CN111754850B - Arm venipuncture training model - Google Patents
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- 210000003462 vein Anatomy 0.000 claims abstract description 99
- 239000007788 liquid Substances 0.000 claims abstract description 61
- 238000004088 simulation Methods 0.000 claims abstract description 29
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 26
- 210000004872 soft tissue Anatomy 0.000 claims abstract description 21
- 238000007920 subcutaneous administration Methods 0.000 claims abstract description 21
- 239000003086 colorant Substances 0.000 claims abstract description 9
- 210000000707 wrist Anatomy 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 4
- 235000009852 Cucurbita pepo Nutrition 0.000 claims description 3
- 241000219122 Cucurbita Species 0.000 claims 1
- 239000008280 blood Substances 0.000 description 5
- 210000004369 blood Anatomy 0.000 description 5
- 241000233948 Typha Species 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000001802 infusion Methods 0.000 description 3
- 240000001980 Cucurbita pepo Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000000474 nursing effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010253 intravenous injection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
- G09B23/285—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine for injections, endoscopy, bronchoscopy, sigmoidscopy, insertion of contraceptive devices or enemas
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Abstract
The invention discloses an arm venipuncture training model, which comprises a high-simulation arm model with a hollow structure inside and a simulated vein arranged in the high-simulation arm model; a notch is arranged at the position of the high-simulation arm model needing to be punctured, and a puncturing module is filled in the notch to form the high-simulation arm model with a complete appearance; the puncture module comprises a simulated skin and a simulated subcutaneous soft tissue, the simulated subcutaneous soft tissue is provided with a vein groove with adjustable size, and a simulated vein of the puncture module is embedded in the vein groove; the simulated venous blood vessel is formed by connecting five pipelines in parallel, the distribution positions of the five pipelines are respectively an upper pipeline, a lower pipeline, a left pipeline, a right pipeline and a middle pipeline, one end of each pipeline is sealed by a buckle, and the other end of each pipeline is filled with liquid with different colors through five liquid storage tanks of the constant-pressure liquid supply device. The training model of the invention is convenient for the trainee to adjust the inclination, the depth or the position of the next puncture, and improves the puncture comfort of the patient.
Description
Technical Field
The invention relates to the field of medical education equipment. More particularly, the invention relates to an arm venipuncture training model.
Background
In the clinical nursing teaching of medical education, venipuncture belongs to invasive operation technology, intravenous injection and infusion are one of the conventional nursing operations which clinical medical personnel must master, and the basic skills can be mastered by the medical personnel through a large amount of practice, but the operation and practice on the human body have great limitation and danger, so that it is necessary to simulate an arm to replace a real arm for practice. The simulation arm in the prior art mainly solves the problem that the success rate of venipuncture is low, for example, the publication number is CN 110033681A, the invention name is the prior art of an arm venipuncture training model, and an operator can puncture under the guidance of imaging through vein imaging to improve the success rate of venipuncture. However, the depth and inclination of the puncture into the vein are difficult to determine, thereby affecting the pain of the patient and the effect of injection and infusion.
Disclosure of Invention
Aiming at the problem that the existing training model in the background technology does not train the depth and the inclination of puncture into the vein, the invention provides the arm vein puncture training model with the function of training the depth and the inclination of puncture into the vein, so as to train medical personnel to train the correct position of puncture and improve the puncture comfort of a patient.
