Field emergency blood sampling device convenient to operate

Abstract

The invention discloses a field emergency blood sampling device convenient to operate, and belongs to the technical field of medical instruments. The device comprises a shell and a top cover connected with the shell in a sleeved mode, a left clamping base and a right clamping base are arranged at the top of the shell, and a lead screw drives the right clamping base to move so as to fix an arm; a fixing column is installed on the front side of the left clamping seat and sleeved with a movable supporting column and a sliding arm, a fixing needle seat is arranged at the end of the sliding arm, a sliding sleeve is embedded in an inclined clamping hole in the needle seat to fix a blood taking needle, and a positioning groove is combined to assist in accurately puncturing a blood vessel. A refrigeration sheet and a temperature sensor are arranged in the storage box to preserve blood at low temperature, and a top manual negative pressure pump is connected with a blood bag through a catheter to assist blood collection; a sterilizing lamp is arranged in the top cover, a solar panel covers the top cover, and field power supply is achieved by combining a mobile power source. Through the functions of clamping and fixing, directional puncture and low-temperature preservation, the operation difficulty of non-professionals is simplified, safety and convenience in the field environment are ensured through solar power supply and ultraviolet sterilization, and the emergency blood sampling efficiency and the blood preservation quality are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to an easy-to-operate emergency blood collection device in the field. Background Technology

[0002] With the development of medical technology, the design of blood collection devices has evolved from traditional manual operation towards automation and convenience. Currently, common blood collection devices on the market mainly include disposable vacuum blood collection tube systems, handheld electric blood collectors, and portable blood collection equipment. These devices have significantly improved blood collection efficiency and safety by improving needle design, optimizing negative pressure control, and reducing the risk of infection. However, despite the progress made in existing technology, there are still shortcomings in certain special scenarios, such as blood collection in the field.

[0003] Blood collection is often necessary in the field, sometimes requiring emergency transfusions. During transfusions, blood needs to be temporarily stored. Existing devices rely on electricity, but a stable power supply is often lacking in the field. Therefore, manual blood collection is frequently used in the field. While the equipment used for manual blood collection does not require electricity, it demands highly skilled operators, potentially increasing the workload of medical staff in emergencies. Furthermore, it is inconvenient for non-professionals to use in emergency situations, significantly impacting collection efficiency. Disinfection and sterilization are also crucial during field blood collection. Existing devices lack suitable protective measures for field applications, and short-term blood storage remains a significant challenge. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes an easy-to-operate emergency blood collection device for the field, capable of meeting the needs of blood collection in the field. It assists non-professionals in blood collection by clamping the arm of the person being blood collected and controlling the directional movement of the blood collection needle, ensuring stable insertion into the blood vessel during blood collection. This not only facilitates operation but also improves blood collection efficiency. Furthermore, it is suitable for field environments, powered by a solar panel and a mobile power source, with a cooling plate to refrigerate the blood, and a germicidal lamp to disinfect and sterilize the device.

[0005] To achieve the technical objectives mentioned above, the present invention is implemented through the following technical solution: an easy-to-operate emergency blood collection device in the field, comprising a shell and a top cover fitted onto the shell. The top of the shell has protruding strips around its perimeter, and the top cover can be fitted onto the protruding strips to connect the shell and the top cover. The top of the shell has a groove running left and right, and a left clamp is fixedly installed on the left side of the groove. The inner side of the left clamp is concave and arc-shaped, and the inner surface of the left clamp is covered with silicone to conform to the skin of the arm. The bottom of the left clamp has a hole through which a lead screw is installed via a bearing. The right part of the lead screw is threaded onto a right clamp. The right clamp has a symmetrical and identical structure to the left clamp. The right clamp can be moved by controlling the movement of the lead screw, thereby clamping and fixing the arm.

