A fixing device for a blood sampling device

Abstract

The application discloses a fixing device of a blood sampling equipment and relates to the technical field of medical instruments.The fixing device of the blood sampling equipment is precisely and stably fixed through cooperation of multiple components, the problems of deflection and rotation of a blood sampling needle caused by the operation method of an operator, contraction of a patient's limbs, shaking of the equipment and the like are avoided, blood flow caused by the fact that a cutting surface of the blood sampling needle is attached to a blood vessel wall is prevented, and the cutting surface is prevented from being blocked, blood sampling efficiency is effectively improved, and the blood sampling failure rate and the pain of the patient caused by secondary puncture are reduced; the ball head rod of the adjusting support table can realize multi-degree-of-freedom motion such as pitching, deflecting and rotating, the angle locking structure of the threaded table and the adjusting hoop can precisely adjust the spatial posture of the blood sampling equipment, and different blood sampling puncture angles and operation scenes can be adapted; and the blood vessel fixing component can adapt to blood sampling vessels with different diameters by adjusting the tightening degree of the elastic bandage, and the use requirements of diversified blood sampling equipment can be met.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a fixing device for a blood collection device. Background Technology

[0002] In clinical blood collection procedures, medical tape or other similar adhesives are usually used to directly attach and fix the blood collection needle. The fixation effect depends on the operator's technique and the placement of the adhesive, and the stability is relatively poor.

[0003] During blood collection, factors such as involuntary muscle contraction of the patient's limbs and shaking of the blood collection scale can easily generate traction forces, causing the blood collection needle to deflect or rotate inside the blood vessel. This can cause the cut surface of the blood collection needle to adhere to or even tightly adhere to the blood vessel wall, resulting in obstruction of the blood collection channel and poor blood flow. In severe cases, it can even cause blood to coagulate and block the needle, which not only affects the efficiency of blood collection but also easily leads to blood collection failure, increasing the pain and discomfort of the patient during a second puncture.

[0004] Therefore, there is an urgent need to design a special blood collection equipment fixing device to replace the traditional adhesive tape method, so as to stabilize and accurately position the blood collection needle, keep it at a suitable and fixed puncture angle, ensure smooth blood flow during blood collection, and reduce the probability of needle blockage and secondary puncture. Summary of the Invention

[0005] The purpose of this invention is to provide a fixing device for a blood collection device to solve the existing problems: the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fixing device for a blood collection device, comprising a fixing component, an adjusting support platform, and a blood vessel fixing component; the top end of the fixing component is fixedly connected to the adjusting support platform, and the top end of the adjusting support platform is fixedly connected to the blood vessel fixing component;

[0007] The fixing components are used for the positioning and fixing of the entire device;

[0008] The adjustable support platform is used for posture adjustment and angle locking. It serves as the connection hub between the fixed components and the blood vessel fixed components, enabling multi-dimensional precise adjustment of the blood collection equipment support part and maintaining stability.

[0009] The vascular fixation component provides flexible and stable constraint and adaptation for the blood collection tube, ensuring stable equipment posture and smooth blood flow during blood collection, and avoiding damage caused by rigid contact.

[0010] Furthermore, the fixing component includes a base and a fixing plate, the fixing plate is provided at the bottom end of the base, and the fixing plate includes an inner core structure and an outer material, the inner core structure being encapsulated within the outer material;

[0011] The adjusting support platform includes a connecting platform, a threaded platform, an adjusting hoop, and a ball head rod. The bottom end of the connecting platform is fixedly connected to the base, and the top end of the base is fixedly connected to the threaded platform. The external thread of the threaded platform engages with the internal thread of the adjusting hoop. The ball head of the ball head rod is clamped at the slotted position at the top of the threaded platform. When the adjusting hoop is tightened, it squeezes the slotted part of the threaded platform to shrink and hold the ball head tightly. When it is loosened, it releases the ball head.

