A finger blood collection device

Abstract

This invention provides a finger blood collection device, relating to the field of blood collection auxiliary instruments. It includes a housing, a finger sleeve, a pricking assembly, a pressing assembly, and an elastic element. The housing and the pressing assembly are both disposed on the finger sleeve. The finger sleeve has a through hole, which, along with the pressing assembly, is located within the housing. The pricking assembly is disposed on the housing and slidably connected to it. One end of the elastic element is connected to the housing, and the other end is connected to the pricking assembly. The output end of the pressing assembly is drively connected to the pricking assembly. The pressing assembly controls the extension and retraction of the elastic element. The elastic element drives the pricking assembly in and out of the through hole. This invention solves the problem of difficult finger blood collection in children.

Description

Technical Field

[0001] This invention relates to the field of blood collection auxiliary device technology, and more specifically, to a finger blood collection device. Background Technology

[0002] Finger prick blood sampling is an essential method of sampling the fingertips in pediatric examinations such as routine blood tests and allergen screenings. Compared to adults, children's mental development is not yet mature, and they generally have a fear of needles. When they see the needle, they are prone to violent crying, struggling, and withdrawing their fingers, which is a major challenge in pediatric blood collection. Currently, most commercially available finger prick blood collection devices have exposed needles and structures, which children can directly see, easily exacerbating their fear. At the same time, existing blood collection devices lack finger restraint structures adapted to children's fingers. The child's struggle and shaking can directly lead to puncture misalignment, larger wounds, and failed blood collection, greatly increasing the difficulty of pediatric blood collection and adding to the burden of blood collection and comforting for medical staff and parents.

[0003] In addition, existing blood collection devices cannot achieve complete needle concealment throughout the entire blood collection process, leaving the needle visible and failing to eliminate the root cause of children's fear visually. Furthermore, conventional products lack an integrated finger cot restraint structure, making it impossible to stably secure children's small fingers. This results in extremely poor puncture accuracy due to struggling and shaking, easily causing unnecessary skin and flesh damage. Additionally, the traditional blood collection device's press-and-release mechanism is poorly coordinated, making the needle ejection and retraction speed uncontrollable. This can easily lead to excessively deep punctures, large wounds, and excessive bleeding on children's delicate skin, exacerbating the pain and psychological trauma associated with blood collection. Summary of the Invention

[0004] Therefore, in order to solve the problem of difficulty in collecting blood from children's fingers, this invention provides a finger blood collection device, the specific technical solution of which is as follows: A finger blood collection device includes a housing, a finger sleeve, a pricking assembly, a pressing assembly, and an elastic element. The housing and the pressing assembly are both disposed on the finger sleeve. The finger sleeve has a through hole, which, along with the pressing assembly, is located within the housing. The pricking assembly is disposed on the housing and slidably connected to it. One end of the elastic element is connected to the housing, and the other end is connected to the pricking assembly. The output end of the pressing assembly is drively connected to the pricking assembly. The pressing assembly controls the extension and retraction of the elastic element. The elastic element drives the pricking assembly to move in and out of the through hole.

[0005] The aforementioned finger blood collection device integrates the puncture component entirely within the outer shell, while the outer shell and pressing component are all integrated onto the finger sleeve. The finger sleeve and the outer shell form a fully enclosed shielding cavity, and the blood collection needle is hidden inside the outer shell throughout the entire blood collection process. Puncture can only be completed through the through hole on the finger sleeve, and children cannot see the sharp blood collection needle tip at all. Children will not experience tension, fear, crying, or struggling upon seeing a needle, thus addressing the root cause of children's fear of needles during blood collection. This eliminates the need for lengthy reassurance from parents and medical staff, greatly simplifying the pre-treatment reassurance process for pediatric blood collection. Using a finger cot as a support, it can be directly fitted and secured to the child's finger. Combined with the puncture component's sliding trajectory defined by the outer shell, the needle can only enter and exit vertically along the through-hole. Even if the child is slightly agitated, there will be no issues such as needle misalignment or scratches on the side of the finger. This design is suitable for children who are less cooperative and prone to movement during blood collection, improving blood collection safety and the success rate of a single blood collection attempt. After the blood collection is completed, the elastic element immediately retracts the puncture component into the outer shell, instantly and completely concealing the needle, leaving no period of needle exposure after blood collection. This finger blood collection device prevents children from being startled by the needle after blood collection and completely avoids the safety risks of the needle accidentally touching children's fingers or medical staff's hands. The sealed outer shell also isolates the needle from external bacteria and dust, ensuring its cleanliness and reducing the probability of infection at the blood collection site. This device solves the problem of difficult finger blood collection for children.