To achieve these objects and other advantages in accordance with the purpose of the invention, an arm venipuncture training model is provided, comprising: the device comprises a high-simulation arm model for simulating skin and subcutaneous soft tissue and a simulated vein arranged in the high-simulation arm model; the interior of the high-simulation arm model is of a hollow structure and is used for storing standby simulated venous blood vessels in the high-simulation arm model;
gaps are arranged on the back of the hand, the wrist and the elbow of the high-simulation arm model, and a back of the hand puncture module, a wrist puncture module and an elbow puncture module are correspondingly filled on the back of the hand gap, the wrist gap and the elbow gap respectively to form the high-simulation arm model with complete appearance; the hand back puncture module, the wrist puncture module and the elbow puncture module comprise simulated skin and simulated subcutaneous soft tissue, vein grooves with adjustable sizes are formed in the simulated subcutaneous soft tissue, so that the hand back puncture module, the wrist puncture module and the elbow puncture module are suitable for simulated vein blood vessels with different sizes, the simulated vein blood vessels corresponding to the hand back puncture module, the wrist puncture module and the elbow puncture module are embedded in the vein grooves, one ends of the simulated vein blood vessels are sealed through buckles, and the other ends of the simulated vein blood vessels are connected with a constant-pressure liquid supply device and used for supplying liquid to the simulated vein blood vessels;
the simulated venous blood vessel is formed by connecting five pipelines in parallel, the distribution positions of the five pipelines are respectively an upper pipeline, a lower pipeline, a left pipeline, a right pipeline and a middle pipeline, one end of each pipeline is sealed by a buckle, and the other end of each pipeline is filled with liquid with different colors through five liquid storage tanks of the constant-pressure liquid supply device.
Preferably, the simulated vein of the hand back puncture module is embedded in the vein groove of the simulated subcutaneous soft tissue of the hand back puncture module, the simulated vein of the wrist puncture module is embedded in the vein groove of the simulated subcutaneous soft tissue of the wrist puncture module, and the simulated vein of the elbow puncture module is embedded in the vein groove of the simulated subcutaneous soft tissue of the elbow puncture module. Independent simulated vein vessels are respectively embedded in the hand back puncture module, the wrist puncture module and the elbow puncture module, so that the simulated vein vessels of different puncture modules can be conveniently replaced. For example, after puncture many times, when puncture department weeping, will simulate vein blood vessel's a section and pull out the back and cut off, can with buckle chucking closure.
Preferably, the hand back gap, the wrist gap and the elbow gap are respectively connected with the hand back puncture module, the wrist puncture module and the elbow puncture module in a hinged mode. The puncture module is convenient to open the notch, the puncture module is tilted, and the simulated vein on the puncture module is replaced or checked.
Preferably, the buckle is a thin sheet with a through hole, and the through hole is in a long gourd shape.
Preferably, the five pipelines are connected in parallel without gaps to form the simulated vein vessel, or the five pipelines are integrally formed into the simulated vein vessel.
Preferably, the puncture module is provided with sheet type pressure sensors at both sides of the simulated venous blood vessel for detecting and preventing erroneous operation of puncturing from both left and right sides of the simulated venous blood vessel.
Preferably, the sensing part of the thin-sheet pressure sensor is arranged as a cambered surface cattail sheet, the cambered surfaces of the cambered surface cattail sheets of the two thin-sheet pressure sensors are arranged oppositely, the puncture module is used for sleeving the simulated venous blood vessel, a fine seam used for puncture is reserved between the two cambered surface cattail sheets, and the fine seam is positioned right above the simulated venous blood vessel.
Preferably, the constant-pressure liquid supply device and the sheet type pressure sensor are respectively and electrically connected with the controller; five pipelines for simulating venous blood vessels are determined as an upper pipeline, a lower pipeline, a left pipeline, a right pipeline and a middle pipeline according to distribution positions. The upper pipeline simulating the venous blood vessel is filled with red liquid, the lower pipeline is filled with black liquid, the left pipeline is filled with blue liquid, the right pipeline is filled with cyan liquid, and the middle pipeline is filled with red liquid.
Preferably, the control process of the thin-sheet type pressure sensor through the controller is as follows: when an operator punctures from the left side of the simulated vein, the needle head presses against the left sheet type pressure sensor, the left sheet type pressure sensor detects a signal and transmits the signal to the controller, and the controller sends out a voice alarm signal of 'position is deviated to the left'; when an operator punctures from the right side of the simulated vein, the needle head presses against the sheet type pressure sensor on the right side, the sheet type pressure sensor on the right side detects a signal and transmits the signal to the controller, and the controller sends out a voice alarm signal of 'position is inclined to the right'; when an operator punctures from the right above the simulated vein, the needle head does not touch the thin-sheet pressure sensor, the operator can puncture the simulated vein smoothly, the controller does not send out an alarm signal, when the puncture depth of the needle head is correct, the needle head reflows red liquid, when the puncture depth of the needle head is too shallow or too deep, the needle head reflows yellow or black liquid, and when the puncture depth of the needle head is too left or right, the needle head reflows blue or cyan liquid. The needle head is too shallow, too deep, or to the left or right, which is likely to cause unsmooth injection, transfusion and blood drawing, and also likely to hurt the left wall, the right wall or the bottom wall of the vein, and can bring discomfort to the puncture of the patient.
