Auxiliary device for separating coagulated blood clots of blood sample and use method of auxiliary device

Abstract

The invention discloses a blood sample coagulated blood clot separation auxiliary device which comprises a pipe body, an air pipe is arranged in the pipe body, the bottom of the air pipe extends downwards and penetrates out of the side face of the pipe body, and a valve is arranged in the air pipe; the expansion body is connected to the bottom of the air pipe; the air inflation part is connected to the top of the air pipe, and air vents are formed in the top and the bottom of the air inflation part. After the expansion body of the device expands, the expansion body basically makes contact with the inner wall of the blood collection tube, the contact area between the expansion body and a coagulated blood clot is increased, the coagulated blood clot can be supported, the gap between the expansion body and the inner wall of the blood collection tube is small, the coagulated blood clot cannot slide off from the gap, and the coagulated blood clot can be separated from the blood collection tube at a time; secondly, the coagulated blood clots are separated from the blood collection tube at a time, the situation that the coagulated blood clots are split into coagulated blood fragments is reduced, the coagulated blood fragments are prevented from being mixed with a blood sample, and the accuracy of blood sample assay is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of medical auxiliary tools, and in particular to a blood sample coagulation clot separation auxiliary device and a method of using the same. Background Art

[0002] During the blood collection process, blood collection tubes (containing anticoagulants) are usually used for sampling and post-testing. However, due to some human factors or diseases, small clots appear in the collected blood, which is often caused by insufficient anticoagulant dosage, poor puncture, uneven mixing after blood collection, etc. When blood samples clot, it is easy to cause inaccurate test results, especially small clots that are not easy to see with the naked eye, which leads to deviations in the results.

[0003] The existing method of separating clots in blood samples is to insert one end of a bamboo stick into the blood collection tube, and use the fiber of the bamboo stick to fix the clot and pick out the clot. However, this method has obvious defects. Since the contact surface between the bamboo stick and the clot is relatively small, it is difficult to pick out some small clots. Therefore, it is necessary to repeat the operation many times, which may damage blood cells and cause hemolysis, and the accuracy of blood sample detection cannot be guaranteed. Summary of the invention

[0004] The technical problem to be solved by the present application is to provide a blood sample coagulated blood clot separation auxiliary device and a use method thereof, which can quickly separate the coagulated blood clot from the blood collection tube at one time.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] A blood sample coagulation clot separation auxiliary device, comprising:

[0007] The tube body used for lifting and lowering in the blood collection tube has an air tube inside the tube body for inflating and deflating gas. The bottom of the air tube extends downward and passes through the side of the tube body. A valve is provided inside the air tube to control the flow of gas.

[0008] The expander is used to lift the coagulated blood clot, which is connected to the bottom of the trachea;

[0009] The inflatable part is connected to the top of the trachea and is used to inflate the expansion body. The top and bottom of the inflatable part are both provided with vents.

[0010] According to a development of the invention, it is advantageously provided that the side wall of the bottom of the tubular body is provided with a fixing cover.

[0011] Furthermore, the expansion body is arranged in the fixed cover, which can reduce the downward swinging of the expansion body during the upward movement.

[0012] According to the present invention, it is further provided that the expansion body is an airbag.

[0013] According to an extended solution of the present invention, it is advantageously provided that the inflatable portion is a cylindrical bellows structure. The inflatable portion can be compressed and deformed so that the air inside the inflatable portion is transferred into the expansion body.

[0014] In order to reduce displacement of the tube body during practical use, in some embodiments, a fixing ring is further included, an inner fixing ring is provided inside the fixing ring, and the tube body is disposed in the inner fixing ring.

[0015] Furthermore, a countersunk hole is provided at the bottom of the fixing collar, and the fixing collar is fixed at the tube mouth of the blood collection tube through the countersunk hole.

[0016] The method for using the blood sample coagulation clot separation auxiliary device comprises the following steps:

[0017] Step 1: Insert the tube into the blood collection tube, and place the fixed collar on the tube opening of the blood collection tube;

[0018] Step 2: Move the tube body downward to the bottom of the blood collection tube, press the vent on the top of the inflation part with your finger to close it, and press the inflation part to shrink it, so that the air inside the inflation part enters the expansion body through the valve of the trachea, and then leave the vent with your finger, the inflation part returns to its original position, and continue the action of this step to make the expansion body swell;

[0019] Step 3: The expansion body lifts up the coagulated blood clot, and then pulls up the tube body. The expansion body and the coagulated blood clot move upward. When the expansion body contacts the bottom of the fixed collar, the tube body is pulled up continuously. The fixed collar separates from the tube mouth of the blood collection tube along with the tube body and the coagulated blood clot.

