PICC catheter flushing tube visualization practice teaching aid

Abstract

The utility model relates to medical teaching model technical field, concretely is a PICC catheter flushes and seals the visual practice teaching aid, including simulation arm, PICC catheter and flusher, still including visual flushes and seals the liquid collection bottle, the part of PICC catheter is bonded in simulation arm outside, the head end of PICC catheter is detachably connected with flusher, simulation arm inside fixedly arranged has simulation blood vessel, the tip of PICC catheter enters simulation arm inside to simulation blood vessel, and again from simulation blood vessel is worn to simulation arm outside, the tip of PICC catheter is inserted to visual flushes and seals the liquid collection bottle, and the drainage groove cover is detachably arranged on visual flushes and seals the liquid collection bottle. The utility model discloses PICC catheter flushes and seals the visual practice teaching aid, and visual flushes and seals the liquid collection bottle can visually see the effect that flushes and seals the pipe, realizes the visualization of flushes and seals the pipe, opens the drainage groove cover and can flush the liquid in visual flushes and seals the liquid collection bottle and is discharged, and the convenient repeated use.

Description

Technical Field

[0001] This utility model relates to the field of medical teaching model technology, specifically to a visual teaching aid for PICC catheter flushing and sealing. Background Technology

[0002] PICC catheters (peripherally inserted central venous catheters) are widely used in clinical practice, providing patients with medium- to long-term intravenous access. Proper flushing and sealing procedures are crucial for preventing complications such as PICC catheter occlusion and patient infection, and are core skills that nursing staff must master.

[0003] Currently, the following problems exist in the teaching and assessment of PICC catheter flushing and sealing: 1. The operation process is not visible. The operation process of traditional teaching aids is closed. Trainees cannot directly observe the continuous vortex-like water column formed at the tip of the PICC catheter during pulse flushing. Therefore, they cannot understand why pulse flushing is used instead of direct flushing, nor can they observe whether a positive pressure water column is generated during positive pressure sealing. The teaching effect depends on the teacher's abstract description and the trainee's imagination, resulting in poor clinical training effect.

[0004] 2. Teachers cannot provide immediate feedback on whether students' operations are correct, such as whether the pulsed tube flushing and positive pressure sealing effects meet the standards. Traditional teaching aids cannot provide intuitive and visual assessments, and can only rely on experience, making it difficult to correct incorrect operations in a timely manner and forming incorrect muscle memory.

[0005] 3. Traditional teaching aids cannot simulate the entire process of flushing and sealing the PICC catheter, and cannot meet the needs of teaching and assessment.

[0006] Therefore, there is an urgent need for a visual teaching tool for PICC catheter flushing and sealing to solve the above problems. Utility Model Content

[0007] To address the shortcomings of traditional teaching aids, which cannot simulate the entire flushing and sealing process of PICC catheters and thus fail to meet teaching and assessment needs, and because the flushing and sealing procedures are not visual and teachers cannot provide immediate feedback on the correctness of students' operations, this invention provides a visual teaching aid for PICC catheter flushing and sealing. This aid realistically simulates the entire flushing and sealing process, making the flushing and sealing techniques visual. The visual flushing and sealing fluid collection bottle allows for a direct view of the flushing and sealing effects, thus meeting teaching and assessment requirements. Once the collection bottle is full, the flushing fluid can be drained by opening the drain trough, facilitating reuse.

[0008] This utility model provides a visual training tool for PICC catheter flushing and sealing, including a simulated arm, a PICC catheter, and a flushing device, as well as a visual flushing and sealing fluid collection bottle. Part of the PICC catheter is bonded to the outside of the simulated arm, and the tip of the PICC catheter is detachably connected to the flushing device. A simulated blood vessel is fixedly installed inside the simulated arm. The tip of the PICC catheter penetrates into the simulated blood vessel inside the simulated arm and then exits from the simulated blood vessel to the outside of the simulated arm. The tip of the PICC catheter is inserted into the visual flushing and sealing fluid collection bottle, and a drain trough cover is detachably installed on the visual flushing and sealing fluid collection bottle.

