Fingertip blood sampling posture trainer

Abstract

The utility model discloses a fingertip blood sampling posture training device which comprises a finger support, a thumb fingerstall, an index finger fingerstall, a middle finger fingerstall and a fixing tube capable of fixing a sampled finger, the fixing tube is vertically arranged, the three fingerstalls are arranged around the axis of the fixing tube, and the projections of the three fingerstalls on the cross section of the fixing tube are located in three different areas respectively. The middle finger stall is located below the thumb stall and the forefinger stall, the thumb stall and the forefinger stall are oppositely arranged relative to the longitudinal section of the fixing pipe, three communicating ports are formed in the side wall of the fixing pipe, the three finger stalls are communicated with the interior of the fixing pipe through the communicating ports respectively, and flexible films are arranged on the three communicating ports; the intersection point of the extension directions of the thumb fingerstall and the index finger fingerstall is a working point, the finger rest can point to the working point in the radial direction of the fixing tube, the finger rest and the working point are arranged at an interval, and the finger rest is arranged on the side, away from the fixing tube, of the working point, and by means of the structure, an operator can be effectively helped to train blood sampling actions, and the accuracy of blood sampling operation is guaranteed.

Description

Technical Field

[0001] This application belongs to the technical field of medical devices, and specifically relates to a fingertip blood collection posture trainer. Background Art

[0002] Blood routine tests often collect blood from the fingertips for examination. The results of fingertip blood collection are basically the same as those of venous blood collection. Moreover, fingertip blood collection does not require invasion of veins and causes less harm to veins. Fingertip blood collection is widely used in various hospitals and is an essential skill for medical staff.

[0003] During the training of medical staff's blood collection skills, special training on fingertip blood collection will be carried out. Medical staff will practice fingertip blood collection operations on finger models or volunteers. When performing fingertip blood collection, medical staff need to use the thumb and index finger to pinch the fingertip, and the thumb and index finger of the other hand use a capillary tube to perform blood collection operations on the bleeding point. The pinching position of the finger to be collected by medical staff will affect the puncture point and the blood volume of the fingertip, thereby affecting the contact between the capillary tube and the bleeding point, and the capillary tube may not be able to effectively suck enough blood. Utility Model Content

[0004] In order to standardize the blood collection actions of medical staff and improve the blood collection effect, this application provides a fingertip blood collection posture trainer.

[0005] A fingertip blood collection posture trainer includes: a finger holder, a thumb finger sleeve, an index finger finger sleeve, a middle finger finger sleeve, and a fixing tube capable of fixing the finger to be collected. The fixing tube is arranged vertically, and the three finger sleeves are arranged around the axis of the fixing tube. Moreover, the projections of the three finger sleeves on the cross-section of the fixing tube are respectively located in three different regions. The middle finger finger sleeve is located below the thumb finger sleeve and the index finger finger sleeve. The thumb finger sleeve and the index finger finger sleeve are arranged oppositely with respect to the longitudinal section of the fixing tube. Three communication ports are provided on the side wall of the fixing tube, and the three finger sleeves are respectively communicated with the inside of the fixing tube through the communication ports. Flexible membranes are provided at the three communication ports; the intersection of the extending directions of the thumb finger sleeve and the index finger finger sleeve is the working point. The finger holder is arranged horizontally and points radially along the fixing tube towards the working point. The finger holder is spaced from the working point and is arranged on the side of the working point away from the fixing tube.

[0006] In an embodiment of this application, the finger holder includes a first finger holder and a second finger holder. The first finger holder is connected to the second finger holder through an adjusting mechanism. Under the action of the adjusting mechanism, the second finger holder can move radially relative to the first finger holder along the fixing tube to adjust the distance between the first finger holder and the second finger holder.

[0007] In an embodiment of this application, the adjusting mechanism is a scissor mechanism.

[0008] In an embodiment of the present application, the adjusting mechanism is a first guide rail. The first finger support is fixedly connected to the first guide rail, and the second finger support is slidably connected to the first guide rail.

[0009] In an embodiment of the present application, the fingertip blood sampling posture trainer further includes a frame body and a locking portion. The finger support is rotatably connected to the frame body through a rotating shaft and can rotate in the longitudinal section of the fixed tube to change the use angle of the finger support; the finger support is fixedly connected to the rotating shaft, the rotating shaft is rotatably connected to the frame body, the rotating shaft is provided with a first rotating portion, and the frame body is provided with a second rotating portion. When the locking portion locks the first rotating portion and the second rotating portion at the same time, the locking portion restricts the rotation of the finger support in the longitudinal section of the fixed tube so that the finger support is fixed at the use angle.