The invention at least comprises the following beneficial effects:
1. the simulated venous blood vessel is formed by connecting five pipelines in parallel, the distribution positions of the five pipelines are respectively an upper pipeline, a lower pipeline, a left pipeline, a right pipeline and a middle pipeline, the five pipelines are respectively filled with liquid with different colors, and when the puncture positions, the depths and the gradients are different, the colors of the return blood of the simulated venous blood vessel are different, so that a trainer can adjust the gradient, the depth or the position of the next puncture, a skilled optimal puncture position, depth and gradient can be obtained step by step, and the puncture comfort of a patient is improved.
2. The vein groove with adjustable size is arranged on the simulated subcutaneous soft tissue of the puncture module, so that the vein puncture module is convenient to be applied to simulated vein vessels with different sizes.
3. According to the invention, the back-of-hand gaps, the wrist gaps and the elbow gaps of the high-simulation arm model are filled with the corresponding puncture modules, and the independent simulated vein vessels are embedded in each puncture module, so that the simulated vein vessels of different puncture modules can be conveniently replaced. For example, after puncture many times, when puncture department weeping, will simulate vein blood vessel's a section and pull out the back and cut off, can with buckle chucking closure.
4. According to the invention, each puncture module is hinged with the corresponding notch on the high-simulation arm model, so that the notches can be conveniently opened, the puncture module is tilted, and the simulated vein on the puncture module is replaced or checked.
5. According to the invention, the sheet type pressure sensors are arranged on the two sides of the simulated vein of the puncture module, so that the wrong operation of puncturing from the left side and the right side of the simulated vein can be detected and prevented.
6. According to the invention, the sensing part of the sheet type pressure sensor is arranged to be the arc-shaped cattail sheet, so that the optimization of the puncture position for training puncture is further improved, the puncture of unnecessary parts can be avoided, and the service life of the simulated vein is prolonged. And then the voice alarm of the sheet type pressure sensor detection and controller prompts an operator and the liquid return indication after the puncture of the five pipelines filled with the liquid with different colors respectively, so that the operator can adjust the inclination, the depth or the position of the next puncture conveniently, the skilled best puncture position, depth and inclination can be obtained step by step, and the puncture comfort of the patient can be improved. Because the needle head is too shallow, too deep, or to the left or right, unsmooth injection, infusion and blood drawing are easy to cause, the left wall, the right wall or the bottom wall of the vein vessel is easy to be injured, and discomfort is brought to puncture of a patient.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic diagram of an implementation of an arm venipuncture training model of the present invention;
FIG. 2 is an enlarged view of a radial cross-section of a simulated venous blood vessel according to the present invention;
FIG. 3 is a schematic diagram of the wrist puncture module of the arm venipuncture training model of the present invention in an open state;
FIG. 4 is an enlarged view of the thin-plate pressure sensor arranged on both sides of the simulated vein according to the present invention;
wherein, the high simulation arm model 1; a wrist puncture module 2; an elbow puncture module 3; a simulated venous blood vessel 4; a constant-pressure liquid supply device 5; an upper pipeline 6; a lower pipeline 7; a left pipe 8; a right pipe 9; an intermediate pipe 10; a sheet-type pressure sensor 11; a wrist notch 12; and a buckle 13.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Fig. 1-3 illustrate one implementation of an arm venipuncture training model, which includes: the high-simulation arm model is provided with a high-simulation arm model 1 for simulating skin and subcutaneous soft tissue and a simulated vein 4 arranged in the high-simulation arm model 1; the interior of the high-simulation arm model 1 is of a hollow structure and is used for storing a standby simulated venous blood vessel 4 in the high-simulation arm model 1;