[0006] Furthermore, the pricking assembly includes a blood collection needle and a lifting block; the blood collection needle is disposed on the lifting block; the lifting block is inserted into the outer casing and slidably connected to the outer casing.

[0007] Furthermore, the outer casing is provided with a vertically oriented slide rail; the lifting block is provided with a sliding block, which is inserted into the slide rail and slidably connected to the slide rail.

[0008] Furthermore, the outer shell includes a housing, a first connecting portion, and a second connecting portion with an annular outer contour; the housing is disposed on the finger sleeve; the first connecting portion and the second connecting portion are both disposed inside the housing; one end of the first connecting portion is connected to the inner wall surface of the housing, the other end of the first connecting portion is connected to the second connecting portion, and the second connecting portion and the through hole are coaxially arranged.

[0009] Furthermore, one end of the elastic element is connected to the lifting block, and the other end of the elastic element is connected to the second connecting part. The elastic element is sleeved on the outside of the blood collection needle, and the elastic element is used to drive the blood collection needle in and out of the second connecting part and the through hole.

[0010] Furthermore, the pressing assembly includes a swing structure, a first connecting rod, and a pressing structure; the swing structure is disposed on the finger sleeve, one end of the first connecting rod is connected to the lifting block, the other end of the first connecting rod is connected to the output end of the swing structure, and the pressing structure is connected to the input end of the swing structure.

[0011] Furthermore, the swing structure includes a support frame, a swing rod, and a hinge; the support frame is mounted on the finger sleeve, and the swing rod is mounted on the support frame and hinged to the support frame.

[0012] Furthermore, the hinge portion is located on one end of the swing rod, and the hinge portion is hinged to the end of the first connecting rod away from the lifting block.

[0013] Furthermore, the pressing structure includes a second connecting rod and a button; one end of the second connecting rod is connected to the end of the swing rod away from the hinge, and the other end of the second connecting rod is connected to the button.

[0014] Furthermore, the finger blood collection device also includes a finger fixator, which comprises a palm strap, Velcro, a fixing strip, and a finger ring. The Velcro is attached to the palm strap and works with it to secure it to the palm. One end of the fixing strip is connected to the palm strap, and the other end is connected to the finger ring, which is used to be placed on the finger for blood collection. The palm strap also has multiple finger sleeves arranged sequentially on the side of the palm strap facing the back of the hand. The finger sleeves are for insertion of the fingers of parents, family members, or medical personnel. Attached Figure Description

[0015] The invention will be further understood from the following description taken in conjunction with the accompanying drawings. The components in the drawings are not necessarily drawn to scale, but rather the emphasis is on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0016] Figure 1 This is a schematic diagram of the structure of a finger blood collection device according to an embodiment of the present invention; Figure 2 This is one of the cross-sectional views of a finger blood collection device according to an embodiment of the present invention; Figure 3 This is a second cross-sectional view of the finger blood collection device according to an embodiment of the present invention; Figure 4 This is one of the structural schematic diagrams of the finger fixation device of the finger blood collection device according to an embodiment of the present invention; Figure 5 This is a second schematic diagram of the structure of the finger fixation device of the finger blood collection device according to an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1-Hand strap; 2-Hook and loop fastener; 3-Fixing strip; 4-Finger ring; 5-Finger cot; 6-Fixing plate; 7-Hemostatic tape; 8-Fixing bag; 9-Outer shell; 91-Shell; 92-First connecting part; 93-Second connecting part; 10-Finger cot; 11-Prickling assembly; 111-Blood lancet; 112-Lifting block; 12-Pressing assembly; 121-First connecting rod; 122-Support frame; 123-Swing rod; 124-Hinge; 125-Second connecting rod; 126-Button; 13-Elastic element; 14-Slide rail; 15-Sliding block. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of protection of the invention.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] In this invention, the terms "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.

[0022] like Figures 1-3As shown, a finger blood collection device according to an embodiment of the present invention includes a housing 9, a finger sleeve 10, a pricking assembly 11, a pressing assembly 12, and an elastic element 13. The housing 9 and the pressing assembly 12 are both disposed on the finger sleeve 10. The finger sleeve 10 has a through hole, and both the through hole and the pressing assembly 12 are disposed within the housing 9. The pricking assembly 11 is disposed on the housing 9 and slidably connected to it. One end of the elastic element 13 is connected to the housing 9, and the other end is connected to the pricking assembly 11. The output end of the pressing assembly 12 is drively connected to the pricking assembly 11. The pressing assembly 12 controls the extension and retraction state of the elastic element 13. The elastic element 13 drives the pricking assembly 11 in and out of the through hole.