[0012] The vascular fixation assembly includes a lower stent, an upper stent, rollers, an extension platform, a pressure positioning block, a magnetic block, an elastic bandage, and a guide groove. The bottom of the lower stent is rigidly connected to a ball-head rod. The upper stent is fixedly connected to the top of both sides of the lower stent. Rollers are rotatably connected to the inner side of the upper stent. An extension platform is fixedly connected to both ends of one side of the upper stent. A guide groove is opened inside the upper stent on this side. A pressure positioning block is rotatably connected to the inner side of the extension platform. A magnetic block is fixedly connected to the bottom end of the pressure positioning block. An elastic bandage is arranged between the upper stents. One end of the elastic bandage is fixed to the upper stent, and the other end extends to the outside through the guide groove. A magnetic block that cooperates with the magnetic block is provided at the pressure position of the pressure positioning block.

[0013] Furthermore, the outer layer material of the fixing sheet includes at least silicone, and the inner core structure is a high-toughness steel sheet.

[0014] Furthermore, the height of the adjusting support platform is no higher than 2cm, and the height of the blood vessel fixing component is no higher than 3cm; the threaded platform is a high-toughness plastic product with a reserved space on its inner side and a cross groove on its top; the outer wall of the adjusting hoop is provided with knurled texture, and its inner wall is a conical structure, which compresses the grooved part of the threaded platform when tightened.

[0015] Furthermore, the lower part of the ball joint is enclosed by the slotted structure of the threaded platform, which enables multi-directional movement of pitch, yaw, and rotation to drive the vascular fixation component to adjust its spatial posture.

[0016] Furthermore, the lower support is made of a high-toughness metal material, which has the ability to gradually recover after being opened, and can realize opening and closing movements; the roller is used to guide the blood collection tube into the space between the lower support and the upper support to avoid hard contact damage to the blood collection tube.

[0017] Furthermore, the elastic bandage is made of rubber or silicone. The tension of the elastic bandage can be adjusted by stretching or pulling back the elastic bandage that extends through the guide groove, thereby adjusting the distance between the elastic bandage and the rollers on both sides to accommodate blood collection tubes of different diameters.

[0018] Furthermore, the adjusting support platform includes a connecting platform, a threaded platform, an adjusting clamp, and a ball-end rod;

[0019] The connecting platform includes a first mounting block, a second mounting block, a stroke groove, a first spring, a locking ball, a connecting sleeve, a push post, a second spring, a push plate, and a mating groove;

[0020] The bottom end of the first mounting block is fixedly connected to the fixing component, and the top end of the second mounting block is fixedly connected to the threaded platform; the first mounting block has stroke grooves on both sides, a first spring is fixed in the stroke grooves, and a locking ball is fixed on one side of the first spring;

[0021] The second mounting block has connecting sleeves fixed on both sides. A push post is slidably connected to the inner side of the connecting sleeve. A mating groove is opened on the side of the push post near the locking ball. A second spring is fixed on the side of the connecting sleeve away from the locking ball. A push plate is fixed on the other side of the push post. The push plate is fixedly connected to the second spring.

[0022] The first mounting block and the second mounting block are inserted into each other, and the mounting connection is completed by locking the ball into the mating groove. Pressing the push plate can drive the push post to push out the lock ball to achieve unlocking and separation.

[0023] The locking ball and the mating groove are in a clearance fit.

[0024] Furthermore, the fixing assembly includes an upper clamp, a lower clamp, a locking screw, and a fitting sleeve.

[0025] One end of the upper clamp is rotatably connected to one end of the lower clamp, and the other end of the upper clamp is rotatably connected to a locking screw. The outer side of the locking screw is threadedly connected to the fitting sleeve.

[0026] Both the upper and lower clamps have reserved slots on their inner sides. The locking screw is clearance-fitted with the reserved slots, and the width of the fitting sleeve is greater than the reserved slots.

[0027] Rotating the fitting sleeve can squeeze the free ends of the upper and lower clamps together, reducing the clamp ring diameter and achieving locking. Rotating the fitting sleeve in the opposite direction can unlock and separate the clamps.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. This invention achieves precise and stable positioning of the blood collection device through the cooperation of multiple components, avoiding the problems of needle deflection and rotation caused by traditional tape fixation due to operator technique, patient limb contraction, equipment shaking, etc., and preventing blood flow obstruction and needle blockage caused by the cut surface of the blood collection needle adhering to the blood vessel wall. It effectively improves blood collection efficiency and reduces the failure rate of blood collection and the pain of patients requiring secondary puncture.