gaps are arranged on the back of the hand, the wrist and the elbow of the high-simulation arm model 1, and a back of the hand puncture module, a wrist puncture module 2 and an elbow puncture module 3 are respectively and correspondingly filled on the back of the hand gap, the wrist gap 12 and the elbow gap to form the high-simulation arm model 1 with a complete appearance; the back hand puncture module, the wrist puncture module 2 and the elbow puncture module 3 all comprise simulated skin and simulated subcutaneous soft tissue, vein grooves with adjustable sizes are formed in the simulated subcutaneous soft tissue, so that the back hand puncture module, the wrist puncture module 2 and the elbow puncture module 3 can be applied to simulated veins 4 with different sizes, the simulated veins 4 corresponding to the back hand puncture module, the wrist puncture module 2 and the elbow puncture module 3 are embedded in the vein grooves, one end of each simulated vein 4 is sealed through a buckle 13, and the other end of each simulated vein 4 is connected with a constant-pressure liquid supply device 5 and is used for supplying liquid to the simulated veins 4;
the simulated venous blood vessel 4 is formed by connecting five pipelines in parallel, the distribution positions of the five pipelines are respectively an upper pipeline, a lower pipeline, a left pipeline, a right pipeline and a middle pipeline, one end of each pipeline is closed through a buckle 13, the other end of each pipeline is filled with liquid with different colors through five liquid storage tanks of the constant-pressure liquid supply device 5, for example, an upper pipeline 6 of the simulated venous blood vessel 4 is filled with red liquid, a lower pipeline 7 is filled with black liquid, a left pipeline 8 is filled with blue liquid, a right pipeline 9 is filled with cyan liquid, and a middle pipeline 10 is filled with red liquid.
The realization process of the invention is as follows: when an operator punctures from the right upper part of the simulated vein 4, the backflow of the needle head is yellow liquid, and the puncture of the needle head is too shallow; if the needle head flows back to be black liquid, the needle head punctures too deeply; if the backflow of the needle head is blue liquid, the puncture of the needle head is deviated to the left; when the needle head flows back to be cyan liquid, the needle head punctures to the right; the needle head is back-flowed into red liquid, so that the puncture position of the needle head is optimum. When an operator punctures from the left side of the simulated vein 4, the backflow of the needle head is blue liquid, and the puncture of the needle head is too shallow; when the needle head flows back to be cyan liquid, the needle head punctures too deeply; when the needle head flows back to be black liquid, the needle head punctures downwards; according to different swing structures of the needle head, the puncture from the left side of the simulated vein 4 is judged, and the puncture position is not right. Therefore, the simulated venous blood vessel is formed by connecting five pipelines in parallel, is filled with liquid with different colors respectively, and can judge the puncture position, depth and inclination according to different colors of the return blood of the simulated venous blood vessel, so that a trainer can adjust the inclination, depth or position of the next puncture conveniently, a skilled optimal puncture position, depth and inclination can be obtained step by step, and the puncture comfort of a patient can be improved.
On the basis of the above embodiment, the simulated vein 4 of the back hand puncture module is embedded in the vein groove of the simulated subcutaneous soft tissue of the back hand puncture module, the simulated vein 4 of the wrist puncture module 2 is embedded in the vein groove of the simulated subcutaneous soft tissue of the wrist puncture module 2, and the simulated vein 4 of the elbow puncture module 3 is embedded in the vein groove of the simulated subcutaneous soft tissue of the elbow puncture module 3. Independent simulation vein 4 is inlayed respectively to back of the hand puncture module, wrist puncture module 2 and elbow puncture module 3, is convenient for the change of the simulation vein 4 of different puncture modules. For example, after puncture many times, when the puncture site leaks, one section of the simulated vein vessel 4 is pulled out and then cut off, and the clamping and the sealing are carried out by the buckle 13.
On the basis of the above embodiment, the hand back gap, the wrist gap 12 and the elbow gap are respectively connected with the hand back puncture module, the wrist puncture module 2 and the elbow puncture module 3 in a hinged manner. The notch is convenient to open, the puncture module is tilted, and the simulated vein 4 on the puncture module is replaced or checked.