[0006] A fixed post is vertically mounted on the front side of the left clamp. A square hole is vertically opened in the middle of the fixed post, and a movable support is fitted therein. A square hole in the left-right direction is opened at the top of the movable support, and a movable arm is fitted inside the hole. The movable arm is L-shaped, and a fixed needle seat is installed at its inner end. The fixed needle seat is wedge-shaped, wider at the top and narrower at the bottom, and has a through-hole in the middle. The through-hole is inclined, with a higher front end and a lower rear end. A sliding sleeve is fitted inside the through-hole, and the needle tip of a blood collection needle can be fitted inside the sliding sleeve. The height of the fixed needle seat can be adjusted by the movable support, and the left-right position of the fixed needle seat can be changed by the movable arm. The device is positioned so that the blood collection needle can be oriented and inserted into the blood vessel by sliding the sliding sleeve within the snap-fit ​​hole, thus stabilizing blood collection. A cuboid storage box is embedded in the front surface of the housing. The storage box has a magnetic door hinged to its front side. Cooling plates are evenly attached to the inner sides of the storage box. The inner surface of the cooling plates can be cooled to facilitate blood storage. A control module is installed on the top of the housing to control the start and stop of the cooling plates. Several germicidal lamps are installed inside the top cover. The germicidal lamps can sterilize and disinfect the inside of the top cover. Before use, the top cover is put on the housing and the germicidal lamps are turned on to sterilize and disinfect the blood collection device, making it suitable for field blood collection.

[0007] Furthermore, the bottom of the movable support column is connected to the bottom of the fixed column by a tension spring. When the tension spring is retracted, the fixed needle seat is at its lowest position. On the left and right sides of the fixed needle seat, silicone columns of the same height as the fixed needle seat are vertically installed, so that the silicone columns are always in contact with the arm after the arm is fixed, which facilitates the insertion of the blood collection needle.

[0008] The left clamp has a cylindrical hole in the middle of its inner side, and a fixing strap is inserted into the cylindrical hole. A plastic post is connected to the end of the fixing strap. The plastic post can be inserted into the cylindrical hole and is easy to disassemble and replace. The surface of the first end of the fixing strap is covered with a Velcro hook.

[0009] The top of the right clamp has a vertically formed clamp groove, the width of which is greater than that of the fixing strap. The outer side of the right clamp is covered with a Velcro surface, which can be attached and fixed to the fixing strap. The fixing strap protects the blood collection needle at the point where it pierces the skin.

[0010] The front and rear surfaces of the top cover are symmetrically connected with buckles and a carrying handle is installed on the top. The buckles have holes in the middle. The front and rear surfaces of the shell are symmetrically installed with protruding locking posts. The buckles can be sleeved on the locking posts so that the top cover and the shell are connected and fixed together. The entire device can be lifted by the carrying handle, making it easy to carry and use in the field.

[0011] The top and outer surfaces of the top cover are covered with solar panels, and a mobile power supply is installed inside the housing. The mobile power supply powers the cooling chip and the germicidal lamp. The solar panels can be used to replenish the power supply in the field, which is convenient for emergency use.

[0012] The inner wall of the storage box is equipped with several temperature sensors, which can monitor the temperature and transmit the signal to the control module. The cooling chip is controlled to cool the blood by setting a temperature threshold, so as to maintain the temperature inside the storage box to meet the requirements for storing blood.

[0013] A manual negative pressure pump is installed on the top of the shell. The manual negative pressure pump generates negative pressure through piston movement inside. The manual negative pressure pump can be connected to the blood bag through a conduit. The manual negative pressure pump can generate negative pressure inside the blood bag during the blood collection process, which facilitates the collection of large amounts of blood.

[0014] Furthermore, the sliding arm and the rear side of the fixed needle seat are vertically provided with positioning grooves. The axis of the positioning groove intersects with the axis of the locking hole. By observing the corresponding position of the positioning groove, the locking hole can be aligned with the position of the blood vessel, thereby improving the accuracy of the blood collection needle tip insertion.

