Intravenous infusion nursing teaching puncture instrument

Abstract

The utility model belongs to the technical field of teaching aids, and particularly relates to a puncture instrument for venous transfusion nursing teaching, which comprises a hollow flexible outer tube with two open ends and a hollow simulation blood vessel with two open ends, an inner column is movably inserted into the flexible outer tube, and adjusting rods penetrate through two ends of the inner column. The adjusting rod is movably connected with the inner column, a plurality of first fixing pieces are arranged on the adjusting rod, a plurality of concave grooves used for the first fixing pieces to move are formed in the outer wall of the inner column, one end of each first fixing piece extends to the outside of the corresponding concave groove, and the other end of each first fixing piece extends to the outside of the corresponding concave groove. By fixing the simulated blood vessel on the first fixing piece and the second fixing piece, when the curve and straight direction of the simulated blood vessel needs to be adjusted along with the depth of teaching, the adjusting rod is rotated to drive the first fixing piece to move, so that the simulated blood vessel is in a bent state, the difficulty of venous transfusion paracentesis is increased, and the teaching efficiency is improved. And the level of intravenous infusion paracentesis of students is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of teaching tools, and in particular relates to a puncture instrument for intravenous infusion nursing teaching. Background Art

[0002] Venipuncture is a method of aseptic operation, in which a venipuncture needle is inserted into a superficial vein. It is used for intravenous infusion or blood testing in clinical practice to achieve the purpose of treating diseases. Therefore, venipuncture is an essential learning project for medical students.

[0003] At present, when medical students learn venipuncture, they generally combine theory with practice. In theory, they master theoretical knowledge through books, multimedia teaching systems, etc., and in practice, they generally use venipuncture instruments to train venipuncture, such as venipuncture models, etc., and the venipuncture models in the prior art are generally used by setting up simulated blood vessels in flexible tubes that simulate skin, and then during teaching, by injecting liquid into the simulated blood vessels, and finally inserting the intravenous infusion needle into the simulated blood vessels by puncturing the simulated skin, so as to achieve the purpose of teaching and training. However, during use, the tortuous and straight directions of the simulated blood vessels are relatively single, so that students will not make much progress after multiple trainings. Therefore, when entering clinical work, when faced with various tortuous and straight blood vessels, the puncture technique is still not proficient. Therefore, in response to the above problems, we propose an intravenous infusion nursing teaching puncture instrument. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide an intravenous infusion nursing teaching puncture instrument, which can adjust the tortuosity of the simulated blood vessel according to the students' learning progress during the intravenous infusion puncture, increase the difficulty of the intravenous infusion puncture, and improve the students' intravenous infusion puncture level.

[0005] To achieve the above objectives, the technical solution adopted by the utility model is: an intravenous infusion nursing teaching puncture instrument, comprising a hollow flexible outer tube with openings at both ends and a hollow simulated blood vessel with openings at both ends, an inner column movably inserted inside the flexible outer tube, an adjusting rod passing through both ends of the inner column, the adjusting rod and the inner column movably connected, a plurality of first fixings are provided on the adjusting rod, a plurality of recessed grooves respectively used for the movement of the plurality of first fixings are provided on the outer wall of the inner column, one end of the first fixing extends to the outside of the recessed groove, a plurality of second fixings are provided on the inner column, the plurality of first fixings and the plurality of second fixings are spaced apart and are used to connect the simulated blood vessel between the flexible outer tube and the inner column.

[0006] The beneficial effect of the utility model is that by fixing the simulated blood vessel on the first fixing piece and the second fixing piece, when the curvature of the simulated blood vessel needs to be adjusted as the teaching progresses, the adjusting rod is rotated to drive the first fixing piece to move, so that the simulated blood vessel is bent, the difficulty of intravenous infusion puncture is increased, and the level of students' intravenous infusion puncture is improved.

[0007] In order to facilitate the adjustment of the curvature of the simulated blood vessels;

[0008] As a further improvement of the above technical solution: the first fixing member includes a base column 1 connected to the adjusting rod, a clamping ring 1 connected to the end of the base column 1 away from the adjusting rod, and a clamping bead 1 adapted to the clamping ring 1; the second fixing member includes a base column 2 connected to the inner column, a clamping ring 2 connected to the end of the base column 2 away from the inner column, and a clamping bead 2 adapted to the clamping ring 2; the clamping bead 1 and the clamping bead 2 are both connected to the bottom of the simulated blood vessel.