[0010] In an embodiment of the present application, the side wall of the fixed tube is provided with an insertion port. The extending direction of the insertion port is arranged along the axial direction of the fixed tube, and the orientation of the insertion port is the same as the direction in which the axis of the fixed tube points to the working point; the insertion port is arranged below the middle finger sleeve.

[0011] In an embodiment of the present application, the fingertip blood sampling posture trainer further includes a frame body and a palm support. The fixed tube is connected to the frame body, and the palm support is connected to the frame body through a height adjusting mechanism. The palm support can move in the axial direction of the fixed tube to change the distance between the palm support and the middle finger sleeve.

[0012] In an embodiment of the present application, the height adjusting mechanism includes an adjusting rod and a fixing pin; one end of the adjusting rod is connected with the palm support. Along the axial direction of the adjusting rod, the adjusting rod is provided with a plurality of first pin holes; the frame body is provided with an adjusting hole and a second pin hole communicated with the side wall of the adjusting hole. The outer diameter of the adjusting rod is equal to the inner diameter of the adjusting hole. The adjusting rod can be inserted into the adjusting hole, and the fixing pin can connect the second pin hole and one of the first pin holes to limit the movement of the adjusting rod in the adjusting hole.

[0013] In an embodiment of the present application, the side wall of the fixed tube is provided with an insertion port. A guiding bottom wall is provided at the connection between the insertion port and the inside of the fixed tube. Along the depth direction of the insertion port, the distance between the guiding bottom wall and the outlet of the fixed tube gradually decreases.

[0014] In an embodiment of the present application, the flexible film has elasticity and protrudes into the inside of the fixed tube.

[0015] The beneficial effects of the present application at least include:

[0016] 1. The finger to be sampled can be a volunteer's finger or a finger model. A fixing tube fixes the finger to be sampled and restricts its movement. The thumb, index finger, and middle finger of a medical staff member's one hand can respectively extend into the thumb finger sleeve, index finger sleeve, and middle finger sleeve, and pinch the finger to be sampled in the fixing tube through the communication port. This application uses three finger sleeves to help the medical staff determine the accuracy of the pinching position of the finger, help the medical staff form muscle memory, and a flexible membrane is provided at the communication port to prevent the finger to be sampled from getting stuck in the finger sleeve or prevent the medical staff's finger from getting stuck in the fixing tube;

[0017] 2. By setting the finger support horizontally and the extending direction of the finger support passing through the working point, the thumb and index finger of the medical staff member's other hand can pinch the capillary tube, and the middle finger is placed on the finger support to determine the position of the capillary tube relative to the finger to be sampled in the fixing tube with the help of the finger support, so as to ensure that the capillary tube can accurately reach the finger to be sampled. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of an exemplary embodiment of the present application;

[0019] Figure 2 is a schematic structural diagram of an exemplary embodiment of the index finger sleeve in the present application;

[0020] Figure 3 is a schematic structural diagram of an exemplary embodiment of the flexible membrane in the present application;

[0021] Figure 4 is a schematic structural diagram of an exemplary embodiment when the present application is in use;

[0022] Figure 5 is a schematic structural diagram of an exemplary embodiment of the first guide rail in the present application;

[0023] Figure 6 is a schematic structural diagram of an exemplary embodiment when the second finger support moves away from the first finger support by using a scissor mechanism in the present application;

[0024] Figure 7 is a schematic structural diagram of an exemplary embodiment when the second finger support approaches the first finger support by using a scissor mechanism in the present application;

[0025] Figure 8 is a schematic structural diagram of an exemplary embodiment of the insertion port in the present application;

[0026] Figure 9 is a schematic structural diagram of an exemplary embodiment of the guiding bottom wall in the present application;

[0027] Figure 10 is a schematic structural diagram of an exemplary embodiment of the rotating shaft in the present application;

[0028] Figure 11 It is a schematic structural diagram of a schematic implementation manner of the second rotating part in this application.