[0015] The top of the movable support column is provided with a threaded hole and a bolt installed at the connection between it and the sliding arm. The sliding arm can be fixed by adjusting the tightness of the bolt, which helps to keep the fixed needle seat stable during blood collection, thereby ensuring the stable progress of the blood collection process.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This invention achieves rapid opening and closing and stable sealing of the device through the sleeve structure of the shell and top cover, combined with the linkage locking of the protruding strip and the snap-locking post. The germicidal lamp integrated inside the top cover can automatically disinfect the blood collection area during sleeve connection, and the storage box inside the shell maintains a constant temperature environment through closed-loop control of the cooling element and temperature sensor. The synergistic effect of these two elements solves the technical problems of equipment disinfection and blood storage in field environments.

[0018] 2. The device's clamping mechanism employs a screw drive to simultaneously move symmetrical left and right clamps. Combined with a multi-point fixing design using a silicone coating and a fixing strap, the device facilitates the fixation of the patient's arm with the assistance of a spring-loaded movable support. Simultaneously, the fixing strap is secured secondary with Velcro. This mechanical linkage structure allows non-professionals to perform vessel positioning with one hand, significantly lowering the operational threshold.

[0019] 3. The blood collection execution module achieves precise puncture through a three-stage adjustment mechanism consisting of a movable support, a sliding arm, and a sliding cannula. The overlapping axis design of the inclined locking hole and the positioning groove forms an optical alignment reference system. The operator can align the positioning groove with the blood vessel position and then slide the sliding cannula along the inclined surface of the locking hole for puncture, improving the success rate of puncture on the first attempt while reducing tissue damage. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments are briefly introduced below.

[0021] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0022] Figure 2 This is an isometric sectional view of Embodiment 1 of the present invention;

[0023] Figure 3 This is a schematic diagram of the top structure of the shell in Embodiment 1 of the present invention;

[0024] Figure 4 This is a partial structural schematic diagram of Embodiment 1 of the present invention;

[0025] Figure 5 yes Figure 4 Schematic diagram of the middle section;

[0026] Figure 6 This is a schematic diagram of the overall rear structure of Embodiment 1 of the present invention.

[0027] The structural names represented by the numbers in the attached diagram are as follows: 1-Shell, 101-Clamping post, 102-Protruding strip, 2-Top cover, 201-Snap fastener, 202-Solar panel, 203-Sterilizing lamp, 204-Handle handle, 3-Left clamp, 301-Screw rod, 302-Cylindrical hole, 4-Right clamp, 401-Clamping slot, 402-Hook and loop fastener, 5-Fixing strap, 6-Fixing post, 7-Moving support, 701-Tension spring, 702-Bolt, 8-Sliding arm, 801-Positioning groove, 9-Fixing needle seat, 901-Snap-fit ​​hole, 902-Silicone column, 10-Sliding sleeve, 11-Needle, 12-Blood bag, 13-Storage box, 1301-Magnetic door, 1302-Cooling element, 1303-Temperature sensor, 14-Manual negative pressure pump, 15-Control module. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Example 1

[0030] See Figures 1 to 6 As shown in the diagram, and based on the contents of this specification, an easy-to-operate emergency blood collection device for the field is proposed, comprising a housing 1 and a top cover 2 that fits onto the housing 1. Protruding strips 102 are installed around the top perimeter of the housing 1. The top cover 2 is connected to the locking posts 101 symmetrically installed on the front and rear surfaces of the housing 1 via buckles 201, achieving a secure fit. A left-right groove is formed on the top of the housing 1. A left clamp 3 is fixedly installed on the left side of the groove. The inner side of the left clamp 3 is concave and arc-shaped, and its surface is covered with silicone material to conform to the arm's skin and reduce pressure discomfort. A lead screw 301 is installed at the bottom of the left clamp 3 via a bearing. The right part of the lead screw 301 is threaded onto a right clamp 4. The right clamp 4 is symmetrical to the left clamp 3. By rotating the lead screw 301, the right clamp 4 can be moved left and right, thereby clamping or releasing the arm of the person being blood collected, ensuring the arm is fixed during the blood collection process.