[0030] 2. The ball joint of the adjustable support platform of the present invention can realize multi-degree-of-freedom movement such as pitch, deflection and rotation. Combined with the threaded platform and the angle locking structure of the adjusting hoop, it can accurately adjust the spatial posture of the blood collection equipment to adapt to different blood collection puncture angles and operating scenarios. The blood vessel fixation component can be adapted to blood collection tubes of different diameters by adjusting the tightness of the elastic bandage to meet the usage needs of diverse blood collection equipment.

[0031] 3. The fixation component of the present invention provides two interchangeable fixation methods: limb clamping and tube locking. The basic version can be quickly and securely fixed to the patient's wrist or other blood collection sites, adapting to routine clinical blood collection operations; the replacement version can be locked onto tubes such as bed frames, which is not only suitable for blood collection scenarios, but can also provide non-destructive support for other delivery / collection tubes, improving the versatility and practicality of the device.

[0032] 4. The vascular fixation component of the present invention adopts a flexible constraint method that combines elastic bandage (rubber / silicone material) with rollers. It not only achieves anti-slip of the blood collection device through three-way support and limitation, but also avoids damage to the blood collection tube by rigid clamping, and does not cause additional pressure on the blood vessel, thus ensuring the integrity of the blood vessel and the device during the blood collection process. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is an overall schematic diagram of Embodiment 1 of the present invention;

[0035] Figure 2 This is a schematic diagram illustrating the application of Embodiment 1 of the present invention;

[0036] Figure 3 This is an exploded view of Embodiment 1 of the present invention;

[0037] Figure 4 This is an exploded view of Embodiment 2 of the present invention;

[0038] Figure 5 This is a partial structural cross-sectional view of Embodiment 2 of the present invention;

[0039] Figure 6 This is an overall schematic diagram of Embodiment 3 of the present invention;

[0040] Figure 7 This is a schematic diagram illustrating the application of Embodiment 3 of the present invention.

[0041] In the diagram: 1. Fixation component; 2. Adjustable support platform; 3. Vascular fixation component;

[0042] 11. Base; 12. Fixing plate;

[0043] 21. Connecting platform; 22. Threaded platform; 23. Adjusting clamp; 24. Ball head rod;

[0044] 31. Lower support; 32. Upper support; 33. Roller; 34. Extension table; 35. Pressing positioning block; 36. Magnetic block; 37. Elastic bandage; 38. Guide groove;

[0045] 211. First mounting block; 212. Second mounting block; 213. Stroke groove; 214. First spring; 215. Locking ball; 216. Connecting sleeve; 217. Push post; 218. Second spring; 219. Push plate; 220. Mating groove;

[0046] 111. Upper clamp; 112. Lower clamp; 113. Locking screw; 114. Fitting sleeve. Detailed Implementation

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0048] Example 1:

[0049] Please see Figures 1-3 A fixing device for a blood collection device includes a fixing component 1, an adjusting support platform 2, and a blood vessel fixing component 3. The top end of the fixing component 1 is fixedly connected to the adjusting support platform 2, and the top end of the adjusting support platform 2 is fixedly connected to the blood vessel fixing component 3.

[0050] The fixation component 1, adjustment support platform 2, and vascular fixation component 3 are mostly made of plastic, thin metal, rubber, and silicone. Although they are slightly heavier than adhesive fixation, they allow for more flexible posture adjustment and more reliable vascular restraint, effectively compensating for the shortcomings of adhesive fixation in terms of stability and adjustability. The overall weight is still kept within an acceptable range for clinical operation, balancing ease of operation and fixation reliability. It should be noted that this device can be laid flat or its angle readjusted during use, with the height of the adjustment support platform 2 not exceeding 2cm and the height of the vascular fixation component 3 not exceeding 3cm. Combined with different puncture angles and intravascular pressure, blood collection is completed, and more. Figures 1-3 As shown, it is placed upright, and its use is not limited to the patient.

[0051] In this embodiment, the fixing component 1 includes a base 11 and a fixing piece 12. The fixing piece 12 is provided at the bottom end of the base 11. The fixing piece 12 includes an inner core structure and an outer material. The outer material is provided on the outside of the inner core structure.

