Newborn blood sampling pen
By designing a newborn blood collection pen, which combines suction tubes, needles, and negative pressure suction bulbs, the problem of uneven blood coverage on the test strip during newborn blood collection is solved, achieving efficient, safe, and low-cost blood collection operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 175TH HOSPITAL OF PEOPLES LIBERATION ARMY
- Filing Date
- 2025-01-09
- Publication Date
- 2026-04-17
AI Technical Summary
During newborn blood collection, it is difficult to accurately and evenly coat the test strip with blood, resulting in low blood collection efficiency, high re-collection rate, and difficulty for newborns to cooperate with blood collection for extended periods.
A newborn blood collection pen was designed, including a pen shell, a suction tube, a needle device, and a negative pressure suction bulb. Through a detachable integrated design, the suction tube is coated with a hydrophilic coating, the needle tip has an indicator scale, the pen shell and suction tube are made of transparent material for easy observation of the blood collection volume, a locking device controls the position of the suction tube, and a storage part stores the needle device.
It improves the blood coverage on the test strip, reduces the re-collection rate, increases blood collection efficiency, simplifies the operation process, reduces manufacturing costs, and ensures the accuracy and safety of blood collection.
Smart Images
Figure CN224125953U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical blood collection devices, and in particular to a newborn blood collection pen. Background Technology
[0002] Newborns need to undergo disease screening after birth. The first step in this screening is blood collection. The steps are as follows: 1. Disinfect the skin; 2. Prick the designated area on the newborn with a needle; 3. After bleeding occurs, use a special test strip to cover the bleeding point, allowing the blood to fill the designated area (usually several small circles) of the test strip. However, newborns may move around, making it difficult to accurately and evenly cover the designated area on the test strip. Therefore, this process is time-consuming. Care must be taken to ensure accurate placement, otherwise, blood may need to be drawn again, making it inefficient. Furthermore, the newborn needs to be held down and the blood collected multiple times (usually four small circles), which newborns are unlikely to cooperate for so long. Utility Model Content
[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a newborn blood collection pen.
[0004] To achieve the above objectives, the present invention provides the following technical solution:
[0005] A neonatal blood collection pen includes a pen shell, the interior of which forms a receiving cavity, a suction tube is slidably adapted to the receiving cavity, and a locking device to restrict the relative movement between the suction tube and the receiving cavity; one end of the suction tube is detachably connected to a needle device, and the other end of the suction tube is connected to a negative pressure suction bulb.
[0006] Furthermore, the needle device includes a needle body and a needle tip that are fixedly connected. The needle body is sleeved on or screwed onto one end of the suction tube, and the needle tip faces outward from the pen casing.
[0007] Furthermore, the needle tip is provided with a first indicator scale, which is 2mm-4mm away from the outward end face of the needle tip.
[0008] Furthermore, the pen casing and suction tube are made of transparent material, and the outer wall of the pen casing or suction tube is provided with a second indicator scale.
[0009] Furthermore, the inner wall of the suction tube is coated with a hydrophilic coating, making it difficult for blood to adhere to the inner wall of the suction tube.
[0010] Furthermore, the locking device includes a U-shaped fixing seat disposed in the receiving cavity, the internal space of the U-shaped fixing seat forming a receiving groove for placing the suction tube, and also includes a locking member, which is threaded through one side of the pen shell and one side of the U-shaped fixing seat and then abuts against one side of the suction tube.
[0011] Furthermore, the locking member has an abutting portion at one end of the suction tube.
[0012] Furthermore, the end of the contact portion facing the suction tube is provided with a first anti-slip portion.
[0013] Furthermore, the outer wall of the pen casing is provided with a second anti-slip part.
[0014] Furthermore, the outer wall of the pen casing is provided with a storage part having an opening, the shape and size of which are adapted to the needle device, and the opening of the storage part is provided with a movable sliding cover to close the opening.
[0015] The beneficial effects of this utility model are:
[0016] 1. This utility model proposes a neonatal blood collection pen, including a pen shell, the internal space of which forms a receiving cavity, a suction tube slidably adapted to the receiving cavity, and a locking device to restrict the relative movement between the suction tube and the receiving cavity; one end of the suction tube is detachably connected to a needle device, and the other end is connected to a negative pressure suction bulb. This device integrates the needle device, suction tube, and negative pressure suction bulb into a detachable unit. After puncturing the newborn's skin, blood is drawn into the suction tube, and then the suction tube is aligned with the designated area of the test strip for blood collection. Compared with directly pressing the newborn's bleeding point to contact the test strip, this method allows the blood to more accurately and evenly coat the test strip, improving the sample qualification rate, reducing the re-collection rate, and improving overall efficiency. After puncturing the needle, only the newborn needs to be held to cooperate with blood collection once. Furthermore, this structure is simple and easy to use, has low manufacturing cost, and can be mass-produced and used.