[0031] A fixed post 6 is vertically mounted on the front side of the left clamp 3. A square hole is opened in the middle of the fixed post 6, and a movable support post 7 is fitted inside. The bottom of the movable support post 7 is connected to the fixed post 6 via a tension spring 701. When the tension spring 701 retracts, the fixed needle seat 9 is in its lowest position. A square hole is opened at the top of the movable support post 7 in a left-right direction. An L-shaped sliding arm 8 is fitted inside the hole, and a fixed needle seat 9 is installed at the inner end of the sliding arm 8. The fixed needle seat 9 is wedge-shaped, wider at the top and narrower at the bottom. A through-hole 901 is opened in the middle of the fixed needle seat 901, which is inclined with a higher front end and a lower rear end, facilitating the sliding sleeve 10 to slide within it. The sliding sleeve 10 is used to fix the needle tip 11 of the blood collection needle. By adjusting the height of the movable support post 7 and the left-right position of the sliding arm 8, the insertion angle and depth of the needle tip 11 can be accurately positioned. Silicone columns 902 are vertically installed on both sides of the fixed needle holder 9. During blood collection, the silicone columns 902 are always in contact with the arm to provide stable support, and the sliding cannula 10 can drive the needle 11 to pierce the skin after sliding.

[0032] A cylindrical hole 302 is provided in the middle of the inner side of the left clamp 3, running in a front-to-back direction. A fixing strap 5 is snapped into the cylindrical hole 302. The end of the fixing strap 5 is connected to a plastic post for easy disassembly and replacement after each use. The fixing strap 5 can be made of commonly used direct-connectors such as canvas or medical rubber. Materials that come into contact with the skin. The first end of the fixing strap 5 is covered with the hook and loop fastener. The top of the right clamp 4 has a clamp groove 401, and the outer side is covered with the hook and loop fastener 402. The fixing strap 5 can pass through the clamp groove 401 and be fixed by the hook and loop fastener to cover the puncture site of the blood collection needle and prevent contamination.

[0033] A rectangular storage box 13 is embedded in the front surface of the casing 1. Storage box 13 has a front hinged magnetic door 1301. Both the magnetic door and the magnetic door are made of polyurethane foam material. The storage box 13 has a cooling element 1302 embedded in its inner sidewall. The inner surface of the cooling element 1302 can be cooled for short-term blood storage, facilitating field use. A temperature sensor 1303 is installed on the inner wall of the storage box 13 to monitor the temperature and transmit the signal to the control module 15 on the top of the housing 1. The control module 15 starts and stops the cooling element 1302 according to a preset threshold, maintaining a constant temperature of 2-6℃ inside the box through a PID algorithm. Equipped with a high-capacity power bank, it can work continuously for more than 24 hours. A manual negative pressure pump 14 is also installed on the top of the housing 1. The negative pressure is generated by manually controlling the piston movement. After the catheter is connected to the blood bag 12, it can assist in rapid blood collection.

[0034] The rear surface of housing 1 has a consumable box with the same structure as the storage box. It does not have a cooling function and can store the infrared vascular imaging device, pressurized infusion bags, blood bags 12, sterile cotton pads, blood typing cards, pre-transfusion four-item test cards, transfusion sets, and dressings. Whole blood collection procedure stickers can be attached to both sides of the housing. A standard threaded interface can be added to the side wall of the left clamp 3 for connecting an external operating rod. An infrared vascular imaging device bracket can be installed at the top of the operating rod. A puncture angle indicator card is installed at the angle between the bracket and the horizontal plane, with a scale range of 0°-45°. The 20°-30° range is marked as a green safety zone, <20° is marked with a yellow "angle too small" warning, and >30° is marked with a red "angle too large" warning.