[0009] The beneficial effects of the present improvement are as follows: the simulated blood vessel is fixed between the flexible outer tube and the inner column by the first fixing member and the second fixing member to prevent the simulated blood vessel from sliding randomly; when the straightness or curvature of the simulated blood vessel needs to be adjusted, the movable adjustment rod drives the first fixing member to move its position, while the second fixing member is fixed in position, so that the first fixing member can easily drive the simulated blood vessel to bend and change the straightness or curvature of the simulated blood vessel; and by respectively setting the clamping bead 1 and the clamping bead 2 to the clamping ring 1 and the clamping ring 2, the simulated blood vessel can be detachable, which facilitates the replacement of the simulated blood vessel.

[0010] To facilitate the management of simulated blood vessels;

[0011] As a further improvement of the above technical solution: the two ends of the simulated blood vessel are movably passed through the two ends of the inner column respectively, the simulated blood vessel is provided with a fixing convex ring, and the inner column is provided with a fixing groove matched with the fixing convex ring.

[0012] The beneficial effect of this improvement is that the two ends of the simulated blood vessel are respectively passed through the two ends of the inner column, so that during training, liquid can be injected into the simulated blood vessel to improve the authenticity of the simulated blood vessel. The other simulated blood vessel is clamped in the fixed groove by a fixed clamp ring, which is convenient for fixing the simulated blood vessel and preventing the two ends of the simulated blood vessel from entering the recessed groove too much, affecting the training effect of students.

[0013] In order to fix the flexible outer tube to the inner column;

[0014] As a further improvement of the above technical solution: both ends of the flexible outer tube are connected with fixed sleeves, and the outer walls of both ends of the inner column are respectively threadedly connected with the inner walls of the two fixed sleeves.

[0015] The beneficial effect of this improvement is that the two ends of the inner column are threadedly connected to the fixed sleeve to prevent the inner column from moving in the flexible outer tube during intravenous infusion puncture, causing the blood vessel position to shake and affecting the accuracy of students' needle insertion.

[0016] In order to fix the adjusting rod;

[0017] As a further improvement of the above technical solution: a push rod for fixing the adjusting rod is threadedly connected on the inner column.

[0018] The beneficial effect of this improvement is that when the state of the simulated blood vessel needs to be fixed, the push rod can be rotated toward the inside of the inner column. At this time, one end of the push rod is against the adjustment rod to prevent the adjustment rod from moving. When the straightness of the simulated blood vessel needs to be adjusted, the push rod can be rotated out to release the resistance to the adjustment rod.

[0019] In order to occlude the simulated blood vessels;

[0020] As a further improvement of the above technical solution: fixing clamps are movably installed at both ends of the simulated blood vessel.

[0021] The beneficial effects of this improvement are as follows: in order to increase the realism of the simulated blood vessel, during use, the two ends of the simulated blood vessel can be connected to an infusion device, and then liquid can be injected into the simulated blood vessel. When the infusion needle is inserted into the blood vessel, the liquid will enter the inside of the infusion needle, simulating the real feeling of blood returning from the infusion needle. In addition, the filling degree of the simulated blood vessel can be adjusted by adjusting the amount of liquid injected into the simulated blood vessel. The greater the filling degree, the greater the pressure in the simulated blood vessel, and the smaller the filling degree, the smaller the pressure in the simulated blood vessel, thereby achieving more aspects of adjustment of the simulated blood vessel, and then the simulated blood vessel is clamped with a fixing clamp to prevent the injected liquid from flowing out.

[0022] To increase the complexity of the simulated blood vessels;

[0023] As a further improvement of the above technical solution: there are multiple adjusting rods and simulated blood vessels, and the multiple adjusting rods and simulated blood vessels are equidistantly arranged around the central axis of the inner column.