On the basis of the above embodiment, the buckle 13 is a thin sheet with a through hole, and the through hole is in a long gourd shape.
On the basis of the above embodiment, the five pipelines are connected in parallel without a gap to form the simulated venous blood vessel 4, or the five pipelines are integrally formed into the simulated venous blood vessel 4.
In addition to the above embodiment, the puncture module is provided with the sheet-type pressure sensors 11 on both sides of the simulated vein 4 for detecting and preventing erroneous puncturing operations from both left and right sides of the simulated vein 4.
On the basis of the above embodiment, fig. 4 shows an implementation form of the thin-sheet pressure sensor 11, the sensing portion of the thin-sheet pressure sensor 11 is set as a cattail-shaped piece, the arc surfaces of the cattail-shaped pieces of the two thin-sheet pressure sensors 11 are oppositely arranged for sleeving the simulated venous blood vessel 4 of the puncture module, and a fine seam for puncture is left between the two cattail-shaped pieces, and the fine seam is located right above the simulated venous blood vessel 4.
On the basis of the above embodiment, the constant-pressure liquid supply device 5 and the sheet-type pressure sensor 11 are electrically connected to the controller respectively; five pipelines simulating the venous blood vessel 4 are set as an upper pipeline 6, a lower pipeline 7, a left pipeline 8, a right pipeline 9 and a middle pipeline 10 according to distribution positions. The upper pipeline 6 of the simulated vein 4 is filled with red liquid, the lower pipeline 7 is filled with black liquid, the left pipeline 8 is filled with blue liquid, the right pipeline 9 is filled with cyan liquid, and the middle pipeline 10 is filled with red liquid.
The realization process of the invention is as follows: when an operator punctures from the left side of the simulated vein 4, the needle head presses against the left sheet type pressure sensor 11, the left sheet type pressure sensor 11 detects a signal and transmits the signal to the controller, and the controller sends out a voice alarm signal of 'position is deviated to the left'; when an operator punctures from the right side of the simulated vein 4, the needle head presses against the sheet type pressure sensor 11 on the right side, the sheet type pressure sensor 11 on the right side detects a signal and transmits the signal to the controller, and the controller sends out a voice alarm signal of 'position is deviated from right'; when an operator punctures from the right above the simulated vein 4, the needle does not touch the thin-sheet pressure sensor 11 and can puncture into the simulated vein 4 smoothly, the controller does not send out an alarm signal, when the puncture depth of the needle is correct, the needle returns red liquid, when the puncture depth of the needle is too shallow or too deep, the needle returns yellow or black liquid, and when the puncture depth of the needle is too left or right, the needle returns blue or cyan liquid. The needle head is too shallow, too deep, or to the left or right, which is likely to cause unsmooth injection, transfusion and blood drawing, and also likely to hurt the left wall, the right wall or the bottom wall of the vein, and can bring discomfort to the puncture of the patient.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of adaptation of the invention, and further modifications can be easily implemented by those skilled in the art, so that the invention is not limited to the specific details and the examples shown herein, without departing from the general concept defined by the claims and the scope of equivalents.
Claims (9)
1. An arm venipuncture training model, which comprises a high-simulation arm model provided with simulated skin and simulated subcutaneous soft tissue and a simulated vein arranged in the high-simulation arm model, and is characterized in that,
the interior of the high-simulation arm model is of a hollow structure and is used for storing standby simulated venous blood vessels in the high-simulation arm model;
gaps are arranged on the back of the hand, the wrist and the elbow of the high-simulation arm model, and a back of the hand puncture module, a wrist puncture module and an elbow puncture module are correspondingly filled on the back of the hand gap, the wrist gap and the elbow gap respectively to form the high-simulation arm model with complete appearance; the back hand puncture module, the wrist puncture module and the elbow puncture module comprise simulated skin and simulated subcutaneous soft tissue, vein grooves with adjustable sizes are formed in the simulated subcutaneous soft tissue, and simulated vein blood vessels corresponding to the back hand puncture module, the wrist puncture module and the elbow puncture module are embedded in the vein grooves;
the simulated venous blood vessel is formed by connecting five pipelines in parallel, the distribution positions of the five pipelines are respectively an upper pipeline, a lower pipeline, a left pipeline, a right pipeline and a middle pipeline, one end of each pipeline is sealed by a buckle, and the other end of each pipeline is filled with liquid with different colors through five liquid storage tanks of the constant-pressure liquid supply device.