[0035] The top cover 2 is equipped with several germicidal lamps 203. When connected to the housing 1, the germicidal lamps 203 can be turned on to disinfect the top of the housing 1 and the blood collection components with ultraviolet light. The top and outer surfaces of the top cover 2 are covered with solar panels 202. A mobile power bank is installed inside the housing 1. The solar panels 202 can charge the mobile power bank to prevent it from running out of power in the field, and thus power the cooling chip 1302 and the germicidal lamps 203, ensuring continuous use in environments without power. The top cover 2 is equipped with a carrying handle 204 for easy carrying.

[0036] A positioning groove 801 is vertically formed on the rear side of the sliding arm 8 and the fixed needle seat 9. The axis of the positioning groove 801 intersects with the axis of the locking hole 901. During operation, the positioning groove 801 can be observed to align with the position of the blood vessel, improving the accuracy of insertion. A threaded hole is formed at the top of the movable support 7 where it connects with the sliding arm 8, and a bolt 702 is installed. Tightening the bolt 702 can fix the position of the sliding arm 8 and keep the blood collection process stable.

[0037] Before using this device to collect blood, attach the top cover 2 to the housing 1 and turn on the germicidal lamp 203 for disinfection. After disinfection, remove the top cover 2, place the patient's arm between the left clamp 3 and the right clamp 4, rotate the screw 301 to move the right clamp 4 to clamp the arm, adjust the height of the movable support 7 and the position of the sliding arm 8, aligning the locking hole 901 of the fixed needle seat 9 with the blood vessel, and use the positioning groove 801 for calibration. Insert the blood collection needle 11 into the sliding sleeve 10, and slowly insert it into the blood vessel at an angle along the locking hole 901. Then, cover the puncture site with the fixing strap 5 and fix it to the Velcro surface 402 of the right clamp 4. During blood collection, the blood collection needle cannula is connected to the blood bag 12 to draw blood. Depending on the blood flow, select whether to use the manual negative pressure pump 14. If the blood flow is slow, the manual negative pressure pump can be connected to the blood bag 12 to control the manual negative pressure pump 14 to generate negative pressure and accelerate blood collection. After blood collection, the blood is stored in the storage box 13, and the cooling plate 1302 is activated to maintain a low temperature.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. For those skilled in the art, various modifications and variations can be made to the above embodiments without departing from the principles of the present invention, and all such modifications and variations should fall within the scope of protection of the present invention.

Claims

1. An easy-to-operate emergency blood collection device for the field, characterized in that: The device includes a housing (1) and a top cover (2) that fits onto the housing (1). The housing (1) has protruding strips (102) installed around its top perimeter. The top cover (2) can be fitted onto the protruding strips (102). The top of the housing (1) has a groove in the left-right direction, and a left clamp (3) is fixedly installed on the left side of the groove. The inner side of the left clamp (3) is concave and arc-shaped, and the inner surface of the left clamp is covered with silicone to fit the skin of the arm. The bottom of the left clamp (3) has a hole and a lead screw (301) is installed through a bearing. The right part of the lead screw (301) is threaded with a right clamp (4). The right clamp (4) and the left clamp (3) have the same symmetrical structure. The right clamp (4) can be moved by the lead screw (301). A fixed column (6) is vertically installed on the front side of the left clamp (3). A square hole is vertically opened in the middle of the fixed column (6) and a movable support column (7) is sleeved thereon. A square hole in the left and right direction is opened at the top of the movable support column (7) and a movable arm is sleeved in the hole. The sliding arm (8) is L-shaped and is installed at the inner end. There is a fixed needle holder (9), which is wedge-shaped with a wider top and a narrower bottom and has a through-hole (901) in the middle. The through-hole (901) is inclined with a higher front end and a lower rear end. A sliding sleeve (10) is fitted inside the through-hole (901), and the needle tip (11) of the blood collection needle can be fitted inside the sliding sleeve (10). A rectangular storage box (13) is embedded in the front surface of the housing (1). A magnetic door (1301) is hinged to the front side of the storage box (13). 3) Cooling chips (1302) are embedded and installed on the inner side. The inner surface of the cooling chip (1302) can be cooled. A control module (15) is installed on the top of the housing (1) to control the start and stop of the cooling chip (1302). Several germicidal lamps (203) are installed inside the top cover (2). The germicidal lamps (203) can sterilize and disinfect the inside of the top cover (2). When the top cover (2) is fitted onto the housing (1), the germicidal lamps (203) can be turned on to sterilize and disinfect the top part of the housing (1).