[0024] The beneficial effect of this improvement is that the provision of multiple simulated blood vessels can form a more complex vascular system inside the flexible outer tube, increasing the challenge of intravenous infusion puncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional structural schematic diagram of the prior art provided by the utility model;

[0026] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0027] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0028] Figure 4 It is a partial structural schematic diagram of the utility model;

[0029] Figure 5 For this utility model Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0030] Figure 6 For this utility model Figure 4 Schematic diagram of the enlarged structure of B.

[0031] In the figure: 1. flexible outer tube; 2. simulated blood vessel; 3. inner column; 4. adjusting rod; 5. first fixing piece; 501. bottom column one; 502. clamping ring one; 503. clamping bead one; 6. recessed groove; 7. second fixing piece; 701. bottom column two; 702. clamping ring two; 703. clamping bead two; 8. fixing convex ring; 9. fixing groove; 10. fixing sleeve; 11. push rod; 12. fixing clamp. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0033] like Figure 1 The prior art shown in the figure performs simulated puncture by inserting an infusion puncture needle into the flexible outer tube 1 into a simulated blood vessel 2 with multiple fixed curvatures and straightnesses inside the flexible outer tube 1. Although this can train students' puncture techniques, the curvature and straightness of the simulated blood vessel 2 are relatively fixed, which results in students being more adapted to intravenous infusion puncture of simple blood vessels after entering clinical work, while being less skilled in slightly more complex blood vessels and requiring them to adapt slowly, causing patients to feel more uncomfortable during intravenous puncture.

[0034] Specifically, Figure 2-6As shown, an intravenous infusion nursing teaching puncture instrument comprises a hollow flexible outer tube 1 with openings at both ends and a hollow simulated blood vessel 2 with openings at both ends, an inner column 3 is movably inserted inside the flexible outer tube 1, and adjusting rods 4 are passed through the two ends of the inner column 3, and the adjusting rod 4 is movably connected to the inner column 3, and a plurality of first fixing members 5 are arranged on the adjusting rod 4, and a plurality of recessed grooves 6 for the movement of the plurality of first fixing members 5 are respectively opened on the outer wall of the inner column 3, and one end of the first fixing member 5 extends to the outside of the recessed groove 6, and a plurality of second fixing members 7 are arranged on the inner column 3, and the plurality of first fixing members 5 and the plurality of second fixing members 7 are spaced apart and used to connect the simulated blood vessel 2 between the flexible outer tube 1 and the inner column 3, wherein the flexible outer tube 1 and the simulated blood vessel 2 are made of elastic materials such as rubber and silicone, and during the teaching and training process of students, as As the teaching progresses, students can adjust the difficulty of puncture according to their own learning progress. By rotating or sliding the adjusting rod 4, the adjusting rod 4 drives the first fixing part 5 to move its position in the recessed groove 6, while the second fixing part 7 is fixed in position, so that the simulated blood vessel 2 is deformed to form a certain degree of curvature, and the recessed groove 6 is larger than the width of the first fixing part 5. The opening of the recessed groove 6 can be set to have a length greater than the length of the first fixing part 5, and the curvature of the opening is between the width of the set first fixing part 5 and the curvature generated around the inner column 3 after the maximum deformation of the simulated blood vessel 2 between the first fixing part 5 and the second fixing part 7. Then, the simulated blood vessel 2 after bending is trained in intravenous puncture. The position of the bent blood vessel is not fixed, the complexity is high, and the difficulty of successful puncture is high, which can improve the level of students' intravenous infusion puncture.

[0035] Preferably, the first fixing member 5 includes a bottom column 501 connected to the adjusting rod 4, a clamping ring 502 connected to the end of the bottom column 501 away from the adjusting rod 4, and a clamping bead 503 adapted to the clamping ring 502, and the second fixing member 7 includes a bottom column 701 connected to the inner column 3, a clamping ring 702 connected to the end of the bottom column 701 away from the inner column 3, and a clamping bead 703 adapted to the clamping ring 702, and the clamping bead 503 and the clamping bead 703 are both connected to the bottom of the simulated blood vessel 2, wherein the clamping bead 503 and the clamping bead 703 can be made of elastic materials such as rubber and silicone. The simulated blood vessel 2 with multiple clamping beads 1 503 and clamping beads 2 703 is fixed by clamping the clamping beads 1 503 and the clamping beads 2 703 on the clamping ring 1 502 and the clamping ring 2 702 respectively. Then, when there are many pinholes on the simulated blood vessel 2 or the elasticity of the simulated blood vessel 2 deteriorates, the simulated blood vessel 2 can be replaced by separating the clamping beads 1 503 and the clamping beads 2 703 from the clamping ring 1 502 and the clamping ring 2 702 respectively. When in use, the height of the first fixing piece 5 is the same as the height of the second fixing piece 7, so that the overall blood vessel is smoother and closer to the state of a real blood vessel.