[0052] In this embodiment, the outer layer material includes at least silicone, and the inner core structure is a high-toughness steel sheet, which includes at least manganese steel or stainless steel. After being stretched by external force, it can quickly spring back into a ring shape. The high-toughness steel sheet is completely encapsulated within the outer layer material and is not exposed, ensuring safe use. Different materials can be used for the inner core structure and outer layer material in different embodiments.

[0053] During use, by holding one side of the fixing plate 12, the entire device is struck against the patient's wrist to achieve automatic circumferential clamping of the target object. The fixing plate 12 can be straightened into a strip under external force. In this embodiment, the adjusting support platform 2 includes a connecting platform 21, a threaded platform 22, an adjusting hoop 23, and a ball-head rod 24. The bottom end of the connecting platform 21 is fixedly connected to the base 11, and the top end of the base 11 is fixedly connected to the threaded platform 22.

[0054] The threaded platform 22 is a high-toughness plastic product. The inner side of the threaded platform 22 has a reserved space, and the top of the threaded platform 22 has a cross groove.

[0055] The external thread of the threaded platform 22 engages with the internal thread of the adjusting hoop 23. By rotating the adjusting hoop 23, the axial lifting and lowering movement can be achieved. The slotted position of the threaded platform 22 is used to clamp the ball head of the ball joint 24: when the adjusting hoop 23 is tightened upward, the slot is squeezed and contracted, thereby holding the ball head and achieving angle locking; when it is loosened, the ball head is released, allowing for fine-tuning of the angle.

[0056] The adjusting hoop 23 is a manually operated locking actuator that provides power for locking the angle of the ball head rod 24. The outer wall of the adjusting hoop 23 is provided with knurled texture, which makes it easy to rotate by hand. Through the threaded engagement with the threaded platform 22, the rotational motion is converted into axial thrust. When tightened upwards, the conical surface of its inner wall will compress the slotted part of the threaded platform 22 to contract, thereby clamping the ball head of the ball head rod 24 and achieving angle locking. When loosened downwards, the pressure of the conical surface is released, the ball head resumes its movement, and the angle can be adjusted.

[0057] The ball joint 24 is the core of the multi-degree-of-freedom angle adjustment, connecting the adjustment support platform 2 and the vascular fixation component 3, so as to realize the spatial posture adjustment of the vascular fixation component 3.

[0058] The lower part of the ball joint 24 is enclosed by the slotted structure of the threaded platform 22, which can realize multi-directional movement such as pitch, deflection, and rotation, and is used to adjust the vascular fixation component 3 to the optimal operating position.

[0059] In this embodiment, the vascular fixation component 3 includes a lower support 31, an upper support 32, a roller 33, an extension platform 34, a pressure positioning block 35, a magnetic block 36, an elastic bandage 37, and a guide groove 38.

[0060] The bottom of the lower bracket 31 is rigidly connected to the ball joint 24, which supports the attitude and position locking from the adjustment support platform 2.

[0061] In this embodiment, the upper support 32 is fixedly connected to the top of both sides of the lower support 31. The lower support 31 is made of a metal with high toughness and has the ability to gradually recover after being opened, so as to realize the opening and closing movement and provide operating space for the insertion and removal of blood collection tubes, thereby adapting to different widths of blood collection tubes in conjunction with the roller 33.

[0062] In this embodiment, a roller 33 is rotatably connected to the inner side of the upper support 32. The roller 33 is used to guide the blood collection tube into the space between the lower support 31 and the upper support 32, so as to avoid hard contact damage to the blood collection tube and ensure that the blood collection tube can still be stably constrained under multi-posture adjustment.

[0063] In this embodiment, both ends of the upper support 32 on one side are fixedly connected to the extension platform 34, and the upper support 32 on this side is provided with an outlet groove 38. The inner side of the extension platform 34 is rotatably connected to the pressing positioning block 35. The bottom end of the pressing positioning block 35 is fixedly connected to the magnetic block 36. The pressing position of the pressing positioning block 35 is provided with another magnetic block corresponding to the magnetic block 36, which is used to form magnetic fixation and further press the positioning elastic bandage 37.