[0029] In the figure:

[0030] 101, thumb finger sleeve; 102, index finger sleeve; 103, middle finger sleeve;

[0031] 201, thumb film; 202, index finger film; 203, middle finger film;

[0032] 301, fixed tube; 302, insertion port; 303, guiding bottom wall;

[0033] 401, finger support; 402, first finger support; 403, second finger support; 404, first guide rail; 405, scissor mechanism;

[0034] 501, palm support; 502, adjusting rod; 503, first pin hole;

[0035] 601, frame body; 602, adjusting hole; 603, second pin hole; 604, fixing pin;

[0036] 701, left thumb; 702, left index finger; 703, left middle finger; 704, right thumb; 705, right index finger; 706, right middle finger; 707, finger to be collected; 708, capillary tube;

[0037] 801, rotating shaft; 802, first rotating part; 803, second rotating part; 804, locking bolt; 805, locking nut. Detailed implementation manners

[0038] For a clearer understanding of the technical features, objectives, and effects of this application, the detailed implementation manners of this application are now described with reference to the accompanying drawings. Components with the same reference numerals in the figures represent components with the same or similar structures but the same functions.

[0039] In this document, "schematic" means "serving as an example, instance, or illustration", and any illustration or implementation manner described as "schematic" in this document should not be construed as a more preferred or more advantageous technical solution.

[0040] To simplify the drawings, only the parts related to this application are schematically shown in each figure, and they do not represent the actual structure of the product. Additionally, for the sake of simplicity and easy understanding of the drawings, in some figures, only one of the components with the same structure or function is schematically shown, or only one of them is labeled.

[0041] Please refer to Figures 1 to 11 to understand this application.

[0042] See Figures 1 to 4 , a fingertip blood sampling posture trainer, which includes: a finger support 401, a thumb finger sleeve 101, an index finger finger sleeve 102, a middle finger finger sleeve 103, and a fixing tube 301 capable of fixing the finger to be sampled 707. The fixing tube 301 is vertically arranged. The three finger sleeves are arranged around the axis of the fixing tube 301, and the projections of the three finger sleeves on the cross-section of the fixing tube 301 are respectively located in three different regions. The middle finger finger sleeve 103 is located below the thumb finger sleeve 101 and the index finger finger sleeve 102. The thumb finger sleeve 101 and the index finger finger sleeve 102 are relatively arranged with respect to the longitudinal section of the fixing tube 301. Three communication ports are provided on the side wall of the fixing tube 301. The three finger sleeves are respectively communicated with the inside of the fixing tube 301 through the communication ports. Flexible membranes are provided at the three communication ports. See Figure 3 , a thumb thin film 201 is provided at the connection between the thumb finger sleeve 101 and the fixing tube 301, an index finger thin film 202 is provided at the connection between the index finger finger sleeve 102 and the fixing tube 301, and a middle finger thin film 203 is provided at the connection between the middle finger finger sleeve 103 and the fixing tube 301; The intersection of the extending directions of the thumb finger sleeve 101 and the index finger finger sleeve 102 is the working point. When the finger support 401 is horizontally arranged, it points to the working point along the radial direction of the fixing tube 301. The finger support 401 is spaced from the working point and is arranged on the side of the working point away from the fixing tube 301,

[0043] See Figure 4 , the situation when collecting blood with a capillary tube 708 in the right hand will be described here.

[0044] Figure 4 In, the left thumb 701, left index finger 702, and left middle finger 703 of the operator are respectively inserted into the thumb finger sleeve 101, index finger finger sleeve 102, and middle finger finger sleeve 103. The finger to be sampled 707 of the volunteer or the model is inserted into the fixing tube 301 through the insertion port 302. The operator's fingers can pinch the finger in the fixing tube 301 through the communication port. Since the relative positions of the thumb finger sleeve 101, index finger finger sleeve 102, and middle finger finger sleeve 103 and the fixing tube 301 are fixed, the operator can use the present application to train the pinching finger position. The flexible membrane can increase the friction between the operator and the finger to be sampled 707, facilitating the operator to find the correct blood sampling position. At the same time, it prevents the operator's finger from entering the fixing tube 301 through the communication port, or prevents the finger to be sampled 707 from entering the three finger sleeves through the communication port.

[0045] Meanwhile, the intersection point of the extension directions of the thumb finger sleeve 101 and the index finger sleeve 102 is the working point. When the finger rest 401 is horizontally arranged, it points radially along the fixed tube 301 towards the working point. The finger rest 401 is spaced from the working point and is arranged on the side of the working point away from the fixed tube 301. When the left index finger 702 and the left thumb 701 pinch the finger to be sampled 707, the right thumb 704 and the right index finger 705 pinch the capillary 708, and the right middle finger 706 can be placed on the finger rest 401. The finger rest 401 can provide a supporting force for the right hand, reducing the shaking of the right hand. And since the extension direction of the finger rest 401 can point to the working point, the finger rest 401 can provide a guiding function for the capillary 708, facilitating the operator to control the position of the capillary 708 relative to the finger to be sampled 707.

