a fourth direction X4 and a second slider 3422 disposed on the second slide rail 3421, capable of sliding on the second slide rail 3421. There are two first horizontal motion drive devices 341, spaced apart and arranged in parallel. The first sliders 3412 of the two first horizontal motion drive devices 341 move synchronously. The ends of the second slide rail 3421 are respectively connected to the first sliders 3412 of the two first horizontal motion drive devices 341. The laser pointer 31 is disposed on the second slider 3422 of the second horizontal motion drive device 342. By controlling the movement of the first slider 3412 and the second slider 3422, the position of the laser projected by the laser pointer 31 is controlled. Of course, in other embodiments, the first horizontal movement driving device 341 and the second horizontal movement driving device 342 can also be other horizontal driving mechanisms, such as a telescopic motor, a ball screw, a gear rack, etc.

[0053] like Figure 1 、 Figure 6 and Figure 7 As shown, as an embodiment, the pulsation sensing component 4 also includes a buckle 42 with an arched structure, and the pressure sensor 41 is arranged on the inner wall of the buckle 42, and the pressure sensor 41 is bent into an arc structure so that the pressure sensor 41 can fit the patient's wrist 6. The buckle 42 is located on one side of the positioning portion 2 and is rotatably connected to the base 11; the buckle 42 can cover the positioning portion 2 when rotating toward the positioning portion 2, and open the positioning portion 2 when rotating away from the positioning portion 2; the pressure sensor 41 can contact the patient's wrist 6 when the buckle 42 covers the positioning portion 2 (of course, in other embodiments, the buckle 42 can also be slidably connected to the base 11, or both ends of the buckle 42 can be fixed to the base 11 by snapping, etc., as long as it is ensured that the pulsation sensing component 4 can be removed after the acquisition of the arterial pulsation intensity information is completed). At the same time, a snap-fit ​​portion 14 is provided on the base 11, and the snap-fit ​​portion 14 is located on the side of the positioning portion 2 away from the fastening member 42. A snap-fit ​​structure 421 is provided on the end of the fastening member 42 close to the snap-fit ​​portion 14. The snap-fit ​​structure 421 can be snap-fitted and fixed to the snap-fit ​​portion 14, thereby preventing the fastening member 42 and the patient's wrist 6 from moving when measuring the arterial pulsation intensity information, thereby ensuring the accuracy of the measurement.

[0054] like Figure 1 、 Figure 6 and Figure 7 As shown, as one embodiment, the positioning portion 2 includes a hand rest pad 21, which is provided with a positioning groove 211 for the patient's wrist 6 to rest on (specifically, the positioning groove 211 is provided on the upper surface of the hand rest pad 21). The inner wall of the positioning groove 211 is a curved structure. The hand rest pad 21 is movably mounted on the base 11, and can move up and down relative to the base 11. An elastic member 22 is provided between the hand rest pad 21 and the base 11 for adjusting the height of the hand rest pad 21. Of course, in other embodiments, the positioning portion 2 can also have other structures.

[0055] Specifically, in this embodiment, the upper surface of the base 11 is provided with a groove 111, and a portion (bottom portion) of the hand rest pad 21 is disposed within the groove 111. The width of the hand rest pad 21 matches the width of the groove 111, and the hand rest pad 21 is movable up and down within the groove 111. The elastic member 22 is a spring, and is sandwiched between the lower surface of the hand rest pad 21 and the inner bottom wall of the groove 111. There are multiple elastic members 22, and the multiple elastic members 22 are arranged at intervals. When using the pressure sensor 41 to collect the arterial pulsation intensity information of the patient's wrist 6, when the fastener 42 covers the positioning part 2 and the pressure sensor 41 contacts the patient's wrist 6, extrusion is formed between the pressure sensor 41 and the patient's wrist 6, so that the height adaptability of the hand pillow 21 changes, thereby adapting to wrists 6 of different thicknesses. At the same time, the elastic part 22 undergoes elastic deformation, so that the pressure sensor 41 can always fit tightly between the patient's wrist 6, thereby making the wrist-assisted blood collection device well suitable for wrists 6 of different thicknesses, thereby improving its scope of application.