[0036] Preferably, the two ends of the simulated blood vessel 2 are respectively movable and penetrate the two ends of the inner column 3, and the simulated blood vessel 2 is provided with a fixing convex ring 8, and the inner column 3 is provided with a fixing groove 9 adapted to the fixing convex ring 8, wherein the fixing convex ring 8 can be made of a material such as plastic with a certain hardness and can undergo a certain deformation. When the simulated blood vessel 2 is in use, the straight and curved direction of the simulated blood vessel 2 is adjusted by rotating the adjusting rod 4. At this time, if the two ends of the simulated blood vessel 2 inside the flexible outer tube 1 are connected to the first fixing member 5, when the first fixing member 5 drives the simulated blood vessel 2 to move, the simulated blood vessel 2 will drive its own two ends into the recessed groove 6, thereby causing the simulated blood vessel 2 to be chaotic in the recessed groove 6. Therefore, the two ends of the simulated blood vessel 2 need to be fixed. Therefore, the exposed two ends of the simulated blood vessel 2 can be pulled to make the fixing convex ring 8 fit into the inside of the fixing groove 9, thereby increasing the fixation of the simulated blood vessel 2.

[0037] Preferably, both ends of the flexible outer tube 1 are connected with a fixing sleeve 10, and the outer walls of the two ends of the inner column 3 are respectively threadedly connected to the inner walls of the two fixing sleeves 10, and the two ends of the inner column 3 are threadedly connected to the fixing sleeves 10 to prevent the inner column 3 from moving in the flexible outer tube 1 during intravenous infusion puncture, causing the blood vessel position to shake and affecting the accuracy of students' needle insertion.

[0038] Preferably, the inner column 3 is threadedly connected with a push rod 11 for fixing the adjusting rod 4. When the state of the simulated blood vessel 2 needs to be fixed, the push rod 11 can be rotated toward the inside of the inner column 3. At this time, one end of the push rod 11 is against the adjusting rod 4 to prevent the adjusting rod 4 from moving. When the curvature of the simulated blood vessel 2 needs to be adjusted, the push rod 11 can be unscrewed to release the resistance to the adjusting rod 4.

[0039] Preferably, both ends of the simulated blood vessel 2 are movably installed with fixing clamps 12. In order to increase the authenticity of the simulated blood vessel 2, during use, the two ends of the simulated blood vessel 2 can be externally connected to an infusion device, and then liquid can be injected into the simulated blood vessel 2. When the infusion needle is inserted into the blood vessel, the liquid will enter the inside of the infusion needle, simulating the real feeling of blood returning from the infusion needle. In addition, the filling degree of the simulated blood vessel 2 can be adjusted by adjusting the amount of liquid injected into the simulated blood vessel 2. The greater the filling degree, the greater the pressure in the simulated blood vessel 2, and the smaller the filling degree, the smaller the pressure in the simulated blood vessel 2. More aspects of the simulated blood vessel 2 can be adjusted, and then the fixing clamp 12 can be used to clamp the simulated blood vessel 2 to prevent the injected liquid from flowing out.

[0040] Preferably, there are multiple adjusting rods 4 and simulated blood vessels 2, and the multiple adjusting rods 4 and simulated blood vessels 2 are equidistantly arranged around the central axis of the inner column 3. The arrangement of multiple simulated blood vessels 2 can form a more complex vascular system inside the flexible outer tube 1, increasing the challenge of intravenous infusion puncture.