[0017] 2. The present invention proposes a newborn blood collection pen, wherein the needle device includes a needle body and a needle tip that are fixedly connected. The needle body is sleeved on or screwed onto one end of the suction tube, and the needle tip faces outward from the pen shell. With this arrangement, after puncturing the newborn's skin, the needle device can be quickly removed, exposing one end of the suction tube for blood collection.
[0018] 3. The newborn blood collection pen proposed in this utility model has a first indicator scale on the needle tip. The first indicator scale is 2mm-4mm away from the end face of the needle tip facing outward. The first indicator scale can help medical staff to better control the depth of the needle when inserting the needle, so as to avoid excessive bleeding due to excessive insertion or insufficient bleeding due to insufficient insertion, which will not be enough to cover the designated area of the test strip.
[0019] 4. The present invention proposes a newborn blood collection pen, the pen shell and suction tube are made of transparent material, and the outer wall of the pen shell or suction tube is provided with a second indicator scale, so that the amount of blood collected can be observed at any time, which is convenient for use.
[0020] 5. This utility model proposes a neonatal blood collection pen, the locking device of which includes a U-shaped fixing seat disposed in the receiving cavity. The internal space of the U-shaped fixing seat forms a receiving groove for placing the aspiration tube. It also includes a locking member, which is threaded through one side of the pen shell and one side of the U-shaped fixing seat and then abuts against the side of the aspiration tube. The sliding of the aspiration tube in the receiving cavity is controlled by tightening and loosening the locking member. When not in use, the needle device is retracted in the receiving cavity, so there is no need to set a protective cap for the needle device. It is slid out and exposed when it is needed.
[0021] 6. The present invention proposes a newborn blood collection pen, wherein the outer wall of the pen shell is provided with a storage part with an opening. The shape and size of the storage part are adapted to the needle device, and the opening of the storage part is provided with a movable sliding cover to close the opening. The storage part is designed to facilitate the immediate storage of used needle devices, which can avoid the situation where there is no place or time to throw away the needle device immediately after it has been used, and prevent it from being accidentally dropped and lost after being temporarily placed somewhere. After the blood collection tube is used, it can be taken away and disposed of together. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of a newborn blood collection pen according to the present invention (in a non-use state);
[0024] Figure 2 This is a schematic diagram of a newborn blood collection pen according to the present invention (in use).
[0025] Figure 3 This is an exploded view of a neonatal blood collection pen according to the present invention;
[0026] Figure 4 for Figure 2 Enlarged view of point A;
[0027] Figure 5 for Figure 3 Enlarged view of point B;
[0028] In the diagram, 10 is the pen casing; 101 is the receiving cavity; 20 is the suction tube; 30 is the needle device; 301 is the needle body; 302 is the needle tip; 40 is the negative pressure suction bulb; 501 is the first indicator scale; 502 is the second indicator scale; 60 is the locking element; 70 is the second anti-slip part; 801 is the storage part; and 802 is the sliding cover. Detailed Implementation
[0029] The following is combined with Figures 1-5 This utility model will be described in detail.
[0030] A neonatal blood collection pen includes a pen shell 10, the internal space of which forms a receiving cavity 101. A suction tube 20 is slidably fitted into the receiving cavity 101. A locking device is also included to restrict the relative movement between the suction tube 20 and the receiving cavity 101. One end of the suction tube 20 is detachably connected to a needle device 30, and the other end is connected to a negative pressure suction bulb 40. This device integrates the needle device 30, the suction tube 20, and the negative pressure suction bulb 40 in a detachable, integrated design. After puncturing the newborn's skin, blood is drawn into the suction tube 20. The suction tube 20 is then aligned with the designated area of the test strip for blood collection. Compared to directly pressing the newborn's bleeding point onto the test strip, this method ensures that the blood accurately and evenly coats the test strip, improving the sample pass rate, reducing the re-collection rate, and increasing overall efficiency. Furthermore, this structure is simple to use, has low manufacturing costs, and can be mass-produced and used.
[0031] Specifically, the negative pressure suction bulb 40 is the capsule (rubber head) of the dropper. A dropper is a common laboratory tool, typically used to precisely draw and add small amounts of liquid. The working principle of a dropper is mainly based on atmospheric pressure and the surface tension of the liquid. When the rubber head is squeezed, the air inside the tube is expelled; when the rubber head is released, the liquid is drawn into the tube due to atmospheric pressure. If the rubber head can fit as closely as possible to the blood collection point, and the rubber head has sufficient elasticity to generate sufficient suction, and the blood volume at the blood collection point is sufficient, then the rubber head can draw blood from the newborn's blood collection point into the blood collection tube. In the field of medical devices, there are existing technologies that use rubber heads to absorb blood for easier blood collection. The principle behind this can be found in existing technologies, including the required elasticity and blood volume for absorption, which are also detailed in common knowledge and existing technologies.