[0056] like Figure 6 and Figure 7 As shown, the steps for using the wrist auxiliary blood collection device can be:

[0057] 1. If Figure 6 As shown, the patient's wrist 6 is first placed in the positioning groove 211 of the hand rest pad 21 (the fastener 42 is in the open state in advance), and then the fastener 42 is rotated so that the fastener 42 is rotated above the patient's wrist 6, and the snap-fit ​​structure 421 on the fastener 42 is snapped and fixed with the snap portion 14; at this time, the pressure sensor 41 is in contact with the patient's wrist 6, thereby collecting arterial pulsation intensity information at different positions of the patient's wrist.

[0058] 2. If Figure 7As shown, after the collection of the arterial pulsation intensity information is completed, the fastener 42 is rotated in the opposite direction to open (it should be noted that the order in which the laser pointing device 3 emits the laser and the fastener 42 is rotated to open does not need to be distinguished. That is, the laser pointing device 3 can be controlled to emit the laser first, and then the fastener 42 can be rotated to open; or the fastener 42 can be rotated to open first, and then the laser pointing device 3 can be controlled to emit the laser); the control module 5 extracts the strongest point of the arterial pulsation based on the arterial pulsation intensity information collected by the pressure sensor 41, and calculates the position of the strongest point of the arterial pulsation based on this, and then controls the laser pointing device 3 to emit the laser to the strongest point of the arterial pulsation on the patient's wrist 6 according to the calculated position of the strongest point of the arterial pulsation, thereby forming a light spot on the patient's wrist 6, and the medical staff can insert the needle to draw blood according to the light spot projected on the skin of the patient's wrist 6.

[0059] The wrist-assisted blood collection device provided by the embodiment of the present invention is provided with a positioning part 2, a laser pointer device 3, a pulsation sensing component 4 and a control module 5. When the patient's wrist 6 is placed on the positioning part 2, the pressure sensor 41 in the pulsation sensing component 4 is used to collect the arterial pulsation intensity information at different positions of the patient's wrist 6. Then, the control module 5 extracts the strongest point of the arterial pulsation based on the arterial pulsation intensity information collected by the pressure sensor 41, and calculates the position of the strongest point of the arterial pulsation based on this. Then, according to the calculated position of the strongest point of the arterial pulsation, the laser pointer device 3 is controlled to project a laser to the strongest point of the arterial pulsation on the patient's wrist 6 and form a light spot. Medical staff can insert a needle to collect blood according to the light spot projected on the skin of the patient's wrist 6. The wrist-assisted blood collection device makes the needle insertion point during blood collection visual, greatly improving the accuracy, reliability and convenience of arterial blood collection and the efficiency of blood collection.

[0060] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A wrist auxiliary blood collection device, characterized in that: include: A bracket (1) comprises a base (11), a mounting portion (12) disposed above the base (11), and a support portion (13) connected between the base (11) and the mounting portion (12); the base (11) is provided with a positioning portion (2) for placing a patient's wrist, and the mounting portion (12) is provided with a laser pointer (3) for projecting laser light toward the patient's wrist; A pulsation sensing component (4), comprising a pressure sensor (41), the pressure sensor (41) being used to contact a patient's wrist to collect arterial pulsation intensity information at different positions of the patient's wrist; the pulsation sensing component (4) being arranged on the base (11) and located on one side of the positioning portion (2); the pulsation sensing component (4) being movably connected to the base (11) so that the pulsation sensing component (4) can be located above the positioning portion (2) when collecting arterial pulsation intensity information, and can move to one side of the positioning portion (2) after completing the collection of arterial pulsation intensity information; A control module (5) is electrically connected to the pressure sensor (41) and the laser pointer (3), respectively; the control module (5) is used to control the laser pointer (3) to project laser light toward the strongest point of arterial pulsation based on the arterial pulsation intensity information of the patient's wrist collected by the pressure sensor (41); The pressure sensor (41) includes a plurality of pressure sensing units (411) arranged in an array, each of the pressure sensing units (411) is used to collect arterial pulsation intensity information at different positions of the patient's wrist, and the control module (5) is electrically connected to the plurality of pressure sensing units (411). The control module (5) is used to control the laser pointing device (3) to project a laser to the position of the pressure sensing unit (411) with the maximum measured pressure value based on the arterial pulsation intensity information of the patient's wrist collected by each of the pressure sensing units (411).