[0041] The working principle and use process of the utility model are as follows: when using the device, first assemble the various components, and clamp the multiple clamping beads 1 503 and the multiple clamping beads 2 703 on the simulated blood vessel 2 on the corresponding clamping ring 1 502 and the clamping ring 2 702 respectively to fix the position of the simulated blood vessel 2, and then pass the two ends of the simulated blood vessel 2 through the two ends of the inner column 3, pull the two ends of the simulated blood vessel 2 to make the fixing convex ring 8 clamped into the inside of the fixing groove 9, and then insert the inner column 3 into the flexible outer tube 1, and fix the two ends of the inner column 3 with the two ends of the flexible outer tube 1 by threading, and then rotate the adjusting rod 4, at this time the adjusting rod 4 drives the first fixing The fixing piece 5 moves in the recessed groove 6, while the position of the second fixing piece 7 remains unchanged. At this time, the simulated blood vessel 2 is bent. After the simulated blood vessel 2 is adjusted, the top rod 11 is rotated so that one end of the top rod 11 is against the adjusting rod 4 to prevent the adjusting rod 4 from rotating at will. Then, the two fixing clamps 12 are respectively installed at the two ends of the simulated blood vessel 2, and one of the fixing clamps 12 is clamped. Then, liquid is injected into the simulated blood vessel 2. The filling degree of the simulated blood vessel 2 can be adjusted by the amount of liquid injected into the simulated blood vessel 2. Then, the other fixing clamp 12 is clamped. Finally, a suitable needle insertion point is found to practice intravenous infusion puncture.

[0042] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0043] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A puncture instrument for intravenous infusion nursing teaching, comprising a hollow flexible outer tube (1) with openings at both ends and a hollow simulated blood vessel (2) with openings at both ends, characterized in that: An inner column (3) is movably inserted into the interior of the flexible outer tube (1), and adjustment rods (4) are inserted through both ends of the inner column (3). The adjustment rod (4) and the inner column (3) are movably connected. A plurality of first fixing members (5) are provided on the adjustment rod (4), and a plurality of recessed grooves (6) respectively used for the movement of the plurality of first fixing members (5) are provided on the outer wall of the inner column (3). One end of the first fixing member (5) extends to the outside of the recessed groove (6), and a plurality of second fixing members (7) are provided on the inner column (3). The plurality of first fixing members (5) and the plurality of second fixing members (7) are arranged at intervals and are used to connect the simulated blood vessel (2) between the flexible outer tube (1) and the inner column (3).

2. The intravenous infusion nursing teaching puncture instrument according to claim 1, characterized in that: The first fixing member (5) comprises a bottom column (501) connected to the adjusting rod (4), a clamping ring (502) connected to the end of the bottom column (501) away from the adjusting rod (4), and a clamping bead (503) adapted to the clamping ring (502); the second fixing member (7) comprises a bottom column (701) connected to the inner column (3), a clamping ring (702) connected to the end of the bottom column (701) away from the inner column (3), and a clamping bead (703) adapted to the clamping ring (702); the clamping bead (503) and the clamping bead (703) are both connected to the bottom of the simulated blood vessel (2).

3. The intravenous infusion nursing teaching puncture instrument according to claim 1, characterized in that: The two ends of the simulated blood vessel (2) are respectively movably inserted through the two ends of the inner column (3); a fixing convex ring (8) is provided on the simulated blood vessel (2); and a fixing groove (9) adapted to the fixing convex ring (8) is provided on the inner column (3).

4. The intravenous infusion nursing teaching puncture instrument according to claim 1, characterized in that: Both ends of the flexible outer tube (1) are connected to fixing sleeves (10), and the outer walls of both ends of the inner column (3) are respectively threadedly connected to the inner walls of the two fixing sleeves (10).

5. The intravenous infusion nursing teaching puncture instrument according to claim 1, characterized in that: The inner column (3) is threadedly connected with a push rod (11) for fixing the adjusting rod (4).

6. The intravenous infusion nursing teaching puncture instrument according to claim 1, characterized in that: Fixing clamps (12) are movably mounted on both ends of the simulated blood vessel (2).

7. The intravenous infusion nursing teaching puncture instrument according to claim 1, characterized in that: The number of the adjusting rods (4) and the simulated blood vessels (2) are both multiple, and the multiple adjusting rods (4) and the simulated blood vessels (2) are all arranged at equal distances around the central axis of the inner column (3).

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