[0023] The aforementioned finger blood collection device houses the puncture component 11 entirely within the outer shell 9. Simultaneously, the outer shell 9 and the pressing component 12 are all integrated onto the finger sleeve 10. Relying on the finger sleeve 10 and the outer shell 9 to form a fully enclosed shielding cavity, the blood collection needle 111 is hidden inside the outer shell 9 throughout the entire blood collection process. Puncture can only be completed through the through hole on the finger sleeve 10, ensuring that children cannot see the sharp tip of the blood collection needle 111 at all. Children will not experience tension, fear, crying, or struggling upon seeing the needle, thus addressing the root cause of children's fear of needles during blood collection. This eliminates the need for lengthy reassurance from parents and medical staff, greatly simplifying the pre-treatment reassurance process for pediatric blood collection. By using the finger sleeve 10 as a support base, it can be directly fitted and fixed onto the child's finger. With the sliding trajectory of the puncture component 11 defined by the outer shell 9, the needle can only enter and exit vertically along the through hole. Even if the child is slightly agitated, there will be no issues such as needle misalignment or scratching the side of the finger. This design is suitable for children who have low cooperation and are prone to movement during blood collection, improving the safety of blood collection and the success rate of blood collection on the first attempt. After the blood collection is completed, the elastic element 13 can immediately retract the puncture component 11 into the outer shell 9, instantly and completely hiding the needle, with no period of needle exposure after blood collection. This finger blood collection device prevents children from being startled by the needle after blood collection and completely avoids the safety risks of the needle accidentally touching children's fingers or medical staff's hands. Simultaneously, the sealed outer shell isolates external bacteria and dust, ensuring the cleanliness of the needle and reducing the probability of infection at the blood collection site. This device solves the problem of difficult finger blood collection for children.

[0024] like Figures 1-3As shown, in one embodiment, the pricking assembly 11 includes a blood collection needle 111 and a lifting block 112; the blood collection needle 111 is disposed on the lifting block 112; the lifting block 112 is inserted into the outer shell 9 and slidably connected to the outer shell 9; the outer shell 9 is provided with a vertically oriented slide rail 14; the lifting block 112 is provided with a sliding block 15, the sliding block 15 is inserted into the slide rail 14 and slidably connected to the slide rail 14; the outer shell 9 includes a housing 91, a first connecting part 92 and a second connecting part 93 with an annular outer contour; the housing 91 is disposed on the finger sleeve 10. Both the first connecting part 92 and the second connecting part 93 are located inside the housing 91. One end of the first connecting part 92 is connected to the inner wall of the housing 91, and the other end of the first connecting part 92 is connected to the second connecting part 93. The second connecting part 93 is coaxially arranged with the through hole. One end of the elastic element 13 is connected to the lifting block 112, and the other end of the elastic element 13 is connected to the second connecting part 93. The elastic element 13 is sleeved on the outside of the blood collection needle 111, and the elastic element 13 is used to drive the blood collection needle 111 in and out of the second connecting part 93 and the through hole. In this way, by relying on the rigid guiding cooperation of the vertical slide 14 and the sliding block 15, the lifting block 112 can only slide back and forth in a straight line in the vertical direction, completely eliminating the problems of the blood collection needle 111 shifting left and right, swaying back and forth, or getting stuck and tilted. Even if a child's finger suddenly twists or shakes during blood collection, the lancet will still move vertically through the hole, preventing scratches on the skin around the finger wound and avoiding enlarging the wound. This further improves the comfort of blood collection for children and reduces crying caused by stinging.

[0025] like Figures 1-3As shown, in one embodiment, the pressing assembly 12 includes a swing structure, a first connecting rod 121, and a pressing structure; the swing structure is disposed on the finger sleeve 10, one end of the first connecting rod 121 is connected to the lifting block 112, and the other end of the first connecting rod 121 is connected to the output end of the swing structure; the pressing structure is connected to the input end of the swing structure; the swing structure includes a support frame 122, a swing rod 123, and a hinge portion 124; the support frame 122 is disposed on the finger sleeve 10. The swing rod 123 is mounted on the support frame 122 and hinged to it. A hinge portion 124 is located at one end of the swing rod 123 and is hinged to the end of the first connecting rod 121 away from the lifting block 112. The pressing structure includes a second connecting rod 125 and a button 126. One end of the second connecting rod 125 is connected to the end of the swing rod 123 away from the hinge portion 124, and the other end of the second connecting rod 125 is connected to the button 126. Thus, by utilizing the lever hinge principle of the swing rod 123 to amplify the pressing stroke and reduce the pressing force, medical personnel only need to press the button 126 with minimal pressure to drive the swing rod 123 to swing via the second connecting rod 125, and then the first connecting rod 121 pulls the lifting block 112 downwards to complete the blood collection puncture. No need for strong pressure, conforming to the gentle operation guidelines of pediatrics, avoiding excessive manual force that could lead to deep punctures, and protecting the delicate fingertips of children.