[0064] An elastic bandage 37 is provided between the upper stents 32. One end of the elastic bandage 37 is fixedly connected to the upper stent 32, and the other end of the elastic bandage 37 extends to the outside through the guide groove 38. By rotating and pressing down the positioning block 35, the extended elastic bandage 37 is pressed and fixed, so that one end of the elastic bandage 37 is subjected to force and forms a certain tension, which is used to support the blood collection tube between the lower stent 31 and the upper stent 32.

[0065] The tension of the elastic bandage 37 can be adjusted by stretching or pulling back the elastic bandage 37 through the outlet groove 38, thereby adjusting the distance between the elastic bandage 37 and the rollers 33 on both sides, thus completing the three-way support limitation for blood collection tubes of different diameters.

[0066] The elastic bandage 37 can be made of rubber or silicone. Since the elastic bandage 37 is located below the blood collection tube, it can support the blood collection tube. Through the friction of the material, combined with the limiting action of the rollers 33 on both sides, it further supports and prevents slippage of the blood collection tube.

[0067] The elastic bandage 37 and the roller 33 work together to provide a gentle restraint with flexible materials, which ensures the stability of the blood vessel posture and avoids damage or blockage of the blood collection tube by rigid clamping.

[0068] Example 2:

[0069] See Figure 4 and Figure 5 This embodiment further proposes improvements to the connecting platform 21 based on the above embodiments. The rest of the structure is the same as in Embodiment 1. The modification of the connecting platform 21 in this embodiment is used to replace different types of fixing components 1.

[0070] The connecting platform 21 includes a first mounting block 211, a second mounting block 212, a stroke groove 213, a first spring 214, a locking ball 215, a connecting sleeve 216, a push post 217, a second spring 218, a push plate 219, and a mating groove 220.

[0071] The bottom end of the first mounting block 211 is fixedly connected to the fixing component 1, and the top end of the second mounting block 212 is fixedly connected to the threaded platform 22.

[0072] The first mounting block 211 has travel grooves 213 on both sides, and a first spring 214 is fixedly connected inside the travel groove 213. A locking ball 215 is fixedly connected to one side of the first spring 214.

[0073] The second mounting block 212 is fixedly connected to both sides of the connecting sleeve 216. The inner side of the connecting sleeve 216 is a cylindrical hollow groove. The inner side of the cylindrical hollow groove is slidably connected to the push post 217. The push post 217 is provided with a mating groove 220 on the side near the locking ball 215. The mating groove 220 and the locking ball 215 are in clearance fit. The side of the connecting sleeve 216 away from the locking ball 215 is fixedly connected to the second spring 218. The other side of the push post 217 is fixedly connected to the push piece 219. The push piece 219 and the second spring 218 are fixedly connected.

[0074] The top of the first mounting block 211 is inserted into the bottom of the second mounting block 212. The first mounting block 211 and the second mounting block 212 are connected by a locking bead 215 inserted into the mating groove 220 of the push post 217.

[0075] Fitting and connection process locking steps:

[0076] Alignment and insertion: Align the bottom end of the second mounting block 212 with the top end of the first mounting block 211 and insert it downwards along the axial direction.

[0077] Locking ball avoidance: During insertion, the side wall of the second mounting block 212 will squeeze the locking ball 215, causing the locking ball 215 to compress the first spring 214 and retract into the travel groove 213.

[0078] Position locking: When the insertion into the travel groove 213 is aligned with the mating groove 220 of the push post 217, the first spring 214 releases its elastic force, pushing the locking ball 215 into the mating groove 220 to achieve locking and positioning, thus completing the assembly and connection of the two pieces.

[0079] Disassembly steps for unlocking and separating:

[0080] Press to trigger: Press the push plate 219 on both sides with your hand. The push plate 219 compresses the second spring 218 and drives the push post 217 to slide towards the lock ball 215.

[0081] Ejecting the locking ball: When the push post 217 moves, the inclined surface of the mating groove 220 will push the locking ball 215 out of the groove, causing the locking ball 215 to recompress the first spring 214 and retract into the stroke groove 213.

[0082] Separation component: After the locking ball 215 disengages from the mating groove 220, the locking constraint between the first mounting block 211 and the second mounting block 212 is released, and the two can be directly separated along the axial direction.