[0032] In this embodiment, the needle device 30 includes a needle body 301 and a needle tip 302 fixedly connected. The needle body 301 is sleeved on or screwed onto one end of the aspiration tube 20, and the needle tip 302 faces outward from the pen shell 10. This arrangement allows for quick removal of the needle device 30 after puncturing the newborn's skin, exposing one end of the aspiration tube 20 for blood aspiration. Specifically, a smaller needle tip 302 diameter allows for more precise control of blood dripping onto the test strip, but also affects dripping efficiency. The specific needle tip 302 diameter depends on the actual situation. When preparing to remove the needle device 30, the position of the aspiration tube 20 can be adjusted to expose more of one end. Combined with the fact that medical personnel are wearing gloves, this reduces the risk of accidental injury to the medical personnel's hands during the removal process.
[0033] In this embodiment, the needle tip 302 is provided with a first indicator scale 501, which is 2mm-4mm away from the outward-facing end face of the needle tip 302. The first indicator scale 501 helps medical staff to better control the depth of needle insertion, avoiding excessive bleeding due to excessive depth or insufficient bleeding due to insufficient depth, which may not cover the designated area of the test strip. To balance visibility and safety, the first indicator scale 501 can be a raised ring, so that when medical staff see the raised ring about to touch the newborn's blood collection site, they will know that it is not appropriate to insert the needle deeper.
[0034] In this embodiment, the pen casing 10 and the suction tube 20 are made of transparent material, and the outer wall of the pen casing 10 or the suction tube 20 is provided with a second indicator scale 502. This allows for constant monitoring of the amount of blood collected, making it convenient to use.
[0035] In this embodiment, the inner wall of the suction tube 20 is coated with a hydrophilic coating, making it difficult for blood to adhere to the inner wall of the suction tube 20. Specifically, the hydrophilic coating covers the entire inner wall of the suction tube 20. The hydrophilic coating can reduce the surface tension between the blood and the inner wall, making it difficult for blood to adhere to the tube wall, thereby reducing the phenomenon of blood sticking to the wall. This can minimize the loss of the amount of blood to be tested due to blood sticking to the wall; and by reducing the contact between the blood and the inner wall, it helps to maintain the originality and accuracy of the blood sample, improves the sample quality, and improves the reliability of the test results.
[0036] In this embodiment, the locking device includes a U-shaped fixing seat (not shown in the figure) disposed in the receiving cavity 101. The internal space of the U-shaped fixing seat forms a receiving groove for placing the suction tube 20. It also includes a locking member 60, which is threaded through one side of the pen shell 10 and the U-shaped fixing seat and then abuts against the side of the suction tube 20. The sliding of the suction tube 20 in the receiving cavity 101 is controlled by tightening and loosening the locking member 60. When not in use, the needle device 30 is retracted in the receiving cavity 101, so there is no need to set a protective cap for the needle device 30. It is slid out and exposed when it is needed. Specifically, the U-shaped fixing seat is fixedly installed in the receiving cavity 101. The U-shaped fixing seat can make the axis of the suction tube 20 coincide with the axis of the pen shell 10, which is equivalent to the suction tube 20 being located in the middle of the pen shell 10. Alternatively, the U-shaped fixing seat can be omitted, and only the locking member 60 can be installed. After the locking member 60 is tightened, one side of the suction tube 20 is tightly abutted against the locking member 60, and the other side of the suction tube 20 is tightly abutted against the inner wall of the receiving cavity 101. The threads on one side of the pen shell 10 and the U-shaped fixing seat are respectively used to adapt to the locking member 60 and can be connected. The two threads can be regarded as a whole and achieve threaded engagement with the threads of the locking member 60. Alternatively, only one side of the pen shell 10 and the U-shaped fixing seat has a threaded hole, and the other side has a through hole without threads.
[0037] In this embodiment, the locking member 60 has an abutting portion (not shown in the figure) at one end abutting against the suction tube 20; further, the end of the abutting portion facing the suction tube 20 has a first anti-slip portion. Specifically, the abutting portion is an abutting pad, the diameter of which is larger than the end diameter of the locking member 60 abutting against the suction tube 20, and the shape of the abutting pad is adapted to the shape of the outer wall of the suction tube 20; the first anti-slip portion is anti-slip stripes, anti-slip protrusions, etc.