[0020] Compared with the prior art, the present application achieves at least the following beneficial effects: after the expansion body of the device expands, it basically contacts the inner wall of the blood collection tube, the expansion body increases the contact area with the coagulated blood clot, and can lift the coagulated blood clot, the gap between the expansion body and the inner wall of the blood collection tube is small, the coagulated blood clot will not slip through these gaps, and the coagulated blood clot can be separated from the blood collection tube at one time; secondly, the coagulated blood clot is separated from the blood collection tube at one time, and the situation of the coagulated blood clot splitting into coagulated blood fragments is reduced, which avoids mixing with the blood sample and ensures the accuracy of the blood sample test. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] One or more embodiments of the present application will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0022] Figure 1 A three-dimensional perspective view of a blood sample coagulation clot separation auxiliary device according to one embodiment of the present application;

[0023] Figure 2 for Figure 1 A side cross-sectional view of an embodiment;

[0024] Figure 3 for Figure 2 The local schematic diagram of the A in the middle;

[0025] Figure 4 for Figure 2 The local schematic diagram of point B in the middle;

[0026] Figure 5 A bottom perspective view of the fixing ring of the present application;

[0027] Figure 6 It is a three-dimensional schematic diagram of the valve of the present application in a working state.

[0028] The numbers in the figure are: 1, blood collection tube; 2, fixing ring; 21, inner fixing ring; 22, countersunk hole; 23, rubber ring; 3, inflation part; 4, tube body; 41, first air vent; 42, second air vent; 43, outer retaining ring; 44, inner retaining ring; 5, expansion body; 6, trachea; 61, valve; 7, fixing cover. DETAILED DESCRIPTION

[0029] The present application will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. However, it should be understood that the present application can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided here to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0030] In the description of the present application, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present application.

[0031] The inventors have conducted a careful analysis and found that the main reason for the above problem is that there is no tool that can separate the coagulated blood clots in the blood collection tube. The coagulated blood clots are characterized by being gel-like and having a smooth outer wall. After being placed in a sol-like blood sample, the outer surface will be wrapped with a layer of blood sample, making the outer surface smoother. The existing method for separating the coagulated blood clots in the blood sample is to use the end of the cotton swab that is not wrapped with cotton to extend into the blood collection tube, so that the bottom of the cotton swab is against the inner wall of the blood collection tube to form an inclined bottom, so that the coagulated blood clot is located between the inclined cotton swab and the inner wall of the blood collection tube, and the cotton swab is pulled out at a uniform speed to drive the coagulated blood clot to move toward the blood collection tube port. Since the coagulated blood clot is lubricated on the outside, and the texture is soft and has a certain elasticity (such as jelly), the contact area between the cotton swab and the coagulated blood clot is small, and the gap between the cotton swab and the inside of the blood collection tube is large, the coagulated blood clot is very easy to slide from the two sides of the cotton swab and fall back to the bottom of the blood collection tube. Therefore, it is often necessary to use the cotton swab to extend into the blood collection tube for many times to squeeze the coagulated blood clot and drive the coagulated blood clot to move toward the blood collection tube port. After repeating the above operation for many times, the cotton swab will have a small contact area with the coagulated blood clot and cut it into more small coagulated blood fragments. After these coagulated blood fragments are mixed with the blood sample, there is no way to separate them from the blood sample, and the accuracy of the blood sample test cannot be guaranteed. In addition, the use of tweezers may also cause the above-mentioned slippage and the crushing of the coagulated blood clot into small coagulated blood fragments during clamping.

[0032] Based on the above analysis, the inventors have improved the structure for separating coagulated blood clots.

[0033] This application provides an embodiment of a blood sample coagulation clot separation auxiliary device. For details, please refer to Figure 1-6 .