[0083] Reset and standby: After releasing the push plate 219, the second spring 218 pushes the push plate 219 and the push post 217 to reset, waiting for the next assembly.

[0084] Example 3:

[0085] See Figure 6 and Figure 7 This embodiment further proposes a different fixing component 1 based on the above embodiment 1;

[0086] The fixing component 1 includes an upper clamp 111, a lower clamp 112, a locking screw 113, and a fitting sleeve 114;

[0087] One end of the upper clamp 111 is rotatably connected to one end of the lower clamp 112, and the other end of the upper clamp 111 is rotatably connected to a locking screw 113. The outer side of the locking screw 113 is connected to a fitting sleeve 114 by a thread.

[0088] Both the upper clamp 111 and the lower clamp 112 have reserved slots on their inner sides. The locking screw 113 is clearance-fitted with the reserved slots, and the width of the fitting sleeve 114 is greater than the reserved slots.

[0089] The upper clamp 111 and the lower clamp 112 are rotatably connected at one end via a pivot, forming an openable ring structure. During installation, the upper and lower clamps are first opened by rotating around the hinge point, and the pipe fitting to be fixed is inserted into the cavity formed by the two clamps to complete the initial positioning.

[0090] After closing the free ends of the upper clamp 111 and the lower clamp 112, rotate the locking screw 113 connected to the upper clamp end to make its latch engage with the locking end of the lower clamp 112. When rotating the fitting sleeve 114, the free ends of the upper clamp 111 and the lower clamp 112 are pressed together, and the clamp ring diameter continues to decrease.

[0091] Threaded drives have a self-locking characteristic, which can maintain a continuous locking force without reverse rotation, preventing components from loosening due to vibration or external force.

[0092] When disassembly is required, rotate the fitting sleeve 114 in the opposite direction to unlock and separate the upper clamp 111 and the lower clamp 112.

[0093] The fixing component 1 in this embodiment can be applied to some bed frames and other locations, so that this device can not only be used for blood collection, but also for other tubes that need to be transported or collected, to complete the tube support without damage.

[0094] In summary:

[0095] The fixation device of this blood collection equipment uses a three-level collaborative working logic of fixing component positioning, adjustable support platform posture locking, and flexible clamping of blood vessel fixation components to replace the traditional adhesive tape method, achieving stable and precise fixation of the blood collection equipment. The coordinated operation of each component ensures the stability of the blood collection process. The specific module descriptions are as follows:

[0096] Fixing components: enable rapid positioning and stable fixation of the entire device.

[0097] This component offers two fixing methods suitable for different scenarios. The core is to achieve a rigid connection between the device and the fixing surface through a mechanical structure, laying the foundation for subsequent operations:

[0098] Basic clamping type: The fixing plate is made of high-toughness steel sheet encapsulated in silicone. It can be straightened under external force and spring back into a ring shape after the force is released. Simply tap it to make the fixing plate hug and clamp the patient's wrist or other blood collection limbs, quickly completing the positioning of the device in the human body.

[0099] Clamp locking type: The upper and lower clamps can be inserted into bed frames and other pipe fittings by opening and closing. Rotating the fitting sleeve drives the locking screw to squeeze the free end of the clamp, reducing the clamp ring diameter and achieving non-destructive locking. At the same time, the self-locking characteristic of the thread drive prevents loosening. It is suitable for fixing non-human support objects. Both fixing components can be quickly replaced through the quick-release structure of the connecting table.

[0100] Adjustable support platform: Enables multi-dimensional posture adjustment and angle locking of the vascular fixation components.

[0101] As the connecting hub between the fixation components and the vascular fixation components, the core achieves precise adjustment and stable maintenance of the blood collection equipment's posture through multi-directional movement of the ball head and threaded compression locking.

[0102] The lower part of the ball head is encased in a grooved threaded platform, allowing for multiple degrees of freedom of movement such as pitch, yaw, and rotation. This enables the vascular fixation component at the top to adjust its spatial posture synchronously, adapting to different blood collection puncture angles and operational needs.