[0046] In an embodiment of the present application, the flexible film has elasticity, so that the opening position of the flexible film in the fixed tube 301 is relatively fixed, avoiding the random swinging of the flexible film, and preventing the situation that the shape of the flexible film changes under the action of gravity and other acting forces, ensuring that the contact position between the flexible film and the finger to be sampled 707 is fixed, and helping the operator to find the correct feel.

[0047] In an embodiment of the present application, the flexible film bulges towards the inside of the fixed tube 301. The flexible film will squeeze and extend into the finger to be sampled 707 in the fixed tube 301 and lean against the finger to be sampled 707. The operator's finger can enter the depression formed by the flexible film from the finger sleeve, and the flexible film helps the operator to determine the position of pinching the finger to be sampled 707.

[0048] See Figure 5 , in an embodiment of the present application, the finger rest 401 includes a first finger rest 402 and a second finger rest 403. The first finger rest 402 is connected to the second finger rest 403 through an adjusting mechanism. Under the action of the adjusting mechanism, the second finger rest 403 can move relative to the first finger rest 402 along the radial direction of the fixed tube 301 to adjust the distance between the first finger rest 402 and the second finger rest 403. The adjusting mechanism is a first guide rail 404. The first finger rest 402 is fixedly connected to the first guide rail 404, and the second finger rest 403 is slidably connected to the first guide rail 404. The first guide rail 404 is horizontally arranged. When the finger rest 401 is horizontally arranged, the extension direction of the first guide rail 404 is the same as the radial direction of the fixed tube 301. The second finger rest 403 can move towards the working point, and medical staff can make a horizontal linear motion with the help of the second finger rest 403 to adjust the relative position between the capillary 708 and the finger to be sampled 707, assisting the operator in training.

[0049] Of course, those skilled in the art to which the present application pertains can understand that the implementation manner of the adjusting mechanism in the present application can also be other ways. For example, in an embodiment of the present application, the adjusting mechanism is a scissor mechanism 405. See Figure 6 、 Figure 7, the second finger rest 403 can approach or move away from the first finger rest 402 along the radial direction of the fixed tube 301 through the scissor mechanism 405.

[0050] In an embodiment of the present application, the fingertip blood collection posture trainer further includes a frame body 601 and a locking part. The finger rest 401 is rotatably connected to the frame body 601 through a rotating shaft 801 and can rotate in the longitudinal section of the fixed tube 301 to change the use angle of the finger rest 401; the finger rest 401 is fixedly connected to the rotating shaft 801, the rotating shaft 801 is rotatably connected to the frame body 601, the rotating shaft 801 is provided with a first rotating part 802, and the frame body 601 is provided with a second rotating part 803. When the locking part locks the first rotating part 802 and the second rotating part 803 at the same time, the locking part restricts the rotation of the finger rest 401 in the longitudinal section of the fixed tube 301, so that the finger rest 401 is fixed at the use angle.

[0051] See Figure 1 , Figure 10 , Figure 11 , the first finger rest 402 is rotatably connected to the frame body 601 through a rotating shaft 801. The first finger rest 402 and the rotating shaft 801 are fixedly connected. The frame body 601 is provided with an insertion hole for the rotating shaft 801 to insert. The rotating shaft 801 can enter the insertion hole and rotate around its own axis. The rotating shaft 801 is rotatably connected to the frame body 601. The axial direction of the rotating shaft 801 is located in the cross section of the fixed tube 301. The first finger rest 402 can rotate around the axis of the rotating shaft 801; in Figure 10 , Figure 11 , the locking part is a locking nut 805 and a locking bolt 804. The first rotating part 802 has a through hole, and the second rotating part 803 has an arc-shaped hole. The depth directions of the through hole and the arc-shaped hole are the same as the axial direction of the rotating shaft 801. The locking bolt 804 passes through the first rotating part 802 and the second rotating part 803 and is connected to the locking nut 805. When the first finger rest 402 rotates around the axis of the rotating shaft 801, the locking bolt 804 moves in the extending direction of the arc-shaped hole of the second rotating part 803 until the first finger rest 402 reaches a suitable use angle. Use the locking nut 805 and the locking bolt 804 to lock the rotating shaft 801 and the frame body 601, and the rotating shaft 801 no longer rotates. Thus, the first finger rest 402 is fixed at a use angle, which is convenient for the operator's middle finger to be placed on the first finger rest 402 at a more comfortable angle, so as to facilitate the operator to practice the blood collection operation.