[0034] A blood sample coagulation clot separation auxiliary device, the device is used in conjunction with a blood collection tube 1, the device includes a tube body 4 made of hard plastic for lifting and lowering in the blood collection tube 1, the diameter of the tube body 4 can refer to the diameter of a cotton swab; an air tube 6 for filling and discharging air is provided inside the tube body 4, a through hole is provided on the bottom side of the tube body 4, the bottom of the air tube 6 extends downward and passes through the through hole on the side of the tube body 4, and a valve 61 for controlling the on and off of gas is provided inside the air tube 6;

[0035] The expansion body 5 can be inflated and is roughly spherical after inflation, and is used to lift the coagulated blood clot, and is connected to the bottom of the trachea 6;

[0036] The inflatable part 3 is connected to the top of the trachea 6 and is used to inflate the expansion body 5. Ventilations are provided at the top and bottom of the inflatable part 3. The top one is a first vent 41 and the bottom one is a second vent 42.

[0037] A fixed cover 7 is adhered to the side wall at the bottom of the tube body 4. The fixed cover 7 is bowl-shaped, and its thickness gradually becomes thicker toward the center. It is made of rubber material, and the expansion body 5 is arranged in the fixed cover 7. In this embodiment, an opening is provided on the right side of the expansion body 5, and the opening is sealed and connected to the inner wall of the fixed cover 7, wherein the bottom of the trachea 6 passes through the center of the fixed cover 7, and the opening is connected to the bottom of the trachea 6. After the expansion body 5 is inflated, because the closer the fixed cover 7 is to the center, the thicker it is, the fixed cover 7 can reduce the downward swing of the expansion body 5 during the upward movement, ensuring that the expansion body 5 stably holds the coagulated blood clot.

[0038] Based on the above, the expansion body 5 is preferably an air bag made of rubber.

[0039] The inflatable part 3 is used to transport gas to the expansion body 5 through the air pipe 6, so that the expansion body 5 is inflated. The inflatable part 3 is a cylindrical bellows structure. The inflatable part 3 is elastic and can be compressed and deformed so that the air inside it is transferred to the expansion body 5. At the bottom of the inflatable part 3, an outer retaining ring 43 and an inner retaining ring 44 are provided, and a bayonet is formed between the outer retaining ring 43 and the inner retaining ring 44. A hole is opened in the middle of the inner retaining ring 44 and is connected to the second vent 42. During installation, the port at the top of the tube body 4 is clamped between the outer retaining ring 43 and the inner retaining ring 44, and the air pipe 6 is clamped in the hole of the inner retaining ring 44 and is connected to the second vent 42.

[0040] In order to reduce displacement of the tube body 4 during practical use, the present embodiment further comprises a cylindrical fixing collar 2 , the interior of which is connected with an inner fixing ring 21 , and the tube body 4 can be movably placed in the inner fixing ring 21 .

[0041] A countersunk hole 22 is formed at the bottom of the fixing collar 2 , and the fixing collar 2 can be detachably clamped at the tube opening of the blood collection tube 1 through the countersunk hole 22 .

[0042] In order to prevent the fixed collar 2 from rotating, an annular groove is provided on the inner wall of the counterbore 22, and a rubber ring 23 is provided in the annular groove. After the counterbore 22 is clamped at the tube mouth of the blood collection tube 1, the rubber ring 23 is squeezed and deformed to increase the friction force to prevent the fixed collar 2 from rotating.

[0043] The valve 61 used in this embodiment is a circular rubber sheet. Figure 3 and Figure 6 As shown, a cross-shaped incision is opened in the middle of the valve 61. When the inflatable part 3 is inflated, as shown in FIG. Figure 6 As shown, the arrow in the accompanying drawing indicates the direction of gas entry. At this time, the incision will open downward, and the gas will enter the expansion body 5 through the trachea 6. When the inflation portion 3 is not inflated, the cross-shaped incision is closed to form a closed opening.

[0044] This embodiment provides a method for using a blood sample coagulation clot separation auxiliary device, comprising the following steps:

[0045] Step 1: Insert the tube body 4 into the blood collection tube 1, and clamp it at the tube mouth of the blood collection tube 1 through the countersunk hole 22 of the fixed collar 2. At this time, the fixed collar 2 is fixed by increasing the friction force through the squeezing of the rubber ring 23 inside the countersunk hole 22. If there is no force exceeding the friction force, the fixed collar 2 cannot rotate or fall out from the tube mouth;