[0103] The knurled adjusting hoop can be manually rotated to convert rotational motion into axial thrust through its thread engagement with the threaded platform. The conical surface of the inner wall of the adjusting hoop compresses the grooved and contracted threaded platform, gripping the ball head of the ball joint to lock the angle. Rotating the adjusting hoop in the opposite direction releases the pressure on the conical surface, allowing the ball head to resume movement for further fine-tuning. The height of the adjustable support platform is ≤2cm, making it suitable for clinical operating spaces.

[0104] Vascular fixation components: enable flexible and stable positioning and multi-size adaptation of blood collection equipment.

[0105] As the direct fixing component of the blood collection equipment, the core achieves flexible clamping through roller guidance and three-way support with elastic bandages. This ensures the stability of the blood collection equipment while avoiding damage caused by rigid contact. Specifically:

[0106] The high-toughness metal lower stent can be opened and closed, and with the rollers on the inside of the stent, the blood collection tube is guided to be smoothly placed into the stent gap, avoiding hard contact that could scratch or damage the blood collection tube, and achieving initial positioning.

[0107] The elastic bandage (rubber or silicone material) between the stents is fixed at one end and extends through the guide groove at the other end. The tightness can be adjusted by stretching / pulling back the bandage. It works with the rollers on both sides to form a three-way support constraint, which can be used to fit blood collection tubes of different diameters.

[0108] Rotate the downward positioning block at the extension stage, and use the magnetic attraction force between the magnetic block and the corresponding magnetic block to press the extended elastic bandage, so as to quickly fix the tightness of the bandage. The flexible friction of the bandage prevents the blood collection tube from sliding, while avoiding rigid clamping that blocks the blood collection channel and compresses the blood vessel. The height of the blood vessel fixing component is ≤3cm, which, together with the pressure inside the blood vessel, ensures smooth blood collection.

[0109] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fixing device for a blood collection device, characterized in that: It includes a fixation component (1), an adjustment support platform (2), and a vascular fixation component (3); the top of the fixation component (1) is fixedly connected to the adjustment support platform (2), and the top of the adjustment support platform (2) is fixedly connected to the vascular fixation component (3). The fixing component (1) is used for the positioning and fixing of the entire device; The adjustment support platform (2) is for posture adjustment and angle locking, and serves as the connection hub between the fixed component (1) and the blood vessel fixed component (3), enabling multi-dimensional precise adjustment of the support part of the blood collection equipment and maintaining stability; The vascular fixation component (3) provides flexible and stable constraint and adaptation for the blood collection tube, ensuring stable equipment posture and smooth blood flow during the blood collection process, and avoiding damage caused by rigid contact.

2. The fixing device for a blood collection device according to claim 1, characterized in that: The fixing component (1) includes a base (11) and a fixing piece (12). The fixing piece (12) is provided at the bottom end of the base (11). The fixing piece (12) includes an inner core structure and an outer material. The inner core structure is encapsulated in the outer material. The adjusting support platform (2) includes a connecting platform (21), a threaded platform (22), an adjusting hoop (23), and a ball head rod (24). The bottom end of the connecting platform (21) is fixedly connected to the base (11), and the top end of the base (11) is fixedly connected to the threaded platform (22). The threaded platform (22) is threadedly engaged with the adjusting hoop (23) on the outside. The slotted position at the top end of the threaded platform (22) clamps the ball head of the ball head rod (24). When the adjusting hoop (23) is tightened, it squeezes the slotted part of the threaded platform (22) to shrink and hold the ball head. When it is loosened, it releases the ball head. The vascular fixation assembly (3) includes a lower stent (31), an upper stent (32), rollers (33), an extension platform (34), a pressure positioning block (35), a magnetic block (36), an elastic bandage (37), and a guide groove (38). The bottom of the lower stent (31) is rigidly connected to the ball head rod (24). The upper stent (32) is fixedly connected to the top of both sides of the lower stent (31). The rollers (33) are rotatably connected to the inner side of the upper stent (32). An extension platform is fixedly connected to both ends of one side of the upper stent (32). (34) An outlet groove (38) is provided inside the upper bracket (32) on this side. A pressing positioning block (35) is rotatably connected to the inner side of the extension platform (34). A magnetic block (36) is fixedly connected to the bottom end of the pressing positioning block (35). An elastic bandage (37) is provided between the upper brackets (32). One end of the elastic bandage (37) is fixed to the upper bracket (32), and the other end extends to the outside through the outlet groove (38). A magnetic block that cooperates with the magnetic block (36) is provided at the pressing position of the pressing positioning block (35).