2. The arm vein puncture training model according to claim 1, wherein the simulated veins of the dorsal hand puncture module are embedded in the veins grooves of the simulated subcutaneous soft tissue of the dorsal hand puncture module, the simulated veins of the wrist puncture module are embedded in the veins grooves of the simulated subcutaneous soft tissue of the wrist puncture module, and the simulated veins of the elbow puncture module are embedded in the veins grooves of the simulated subcutaneous soft tissue of the elbow puncture module.
3. The training model of arm venipuncture as claimed in claim 2, wherein the dorsal hand notch, the wrist notch and the elbow notch are respectively connected with the dorsal hand puncture module, the wrist puncture module and the elbow puncture module by means of hinges.
4. The arm venipuncture training model of claim 3, wherein said clip is a thin plate with a through hole, said through hole being in the shape of a long gourd.
5. An arm vein puncture training model according to any one of claims 1-4, wherein the five pipelines are connected in parallel without gap to form a simulated vein vessel, or the five pipelines are integrally formed into the simulated vein vessel.
6. An arm vein puncture training model according to claim 5, wherein the puncture module is provided with a sheet type pressure sensor on both sides of the simulated vein for detecting and preventing erroneous operation of puncturing from both left and right sides of the simulated vein.
7. The arm vein puncture training model as claimed in claim 6, wherein the sensing portion of the thin-sheet pressure sensor is set as a cattail-shaped piece, the cambered surfaces of the cattail-shaped pieces of the two thin-sheet pressure sensors are oppositely arranged for sleeving the simulated vein of the puncture module, a thin seam for puncture is left between the two cattail-shaped pieces, and the thin seam is located right above the simulated vein.
8. The model for training arm venipuncture as claimed in claim 7, wherein said constant pressure liquid supply device and said thin-sheet type pressure sensor are electrically connected to the controller respectively; the upper pipeline simulating the venous blood vessel is filled with yellow liquid, the lower pipeline is filled with black liquid, the left pipeline is filled with blue liquid, the right pipeline is filled with cyan liquid, and the middle pipeline is filled with red liquid.
9. The training model of arm venipuncture as claimed in claim 8, wherein the control process of said thin-sheet type pressure sensor by the controller is: when an operator punctures from the left side of the simulated vein, the needle head presses against the left sheet type pressure sensor, the left sheet type pressure sensor detects a signal and transmits the signal to the controller, and the controller sends out a voice alarm signal of 'position is deviated to the left'; when an operator punctures from the right side of the simulated vein, the needle head presses against the sheet type pressure sensor on the right side, the sheet type pressure sensor on the right side detects a signal and transmits the signal to the controller, and the controller sends out a voice alarm signal of 'position is inclined to the right'; when an operator punctures from the right above the simulated vein, the needle head does not touch the thin-sheet pressure sensor, the operator can puncture the simulated vein smoothly, the controller does not send out an alarm signal, when the puncture depth of the needle head is correct, the needle head reflows red liquid, when the puncture depth of the needle head is too shallow or too deep, the needle head reflows yellow or black liquid, and when the puncture depth of the needle head is too left or right, the needle head reflows blue or cyan liquid.
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| CN110459085A (en) * | 2019-09-03 | 2019-11-15 | 李力 | A kind of human body comprehensive punctures Computer Simulation training and checking device |
| CN110599879A (en) * | 2019-09-26 | 2019-12-20 | 赣南医学院第一附属医院 | Venous catheter tube washing and sealing teaching device and method |
| CN111028645A (en) * | 2019-11-13 | 2020-04-17 | 广州医科大学附属顺德医院（佛山市顺德区乐从医院） | Device for improving training of ultrasonic puncture precision |
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2020
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