[0038] In this embodiment, the outer wall of the pen casing 10 is provided with a second anti-slip part 70. Specifically, the second anti-slip part 70 may be anti-slip stripes, anti-slip bumps, anti-slip pads, etc.
[0039] In this embodiment, the outer wall of the pen casing 10 is provided with a storage portion 801 containing an opening. The shape and size of the storage portion 801 are adapted to the needle device 30, and the opening of the storage portion 801 is provided with a movable sliding cover 802 to close the opening. The storage portion 801 facilitates the immediate storage of used needle devices 30, avoiding the situation where there is nowhere or time to immediately discard the needle device 30 after injection, and preventing it from being accidentally dropped and lost after being temporarily placed somewhere. It can be disposed of together with the suction tube 20 after use. Specifically, the sliding cover 802 is slidably connected to the opening of the storage portion 801. The opening is opened by sliding the sliding cover 802, and the opening is also locked when the sliding cover 802 is fully closed. The structure of the sliding cover 802 is similar to that of the prior art, such as the battery cover on the back of an electrical remote control.
[0040] The neonatal blood collection pen proposed in this utility model is used as follows:
[0041] The entire lancing device is packaged in a sterile bag, one device per bag, for single use only, and should be discarded after use. After completing the pre-sterilization of the neonatal blood collection point (usually a finger or toe), medical staff remove the packaging bag and take out the lancing device. Loosen the locking piece 60 of the lancing device, grasp the other end of the exposed suction tube 20, slide the suction tube 20 into the receiving cavity 101, so that the needle device 30 located at one end of the suction tube 20 is exposed, then tighten the locking piece 60 to fix the position of the suction tube 20, and begin to insert the needle device 30 into the skin.
[0042] After pricking, remove the needle device 30. After removal, open the sliding cover 802 of the storage section 801, insert the needle device 30, and then close the sliding cover 802. Readjust the position of the suction tube 20, ensuring that the exposed end of the suction tube 20 without the needle device 30 is in full contact with the skin of the newborn's blood collection point. Then, gently squeeze the negative pressure suction bulb 40 (rubber tip) to draw blood into the suction tube 20. Then, drip the blood into several small circles on the test strip (the operation of the negative pressure suction bulb 40 is similar to the use of droppers in existing technology and common knowledge, and will not be described in detail here).
[0043] After use, dispose of the lancing device as required, and the blood collection is complete.
[0044] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A neonatal lancet, comprising: The device includes a pen casing, the interior of which forms a receiving cavity, a suction tube that is slidably fitted into the receiving cavity, and a locking device to restrict the relative movement between the suction tube and the receiving cavity; one end of the suction tube is detachably connected to a needle device, and the other end of the suction tube is connected to a negative pressure suction bulb.
2. A neonatal lancet according to claim 1, wherein The needle device includes a needle body and a needle tip that are fixedly connected. The needle body is sleeved on or screwed onto one end of the suction tube, and the needle tip faces outward from the pen shell.
3. A neonatal lancing device according to claim 2, wherein the lancet is mounted on a rotatable arm which is rotatable about a vertical axis. The needle tip is provided with a first indicator scale, which is 2mm-4mm away from the outer end face of the needle tip.
4. The neonatal lancing device of claim 1, wherein the lancet is a single-use lancet. The pen casing and suction tube are made of transparent material, and the outer wall of the pen casing or suction tube is provided with a second indicator scale.
5. The neonatal lancing device of claim 1, wherein the lancet is a single-use lancet. The inner wall of the suction tube is coated with a hydrophilic coating, which makes it difficult for blood to adhere to the inner wall of the suction tube.
6. A neonatal lancet according to claim 1, wherein, The locking device includes a U-shaped fixing seat disposed in the receiving cavity, the internal space of the U-shaped fixing seat forming a receiving groove for placing the suction tube, and also includes a locking member, which is threaded through one side of the pen shell and one side of the U-shaped fixing seat and then abuts against one side of the suction tube.
7. A neonatal lancing device according to claim 6, wherein the lancet is mounted on a rotatable arm which is rotatable about a vertical axis. The locking member has an abutting part at one end of the suction tube.
8. A neonatal lancing device according to claim 7, wherein the lancet is arranged to be moved from the first position to the second position by the user. The end of the contact portion facing the suction tube is provided with a first anti-slip portion.
9. The neonatal lancing device of claim 1, wherein the lancet is a single-use lancet. The outer wall of the pen casing is provided with a second anti-slip part.
10. The neonatal lancing device of claim 1, wherein the lancet is a single-use lancet. The outer wall of the pen casing is provided with a storage part with an opening. The shape and size of the storage part are adapted to the needle device, and the opening of the storage part is provided with a movable sliding cover to close the opening.