[0052] Of course, those skilled in the art to which this application pertains can understand that the rotating shaft 801 in this application can also be connected to the second finger rest 403 to achieve the rotation of the finger rest 401 in the longitudinal section of the fixed tube 301. It can also be that the first finger rest 402 and the second finger rest 403 are of an integral structure, and there is only one finger rest 401. The finger rest 401 is connected to the frame body 601 through the rotating shaft 801, so as to achieve the rotation of the finger rest 401 in the longitudinal section of the fixed tube 301. Of course, there are other ways to realize the rotational locking of the first rotating part 802 and the second rotating part 803. For example, the locking part is a locking pin. The second rotating part 803 of the frame body 601 is provided with a plurality of pin holes around the axis of the rotating shaft 801, and the first rotating part 802 of the rotating shaft 801 is provided with one pin hole. When the locking part connects the pin holes provided in the first rotating part 802 and the second rotating part 803, the rotation of the rotating shaft 801 can be restricted, thereby restricting the rotation of the finger rest 401.

[0053] See Figure 1 , Figure 4 , Figure 8 , in an embodiment of the present application, an insertion port 302 is provided on the side wall of the fixed tube 301. The extending direction of the insertion port 302 is arranged along the axial direction of the fixed tube 301, and the orientation of the insertion port 302 is the same as the direction of the axis of the fixed tube 301 pointing to the working point. The insertion port 302 is provided below the middle finger sleeve 103, so as to facilitate the blood collection finger 707 to extend into the fixed tube 301 through the insertion port 302, and the fingertip of the blood collection finger 707 extends out from the outlet of the fixed tube 301, and the operator can perform blood collection operations.

[0054] See Figure 9 , in an embodiment of the present application, an insertion port 302 is provided on the side wall of the fixed tube 301. A guiding bottom wall 303 is provided at the connection between the insertion port 302 and the interior of the fixed tube 301. Along the depth direction of the insertion port 302, the distance between the guiding bottom wall 303 and the outlet of the fixed tube 301 gradually decreases, so as to facilitate the blood collection finger 707 to reach the outlet of the fixed tube 301 through the insertion port 302 under the guiding action of the guiding bottom wall 303.

[0055] See Figure 4 , Figure 5 , Figure 8 , Figure 9, in an embodiment of the present application, the fingertip blood sampling posture trainer further includes a frame body 601 and a palm support 501. The fixed tube 301 is connected to the frame body 601, and the palm support 501 is connected to the frame body 601 through a height adjustment mechanism. The palm support 501 can move axially along the fixed tube 301 to change the distance between the palm support 501 and the middle finger sleeve 103. In an embodiment of the present application, the height adjustment mechanism includes an adjustment rod 502 and a fixing pin 604; along the axial direction of the adjustment rod 502, the adjustment rod 502 is provided with a plurality of first pin holes 503; the frame body 601 is provided with an adjustment hole 602 and a second pin hole 603 communicating with the side wall of the adjustment hole 602. The outer diameter of the adjustment rod 502 is equal to the inner diameter of the adjustment hole 602. One end of the adjustment rod 502 is connected to the palm support 501, and the other end of the adjustment rod 502 can be inserted into the adjustment hole 602, and the fixing pin 604 connects the second pin hole 603 and one of the first pin holes 503 to limit the movement of the adjustment rod 502 in the adjustment hole 602. The fixing pin 604 is connected to different first pin holes 503, so that the palm support 501 can have different heights relative to the frame body 601, thereby facilitating the insertion of the finger to be sampled 707 into the fixed tube 301. The palm support 501 provides support for the finger to be sampled 707, and by adjusting the height of the palm support 501 relative to the frame body 601, the palm support 501 can provide support for fingers to be sampled 707 of different sizes.

[0056] Those skilled in the art to which the present application pertains can understand that the height adjustment mechanism also has other methods. For example, the adjustment rod 502 is provided with threads, and the inner wall of the adjustment hole 602 is provided with threads that can be threadedly connected to the adjustment rod 502. The height of the palm support 501 relative to the frame body 601 is adjusted by rotating the adjustment rod 502. Of course, the height adjustment mechanism also has other implementation methods, which will not be elaborated here.

[0057] Of course, the relative positions of the various components in the present application can also be adaptively adjusted according to the situation of holding the capillary tube with the left hand and pinching the finger to be sampled with the right hand, which will not be elaborated here.

