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CN-121971085-A - Vacuum blood collection tube for high hematocrit patient

CN121971085ACN 121971085 ACN121971085 ACN 121971085ACN-121971085-A

Abstract

The invention relates to the field of medical auxiliary instruments, in particular to a vacuum blood collection tube for patients with high hematocrit, which comprises a tube body, wherein a sealing component for sealing the tube body is arranged at the top of the tube body, a medicine delivery cabin is arranged at the bottom of the tube body, a buoyancy cabin filled with gas is arranged in the medicine delivery cabin, a medicine cabin filled with medicine is arranged below the buoyancy cabin, a cavity is arranged at the bottom of the medicine cabin, limiting tables are arranged on the inner side walls of the cavity, medicine delivery tubes below the limiting tables are arranged on the side walls of the cavity, sliding blocks extending out of the medicine delivery cabin are in sliding fit in the cavity, the side walls of the sliding blocks are provided with "<" shaped medicine delivery tubes, the number of which corresponds to that of the medicine delivery tubes, and limiting blocks are arranged above the "<" medicine delivery tubes at the top of the sliding blocks. According to the invention, the medicine is automatically mixed with blood in the blood collection tube by the medicine delivery cabin in the blood collection process, so that the shaking times of medical staff on the blood collection tube are reduced, the workload of the medical staff is further reduced, and the inspection work efficiency is improved.

Inventors

  • LIU LIN
  • XIANG SHENGPING
  • LIN YIZE
  • Pan Baili
  • LAI JIJIA
  • HE YAN

Assignees

  • 西藏自治区人民政府驻成都办事处医院

Dates

Publication Date
20260505
Application Date
20260302

Claims (10)

  1. 1. The vacuum blood collection tube for the high-hematocrit patient comprises a tube body (1), and is characterized in that a sealing component for sealing the tube body (1) is arranged at the top of the tube body (1), a drug delivery cabin (2) is arranged at the bottom of the tube body (1), a buoyancy cabin (3) filled with gas is arranged in the drug delivery cabin (2), a medicament cabin (4) filled with medicament is arranged below the buoyancy cabin (3), a cavity (5) is arranged at the bottom of the medicament cabin (4), a limiting table (6) is arranged on the inner side wall of the cavity (5), and a drug delivery tube (7) positioned below the limiting table (6) is arranged on the side wall of the cavity (5); sliding blocks (8) extending out of the drug delivery cabin (2) are slidably matched in the cavity (5), the side walls of the sliding blocks (8) are respectively provided with a "<" shaped drug delivery pipe (9) with the number and the positions corresponding to those of the drug delivery pipes (7), the side edges of the sliding blocks (8) are respectively provided with a limiting block (10) positioned above the "<" shaped drug delivery pipes, the vertical distance from the bottom of each limiting block (10) to the top of each limiting table (6) is equal to the vertical distance from the liquid outlet of each drug delivery pipe (7) to the liquid inlet of each "<" shaped drug delivery pipe (9), and the limiting tables (6) are respectively positioned in the motion track of each limiting block (10); the bottoms of the sliding block (8) and the medicine delivery cabin (2) are arc-shaped, and the bottoms of the sliding block (8) and the medicine delivery cabin (2) are attached to the bottom wall of the pipe body (1); The tube body (1) is a vacuum tube, the preset vacuum pressure in the tube body (1) corresponds to the specific target blood sampling amount, and a quantitative liquid anticoagulant is preset in the medicament cabin (4); When the target blood sampling amount is 2.0 mL, the vacuum pressure in the tube body (1) corresponds to the total volume of 2.2 mL, and the preset anticoagulant in the medicament cabin (4) is 0.2 mL, so that the ratio of blood to anticoagulant is 9:1; When the target blood sampling amount is 3.2 mL, the vacuum pressure in the tube body (1) corresponds to the total volume of 3.4 mL, and the preset anticoagulant in the medicament cabin (4) is 0.2 mL, so that the ratio of blood to the anticoagulant is about 1.6:1, and the blood sampling device is suitable for patients with hematocrit of > 55%.
  2. 2. The high hematocrit patient vacuum blood collection tube according to claim 1, wherein the sealing assembly includes a rubber plug (11) fixedly connected to an inner wall of a tube orifice of the tube body (1), a tube cap (12) is fixedly connected to an outer wall of the tube orifice of the tube body (1), and a through hole (13) is formed in a center of a top of the tube cap (12).
  3. 3. The vacuum blood collection tube for patients with high hematocrit according to claim 2, characterized in that the middle part of the drug delivery cabin (2) is cuboid, and side prisms of the drug delivery cabin are in sliding fit with the inner wall of the tube body (1).
  4. 4. A high hematocrit patient vacuum blood collection tube according to claim 3, characterised in that the top of the drug delivery capsule (2) is conical.
  5. 5. The high hematocrit patient vacuum blood collection tube of claim 4, wherein the drug compartment (4), the outer wall of the chamber (5) and the inner wall of the tube body (1) are all provided with a release coating (15).
  6. 6. The high hematocrit patient vacuum blood collection tube of claim 5, wherein the outer wall of the tube body (1) is provided with a label (16).
  7. 7. The high hematocrit patient vacuum blood collection tube of claim 6, wherein the sidewall of the tube cap (12) is provided with a plurality of ribs (17) along its axial direction.
  8. 8. The high hematocrit patient vacuum blood collection tube of claim 7, wherein the top of the chamber (5) is arched.
  9. 9. The high hematocrit patient vacuum blood collection tube according to claim 8, wherein a plurality of limiting posts (18) are provided on an end of the inner wall of the tube body (1) near the orifice.
  10. 10. The evacuated blood collection tube of a high hematocrit patient according to claim 9, characterized in that the end of the stopper posts (18) adjacent each other are each provided with a buffer layer (19).