3. The fixing device for a blood collection device according to claim 2, characterized in that: The outer layer material of the fixing sheet (12) includes at least silicone, and the inner core structure is a high-toughness steel sheet.

4. The fixing device for a blood collection device according to claim 2, characterized in that: The height of the adjustment support platform (2) is no higher than 2cm, and the height of the blood vessel fixing component (3) is no higher than 3cm; the threaded platform (22) is a high-toughness plastic product with a reserved space on its inner side and a cross groove on its top; the outer wall of the adjustment hoop (23) is provided with knurled texture, and its inner wall is a conical structure. When tightened, the conical surface compresses the grooved part of the threaded platform (22) to shrink.

5. The fixing device for a blood collection device according to claim 4, characterized in that: The lower part of the ball head rod (24) is wrapped by the slotted structure of the threaded platform (22), which can realize multi-directional movement of pitch, deflection and rotation, so as to drive the vascular fixation component (3) to adjust its spatial posture.

6. The fixing device for a blood collection device according to claim 2, characterized in that: The lower support (31) is made of high-toughness metal material and has the ability to gradually recover after being opened, so as to realize the opening and closing movement; the roller (33) is used to guide the blood collection tube into the space between the lower support (31) and the upper support (32) to avoid hard contact damage to the blood collection tube.

7. The fixing device for a blood collection device according to claim 2, characterized in that: The elastic bandage (37) is made of rubber or silicone. The tightness of the elastic bandage (37) is adjusted by stretching or pulling back the elastic bandage (37) that extends through the guide groove (38), thereby adjusting the distance between the elastic bandage (37) and the rollers (33) on both sides to accommodate blood collection tubes of different diameters.

8. The fixing device for a blood collection device according to claim 1, characterized in that: The adjustment support platform (2) includes a connecting platform (21), a threaded platform (22), an adjusting hoop (23), and a ball head rod (24). The connecting platform (21) includes a first mounting block (211), a second mounting block (212), a stroke groove (213), a first spring (214), a locking ball (215), a connecting sleeve (216), a push post (217), a second spring (218), a push plate (219), and a mating groove (220). The bottom end of the first mounting block (211) is fixedly connected to the fixing component (1), and the top end of the second mounting block (212) is fixedly connected to the threaded platform (22); the first mounting block (211) has a stroke groove (213) on both sides, a first spring (214) is fixed in the stroke groove (213), and a locking ball (215) is fixed on one side of the first spring (214); The second mounting block (212) is fixed with connecting sleeves (216) on both sides. A push post (217) is slidably connected to the inner side of the connecting sleeve (216). A mating groove (220) is opened on the side of the push post (217) near the lock ball (215). A second spring (218) is fixed on the side of the connecting sleeve (216) away from the lock ball (215). A push plate (219) is fixed on the other side of the push post (217). The push plate (219) is fixedly connected to the second spring (218). The first mounting block (211) and the second mounting block (212) are inserted into each other, and the mounting connection is completed by locking the ball (215) into the mating groove (220). Pressing the push plate (219) can drive the push post (217) to push out the lock ball (215) to achieve unlocking and separation. The locking ball (215) and the mating groove (220) are in clearance fit.

9. The fixing device for a blood collection device according to claim 1, characterized in that: The fixing assembly (1) includes an upper clamp (111), a lower clamp (112), a locking screw (113), and a fitting sleeve (114); One end of the upper clamp (111) is rotatably connected to one end of the lower clamp (112), and the other end of the upper clamp (111) is rotatably connected to a locking screw (113). The outer side of the locking screw (113) is threadedly connected to the fitting sleeve (114). The upper clamp (111) and the lower clamp (112) are both provided with reserved slots on their inner sides. The locking screw (113) is clearance-fitted with the reserved slots, and the width of the fitting sleeve (114) is greater than the reserved slots. Rotating the fitting sleeve (114) can squeeze the free ends of the upper clamp (111) and the lower clamp (112) together, reducing the clamp ring diameter and achieving locking. Rotating the fitting sleeve (114) in the opposite direction can unlock and separate the clamps.

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