[0058] It should be understood that although this specification is described according to various embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0059] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present application, and they are not used to limit the protection scope of the present application. Any equivalent implementation or change made without departing from the technical spirit of the present application, such as the combination, division, or repetition of features, should be included in the protection scope of the present application.

Claims

1. A fingertip blood sampling posture training device, characterized in that: include: A finger rest, a thumb sleeve, an index finger sleeve, a middle finger sleeve and a fixing tube capable of fixing the finger to be picked, the fixing tube is arranged vertically, the three sleeves are arranged around the axis of the fixing tube, and the projections of the three sleeves on the cross section of the fixing tube are respectively located in three different areas, the middle finger sleeve is located below the thumb sleeve and the index finger sleeve, the thumb sleeve and the index finger sleeve are arranged opposite to each other with respect to the longitudinal section of the fixing tube, the side wall of the fixing tube is provided with three communication ports, the three sleeves are respectively connected with the interior of the fixing tube through the communication ports, and the three communication ports are provided with flexible membranes; The intersection of the extension directions of the thumb sleeve and the index finger sleeve is the working point. When the finger rest is arranged horizontally, the finger rest points to the working point along the radial direction of the fixed tube. The finger rest is arranged at a distance from the working point and is arranged on a side of the working point away from the fixed tube.

2. A fingertip blood sampling posture trainer according to claim 1, characterized in that: The finger rest includes a first finger rest and a second finger rest, wherein the first finger rest is connected to the second finger rest via an adjusting mechanism, and under the action of the adjusting mechanism, the second finger rest can move relative to the first finger rest along the radial direction of the fixed tube to adjust the distance between the first finger rest and the second finger rest.

3. A fingertip blood sampling posture training device according to claim 2, characterized in that: The adjusting mechanism is a scissor mechanism.

4. The fingertip blood sampling posture training device according to claim 2, characterized in that: The adjusting mechanism is a first guide rail, the first finger rest is fixedly connected to the first guide rail, and the second finger rest is slidably connected to the first guide rail.

5. The fingertip blood sampling posture training device according to claim 1, characterized in that: The fingertip blood sampling posture trainer also includes a frame and a locking part, the finger rest is rotatably connected to the frame via a rotating shaft and can rotate in the longitudinal section of the fixed tube to change the use angle of the finger rest; The finger rest is fixedly connected to a rotating shaft, and the rotating shaft is rotatably connected to a frame body. The rotating shaft is provided with a first rotating part, and the frame body is provided with a second rotating part. When the locking part simultaneously locks the first rotating part and the second rotating part, the locking part limits the rotation of the finger rest in the longitudinal section of the fixed tube so that the finger rest is fixed at the usage angle.

6. The fingertip blood sampling posture training device according to claim 1, characterized in that: The side wall of the fixed tube is provided with an insertion opening, the extension direction of the insertion opening is arranged along the axial direction of the fixed tube, and the orientation of the insertion opening is the same as the direction in which the axis of the fixed tube points to the working point; The insertion opening is arranged below the middle finger sleeve.

7. The fingertip blood sampling posture training device according to claim 6, characterized in that: The fingertip blood collection posture trainer also includes a frame and a palm rest. The fixed tube is connected to the frame. The palm rest is connected to the frame through a height adjustment mechanism. The palm rest can move in the axial direction of the fixed tube to change the distance between the palm rest and the middle finger cuff.

8. The fingertip blood sampling posture training device according to claim 7, characterized in that: The height adjustment mechanism comprises an adjustment rod and a fixing pin; One end of the adjusting rod is connected to the palm rest, and the adjusting rod is provided with a plurality of first pin holes along the axial direction of the adjusting rod; The frame is provided with an adjustment hole and a second pin hole connected to the side wall of the adjustment hole, the outer diameter of the adjustment rod is equal to the inner diameter of the adjustment hole, the adjustment rod can be inserted into the adjustment hole, and the fixing pin can connect the second pin hole and one of the first pin holes to limit the movement of the adjustment rod in the adjustment hole.

9. The fingertip blood sampling posture training device according to claim 1, characterized in that: The side wall of the fixed pipe is provided with an extension port, and a guide bottom wall is provided at the connection between the extension port and the interior of the fixed pipe. Along the depth direction of the extension port, the distance between the guide bottom wall and the outlet of the fixed pipe gradually decreases.

10. The fingertip blood sampling posture training device according to claim 1, characterized in that: The flexible film has elasticity, and the flexible film protrudes toward the inside of the fixing pipe.

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