Description

Vacuum blood collection tube for high hematocrit patient Technical Field The invention relates to the field of medical auxiliary instruments, in particular to a vacuum blood collection tube for a patient with high hematocrit. Background In the clinical examination field, the vacuum blood collection tube is used as a core carrier for blood sample collection, pretreatment and transportation, and the structural design and the function realization of the vacuum blood collection tube have direct influence on the quality of a sample and the reliability of a subsequent detection result. In the prior art, in order to meet the requirements of different detection projects, a vacuum blood collection tube is usually preset with functional agents such as an anticoagulant, a coagulant, a separation gel and the like according to the detection purpose so as to realize pretreatment targets such as anticoagulation, coagulation acceleration or component separation of a blood sample. In the production process of blood collection tubes, the medicaments are directly deposited at the bottom of the tube in a liquid or powder form to form a relatively fixed medicament distribution area, and the mixing effect of the medicaments and a blood sample depends on the subsequent manual operation intervention. It is worth noting that in the blood coagulation function test, the ratio of the blood collection amount to the anticoagulant has a significant influence on the test result. When the Hematocrit (HCT) of the patient is in the normal range, the ratio of the anticoagulant to the blood sampling amount of the blood coagulation specimen is 1:9, namely, the blood sampling tube is preset with 0.2 mL anticoagulant to correspondingly collect 2.0 mL blood. However, when the HCT of the patient is more than 55%, the plasma proportion in the blood is reduced, and if the blood is still collected according to the proportion of 1:9, the anticoagulant is relatively excessive, so that the coagulation time is prolonged in a pseudo manner, and the detection accuracy is affected. At this time, the blood collection amount is required to be adjusted to make the ratio of the anticoagulant to the blood reach about 1:15 (i.e. 1:1.6), namely the blood collection tube still contains 0.2 mL anticoagulant, but the blood collection amount is required to be increased to 3.2 mL so as to ensure that the ratio of the plasma to the anticoagulant is in a proper range. Taking a common "Kang Shifei" vacuum blood collection tube in the market as an example, the basic structure of the vacuum blood collection tube comprises a tube body for containing a blood sample, a rubber plug for sealing the top of the tube body, a plastic cover for wrapping the rubber plug to enhance the sealing performance, and a functional medicament which is arranged at the bottom of the tube in advance. The vacuum pressure of the existing common blood coagulation function blood collection tube usually corresponds to 2 mL blood collection amount, and a special blood collection tube with the vacuum pressure of 3.4 mL (corresponding to blood collection of 3.2 mL +anticoagulant of 0.2 mL) is required to be designed for high HCT patients (HCT > 55%), so as to adapt to the blood collection requirement of the patients. In clinical operation, after medical personnel puncture the rubber stopper through the blood drawing device and collect blood to the body, in order to make the medicament at the bottom of the tube fully contact and take place the reaction with blood sample, need to strictly carry out the manual shake to the heparin tube a plurality of times according to operation rule. So as to avoid the problems of local concentration unbalance of the medicament and blood caused by the medicament which is not effectively dispersed at the bottom of the tube after long-term standing, (for example, the anticoagulant can not uniformly inhibit the activity of the coagulation factors in the blood and can possibly cause local coagulation of the sample, the coagulation time can be prolonged if the coagulant can not activate the coagulation mechanism quickly), and the problems of insufficient coagulation, hemolysis, cell morphology change or detection index deviation of the blood sample can be caused under the conditions, thereby influencing the accuracy of the test result. However, the operation mode of manual shaking has significant limitation in practice that frequent manual operation increases the workload of medical staff, and particularly in high-flux blood sampling scenes (such as physical examination centers and large-scale hospital clinical departments), operators need to shake a large number of blood sampling tubes repeatedly and evenly, which is easy to cause operation fatigue and further reduces the working efficiency. Therefore, there is a need for a vacuum blood collection tube for high hematocrit patients that addresses the above-described problems. Disclosure of Invention In order to solve the problems