2. The wrist auxiliary blood collection device according to claim 1, characterized in that: The laser pointer device (3) comprises a plurality of laser pointers (31) arranged in an array, wherein the plurality of laser pointers (31) correspond to the plurality of pressure sensing units (411) above and below, respectively, and each of the laser pointers (31) is capable of projecting a laser toward the position of the corresponding pressure sensing unit (411); the control module (5) is electrically connected to the plurality of laser pointers (31), and the control module (5) is used to control the laser pointer (31) corresponding to the pressure sensing unit (411) with the largest measured pressure value to emit a laser.

3. The wrist auxiliary blood collection device according to claim 2, characterized in that: The laser pointing device (3) further comprises a circuit board (32), the circuit board (32) being fixed on the mounting portion (12), the plurality of laser pointers (31) being arranged on the circuit board (32) and electrically connected to the circuit board (32), and the control module (5) being electrically connected to the circuit board (32).

4. The wrist auxiliary blood collection device according to claim 1, characterized in that: The laser pointer device (3) comprises a rotation drive module (33) and a laser pointer (31), wherein the rotation drive module (33) is connected to the mounting portion (12), and the laser pointer (31) is connected to the rotation drive module (33), and the rotation drive module (33) is used to drive the laser pointer (31) to rotate; the control module (5) is respectively connected to the rotation drive module (33) and the laser pointer (31) via electrical signals, and the control module (5) is used to control the rotational movement of the rotation drive module (33) so that the laser pointer (31) projects laser light toward the strongest point of arterial pulsation.

5. The wrist auxiliary blood collection device according to claim 1, characterized in that: The laser pointer device (3) comprises a horizontal movement drive module (34) and a laser pointer (31), wherein the horizontal movement drive module (34) is connected to the mounting portion (12), and the laser pointer (31) is connected to the horizontal movement drive module (34), and the horizontal movement drive module (34) is used to drive the laser pointer (31) to move horizontally; the control module (5) is electrically connected to the horizontal movement drive module (34) and the laser pointer (31), respectively, and the control module (5) is used to control the horizontal movement of the horizontal movement drive module (34) so ​​that the laser pointer (31) projects laser light toward the point where the arterial pulsation is strongest.

6. The wrist auxiliary blood collection device according to claim 1, characterized in that: The pulsation sensing component (4) further includes a buckling member (42) in an arched structure, the pressure sensor (41) is arranged on the inner wall of the buckling member (42), and the pressure sensor (41) is an arc-shaped structure, the buckling member (42) is located on one side of the positioning portion (2) and is rotatably connected to the base (11); the buckling member (42) can cover the positioning portion (2) when rotating toward the positioning portion (2) and open the positioning portion (2) when rotating away from the positioning portion (2); the pressure sensor (41) can contact the patient's wrist when the buckling member (42) covers the positioning portion (2).

7. The wrist auxiliary blood collection device according to claim 6, characterized in that: The base (11) is provided with a snap-fit ​​portion (14), the snap-fit ​​portion (14) being located on a side of the positioning portion (2) away from the fastening member (42), and the fastening member (42) is provided with a snap-fit ​​structure (421) at one end thereof close to the snap-fit ​​portion (14), and the snap-fit ​​structure (421) can be snap-fitted and fixed to the snap-fit ​​portion (14).

8. The wrist auxiliary blood collection device according to any one of claims 1 to 7, characterized in that: The positioning portion (2) comprises a hand pillow pad (21), and the hand pillow pad (21) is provided with a positioning groove (211) for the patient's wrist to rest on.

9. The wrist auxiliary blood collection device according to claim 8, characterized in that: The hand pillow (21) is movably arranged on the base (11), and the hand pillow (21) can move up and down relative to the base (11). An elastic member (22) for adjusting the height of the hand pillow (21) is provided between the hand pillow (21) and the base (11).

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