[0046] Step 2: The laboratory technician holds the tube body 4 and moves it downward to the bottom of the blood collection tube 1. At this time, the tube body 4 is limited by the inner wall of the blood collection tube 1 and stops moving downward. The laboratory technician uses his thumb or index finger to press the vent (i.e., the first vent 41) at the top of the inflation part 3 to close the bellows-shaped inflation part 3, and presses the inflation part 3 to shrink it downward, so that the air inside the inflation part 3 enters the expansion body 5 through the valve 61 of the trachea 6. The finger leaves the vent (i.e., the first vent 41), the inflation part 3 is reset, and the gas in the trachea 6 is blocked by the valve 61 and cannot flow in the reverse direction; according to the aforementioned actions of this step, continue to press the inflation part 2 to 3 times to make the expansion body 5 fully inflate. During the expansion of the expansion body 5, it will occupy the space at the bottom of the coagulated blood clot, thereby lifting the expansion body 5 until the coagulated blood clot is located at the top of the expansion body 5;

[0047] Step three: the expansion body 5 lifts up the coagulated blood clot, then the tube body 4 is held and pulled up, the expansion body 5 and the coagulated blood clot move upward, and the remaining sol-like blood sample flows out from the gap. Since the expansion body 5 is almost in contact with the inner wall of the blood collection tube 1, only some gaps are left. When the expansion body 5 and the coagulated blood clot move upward, the space below the expansion body 5 and the inner wall of the blood collection tube 1 is theoretically in a negative pressure state. If the blood sample blocks these gaps, it will be drawn to the bottom of the blood collection tube 1 by negative pressure. If part of the blood sample has not returned to the blood collection tube 1 at this time, the blood collection tube 1 can be appropriately tilted so that the blood sample flows to the gap and is drawn back by negative pressure; when the expansion body 5 contacts the bottom of the fixed collar 2, the tube body 4 is continued to be pulled up, and the fixed collar 2 is separated from the tube mouth of the blood collection tube 1 along with the tube body 4 and the coagulated blood clot.

[0048] Since the coagulated blood clot is in gel form, the fixing ring 2 can also prevent the coagulated blood clot from falling directly after being separated from the blood collection tube 1, thereby playing the role of receiving the coagulated blood clot.

[0049] After use, the expansion body 5 is pressed, and the gas in the expansion body 5 flows out from the valve 61 through the trachea 6. The expansion body 5 shrinks in the fixed cover 7. After the inflation part 3 is removed, all parts that have come into contact with the blood are cleaned, disinfected, and dried for next use.

[0050] It should be understood that all the above embodiments are illustrative rather than restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of the present application should be within the protection scope of the present application.

Claims

1. A blood sample coagulation clot separation auxiliary device, characterized in that: include: The tube body has a trachea inside, the bottom of the trachea extends downward and passes through the side of the tube body, and a valve is provided inside the trachea; An expansion body connected to the bottom of the trachea; The inflatable part is connected to the top of the trachea, and vents are provided at the top and bottom of the inflatable part.

2. The device according to claim 1, characterized in that A fixing cover is arranged on the side wall of the bottom of the tube body.

3. The device according to claim 2, characterized in that The expansion body is arranged in the fixing cover.

4. The device according to claim 3, characterized in that The expansion body is an air bag.

5. The device according to claim 1, characterized in that The inflatable part is a cylindrical bellows structure.

6. The device according to claim 1, characterized in that It also includes a fixing collar, an inner fixing ring is arranged inside the fixing collar, and the tube body is arranged in the inner fixing ring.

7. The device according to claim 6, characterized in that A countersunk hole is formed at the bottom of the fixing collar.

8. The device according to claim 7, characterized in that The inner wall of the countersunk hole is provided with an annular groove, and a rubber ring is arranged in the annular groove.

9. A method for using the blood sample coagulation clot separation auxiliary device according to any one of claims 1 to 8, comprising the following steps: Step 1: Insert the tube into the blood collection tube, and place the fixed collar on the tube opening of the blood collection tube; Step 2: Move the tube body downward to the bottom of the blood collection tube, press the vent on the top of the inflation part with your finger to close it, and press the inflation part to shrink it, so that the air inside the inflation part enters the expansion body through the valve of the trachea, and then leave the vent with your finger, the inflation part returns to its original position, and continue the action of this step to make the expansion body swell; Step 3: The expansion body lifts up the coagulated blood clot, and then pulls up the tube body. The expansion body and the coagulated blood clot move upward. When the expansion body contacts the bottom of the fixed collar, the tube body is pulled up continuously. The fixed collar separates from the tube mouth of the blood collection tube along with the tube body and the coagulated blood clot.

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