[0026] like Figures 4-5As shown, in one embodiment, the finger blood collection device further includes a finger fixator, which includes a palm strap 1, Velcro 2, a fixing strip 3, and a finger ring 4. The Velcro 2 is disposed on the palm strap 1 and cooperates with the palm strap 1 to fix it to the palm. One end of the fixing strip 3 is connected to the palm strap 1, and the other end of the fixing strip 3 is connected to the finger ring 4. The finger ring 4 is used to be put on the finger for blood collection. The palm strap 1 is also provided with a plurality of finger sleeves 5 arranged in sequence. The finger sleeves 5 are disposed on the side of the palm strap 1 facing the back of the hand. The finger sleeves 5 are used for the fingers of parents, family members, or medical personnel to insert. In this way, by setting the palm strap 1, the patient's entire palm is wrapped and fixed. Then, the fixing strip 3 connects to the finger ring 4 and is individually put on the finger to be blooded, realizing a dual fixation mode of overall palm fixation + point-to-point limiting of the blood collection finger. At the same time, multiple finger sleeves 5 are added to the back of the hand, which can be directly inserted into the finger sleeves 5 by medical staff or parents to form external auxiliary clamping force. The entire hand is restrained and limited, and the finger for blood collection is precisely fixed by the finger ring 4. The two are linked by the fixing strip 3 for further restraint. Combined with the auxiliary pressure of an external person inserting their finger into the finger sleeve 5, this triple restraint completely overcomes the problems of hand shaking and retraction caused by the child's crying, struggling, and pain reflex. It also eliminates problems such as needle deviation, puncture failure, and secondary scratches, significantly improving the success rate of the first puncture and greatly reducing the child's pain during blood collection. The hand restraint 1 is used in conjunction with Velcro 2 for wearing and fixing, eliminating the need for complex locking structures such as buckles and ropes. Medical staff can complete the wrapping and fastening of the hand restraint 1 in seconds, and the finger ring 4 can be directly and quickly slipped onto the finger for blood collection. The overall dressing and disassembly process is simple and quick, suitable for the large-volume, fast-paced finger puncture work in outpatient clinics, without delaying the efficiency of blood collection diagnosis and treatment. This finger fixator solves the problem of high difficulty in single-person blood collection.

[0027] like Figure 4 As shown, in one embodiment, the hand strap 1 includes an elastic strap and a fixing plate 6. The fixing plate 6 is embedded in the elastic strap, and the fixing strip 3 is connected to the fixing plate 6. Thus, by pre-embedding the fixing plate 6 inside the hand strap 1 and combining it with the elastic strap externally, the overall fit and support stability of the strap are balanced. This provides a stable connection base for the fixing strip 3, avoiding the problems of stretching deformation and positional displacement that occur when the fixing strip 3 is directly connected to the flexible elastic strap. This ensures that the relative position of the fixing strip 3 and the finger ring 4 remains unchanged, continuously and stably restricting the movement of the finger used for blood collection, and improving the overall robustness of the limiting structure.

[0028] like Figure 5As shown, in one embodiment, the finger fixator also includes a hemostatic tape 7 and a fixation bag 8; the fixation bag 8 is disposed on the palm strap 1 and on the side facing the fingertip; one end of the hemostatic tape 7 is connected to the palm strap 1, and the other end of the hemostatic tape 7 is inserted into the fixation bag 8. Thus, by adding a fixation bag 8 and a matching hemostatic tape 7 to the fingertip side of the hand strap 1, the fixation function and the post-blood collection hemostasis function are integrated into one, optimizing the entire blood collection process: First, the hemostatic tape 7 is directly integrated into the fixator body. After blood collection, medical staff do not need to take separate hemostatic swabs or hemostatic tape 7. They can simply tear off the hemostatic tape 7 integrated into the device and apply it to the needle site, reducing the hand operation steps of medical staff and realizing one-stop completion of fixation, blood collection, and hemostasis, thus improving the overall process efficiency. Second, one end of the hemostatic tape 7 is connected to the strap, and the other end can be stored and inserted into the fixation bag 8 to fix the hemostatic tape 7.