2. The easy-to-operate emergency blood collection device for the field according to claim 1, characterized in that: The bottom of the movable support column (7) is connected to the bottom of the fixed column (6) by a tension spring (701). When the tension spring (701) is retracted, the fixed needle seat (9) is at its lowest position, and silicone columns (902) of the same height as the fixed needle seat (9) are vertically installed on the left and right sides of the fixed needle seat (9).

3. The easy-to-operate emergency blood collection device for the field according to claim 1, characterized in that: The left clamp (3) has a cylindrical hole (302) in the middle of its inner side facing forward and backward. A fixing strap (5) is snapped into the cylindrical hole (302). A plastic post is connected to the end of the fixing strap (5). The plastic post can be snapped into the cylindrical hole (302). The surface of the first end of the fixing strap (5) is covered with a Velcro hook.

4. The easy-to-operate emergency blood collection device for the field according to claim 3, characterized in that: The top of the right clamp (4) is vertically provided with a clamp groove (401), the width of which is greater than that of the fixing strap (5), and the outside of the right clamp (4) is covered with a Velcro surface (402) which can be glued and fixed to the fixing strap (5).

5. The easy-to-operate emergency blood collection device for the field according to claim 1, characterized in that: The front and rear surfaces of the top cover (2) are symmetrically connected with buckles (201) and a handle (204) is installed on the top. The buckles (201) have holes in the middle. The front and rear surfaces of the housing (1) are symmetrically installed with protruding pins (101). The buckles (201) can be sleeved on the buckles so that the top cover (2) and the housing (1) are connected and fixed.

6. The easy-to-operate emergency blood collection device for the field according to claim 1, characterized in that: The top and outer surfaces of the top cover (2) are covered with solar panels (202), and a mobile power supply is installed inside the housing (1). The mobile power supply powers the cooling chip (1302) and the germicidal lamp (203). The solar panels (202) can be used to replenish the power supply in the field.

7. The easy-to-operate emergency blood collection device for the field according to claim 1, characterized in that: The inner wall of the storage box (13) is equipped with several temperature sensors (1303), which can monitor the temperature and transmit the signal to the control module (15) to control the cooling chip (1302) to cool by setting the temperature threshold.

8. The easy-to-operate emergency blood collection device for the field according to claim 1, characterized in that: A manual negative pressure pump (14) is installed on the top of the housing (1). The manual negative pressure pump (14) generates negative pressure through piston movement inside. The manual negative pressure pump (14) can be connected to the blood bag (12) through a conduit to generate negative pressure inside the blood bag (12).

9. The easy-to-operate emergency blood collection device for the field according to claim 1, characterized in that: The sliding arm (8) and the fixed needle seat (9) are vertically provided with a positioning groove (801) on the rear side. The axis of the positioning groove (801) intersects with the axis of the locking hole (901). By observing the corresponding position of the positioning groove (801), the locking hole (901) can be aligned with the position of the blood vessel.

10. The easy-to-operate emergency blood collection device for the field according to claim 1, characterized in that: The top of the movable support (7) is provided with a threaded hole and a bolt (702) is installed at the connection between it and the sliding arm (8). The sliding arm (8) can be fixed by adjusting the tightness of the bolt (702).

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