[0029] like Figure 4 As shown, in one embodiment, the Velcro 2 includes a hook surface and a rough surface that cooperate with each other, respectively disposed at both ends of the hand strap 1 to achieve adjustment and fixation of the strap's tightness. Thus, by using the hook and rough surfaces of the Velcro 2 disposed at both ends of the hand strap 1 and cooperating with each other, compared to a single piece of Velcro 2, the range of tightness adjustment is wider and the fixation adaptability is stronger: since both ends of the strap have cooperating surfaces, the circumference of the strap can be freely adjusted according to the patient's palm size and thickness, precisely controlling the tightness of the strap. This prevents the strap from compressing blood vessels in the palm and causing bruising or numbness due to excessive tightness, and also prevents the strap from slipping off and failing to fix due to excessive looseness.

[0030] In one embodiment, the hand strap 1, Velcro 2, fixing strip 3, and finger ring 4 are all made of medical-grade flexible material.

[0031] In one embodiment, the finger blood collection device is packaged in a disposable sealed package.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A finger blood collection device, characterized in that, The device includes a shell, a finger sleeve, a dotting assembly, a pressing assembly, and an elastic element. The shell and the pressing assembly are both mounted on the finger sleeve. The finger sleeve has a through hole, which, along with the pressing assembly, is located within the shell. The dotting assembly is mounted on the shell and slidably connected to it. One end of the elastic element is connected to the shell, and the other end is connected to the dotting assembly. The output end of the pressing assembly is drively connected to the dotting assembly. The pressing assembly controls the extension and retraction of the elastic element. The elastic element drives the dotting assembly in and out of the through hole.

2. The finger blood collection device according to claim 1, characterized in that, The pricking assembly includes a blood collection needle and a lifting block; the blood collection needle is disposed on the lifting block; the lifting block is inserted into the outer shell and slidably connected to the outer shell.

3. The finger blood collection device according to claim 2, characterized in that, The outer casing is provided with a vertically oriented slide rail; the lifting block is provided with a sliding block, which is inserted into the slide rail and slidably connected to the slide rail.

4. The finger blood collection device according to claim 2, characterized in that, The outer shell includes a housing, a first connecting portion, and a second connecting portion with an annular outer contour; the housing is disposed on the finger sleeve; the first connecting portion and the second connecting portion are both disposed inside the housing; one end of the first connecting portion is connected to the inner wall surface of the housing, the other end of the first connecting portion is connected to the second connecting portion, and the second connecting portion and the through hole are coaxially arranged.

5. The finger blood collection device according to claim 4, characterized in that, One end of the elastic element is connected to the lifting block, and the other end of the elastic element is connected to the second connecting part. The elastic element is sleeved on the outside of the blood collection needle and is used to drive the blood collection needle in and out of the second connecting part and the through hole.

6. The finger blood collection device according to claim 2, characterized in that, The pressing assembly includes a swing structure, a first connecting rod, and a pressing structure; the swing structure is disposed on the finger sleeve, one end of the first connecting rod is connected to the lifting block, the other end of the first connecting rod is connected to the output end of the swing structure, and the pressing structure is connected to the input end of the swing structure.

7. The finger blood collection device according to claim 6, characterized in that, The swing structure includes a support frame, a swing rod, and a hinge; the support frame is mounted on the finger sleeve, and the swing rod is mounted on the support frame and hinged to the support frame.

8. The finger blood collection device according to claim 7, characterized in that, The hinge is located on one end of the swing rod, and the hinge is hinged to the end of the first connecting rod away from the lifting block.

9. The finger blood collection device according to claim 7, characterized in that, The pressing structure includes a second connecting rod and a button; one end of the second connecting rod is connected to the end of the swing rod away from the hinge, and the other end of the second connecting rod is connected to the button.

10. The finger blood collection device according to claim 1, characterized in that, The finger blood collection device also includes a finger fixator, which comprises a palm strap, Velcro, a fixing strip, and a finger ring. The Velcro is attached to the palm strap and works with it to secure it to the palm. One end of the fixing strip is connected to the palm strap, and the other end is connected to the finger ring, which is used to be placed on the finger for blood collection. The palm strap also has multiple finger sleeves arranged sequentially on the side of the palm strap facing the back of the hand. The finger sleeves are for insertion of the fingers of parents, family members, or medical personnel.

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