[0009] Furthermore, a stopper is fitted at the mouth of the visual flushing fluid collection bottle, and a through hole is provided on the stopper. The tip of the PICC catheter passes through the through hole and is inserted into the visual flushing fluid collection bottle. The tip of the PICC catheter is secured to the stopper through the through hole, and the flushing fluid in the PICC catheter flows into the visual flushing fluid collection bottle.

[0010] Furthermore, the visual flushing fluid collection bottle is provided with a drain port, the outer wall of which has a first external thread, and the drain trough cover has a first internal thread. The drain trough cover is threadedly connected to the drain port of the visual flushing fluid collection bottle. When the visual flushing fluid collection bottle is full, the drain trough cover can be opened to drain the flushing fluid from the bottle, facilitating reuse.

[0011] Furthermore, the PICC catheter includes a fixedly connected and communicating two-way connector assembly and a catheter body. The catheter body is a double-lumen catheter. Part of the two-way connector assembly is bonded to the outside of the simulated arm. Two flushing devices are provided. The two-way connector assembly is detachably connected to the two flushing devices. The tip of the catheter body penetrates into the simulated blood vessel inside the simulated arm and then exits from the simulated blood vessel to the outside of the simulated arm. The tip of the catheter body passes through a through hole and is inserted into a visual flushing fluid collection bottle.

[0012] Furthermore, the two-way assembly includes a positioning connector, two connecting tubes, and a connecting connector. The positioning connector is attached to the outside of the simulated arm with tape. One end of the positioning connector is fixedly connected to the head end of the catheter body, and the other end of the positioning connector is fixedly connected to one end of each of the two connecting tubes. One end of each of the two connecting tubes is inserted into and communicates with the two chambers of the catheter body. The other ends of each of the two connecting tubes are detachably connected to one end of each of the two connecting connectors. The other ends of each of the two connecting connectors are detachably connected to two flushing devices.

[0013] Furthermore, one end of each of the two connecting joints is threaded to the other end of the two connecting pipe heads, and the other end of each of the two connecting joints is threaded to the two flushers respectively.

[0014] Furthermore, it also includes a first support and a second support, the first support having a first groove and the second support having a second groove, the portion of the simulated arm being engaged in the first groove and the second groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This utility model provides a visual teaching aid for PICC catheter flushing and sealing, realistically simulating the entire process of flushing and sealing a PICC catheter. The flushing and sealing techniques are visualized, and the visual flushing and sealing fluid collection bottle allows for a direct view of the flushing and sealing effects, thus achieving visualization of the flushing and sealing process and meeting teaching and assessment needs. When the visual flushing and sealing fluid collection bottle is full, the flushing fluid can be drained by opening the drain trough cover, facilitating reuse. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the PICC catheter flushing and sealing visualization teaching aid of this utility model; Figure 2 This is a schematic diagram of the internal structure of the practice teaching aid of this utility model; Figure 3 This is a cross-sectional structural diagram of the simulated arm of this utility model; Figure 4 This is a top view of the first and second supports of this utility model. The labels in the attached drawings are: 1. Simulated arm; 11. Simulated blood vessel; 2. PICC catheter; 21. Two-way connector assembly; 211. Positioning connector; 212. Connecting tube head; 213. Connecting connector; 22. Catheter body; 3. Visualized flushing fluid collection bottle; 31. Drainage trough cover; 32. Bottle stopper; 33. Drainage port; 4. First stent; 5. Second stent. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] like Figures 1-4As shown, a visual training tool for flushing and sealing PICC catheters includes a simulated arm 1, a PICC catheter 2, and a flushing device (not shown in the diagram). The flushing device can be a pre-filled catheter flushing device. It also includes a visual flushing and sealing fluid collection bottle 3, made of transparent material. Part of the PICC catheter 2 is bonded to the outside of the simulated arm 1. The tip of the PICC catheter 2 is detachably connected to the flushing device. A simulated blood vessel 11 is fixedly installed inside the simulated arm 1. The tip of the PICC catheter 2 penetrates the simulated arm 1 into the simulated blood vessel 11 and then exits from the simulated blood vessel 11 back to the outside of the simulated arm 1. The tip of the PICC catheter 2 is inserted into the visual flushing and sealing fluid collection bottle 3. A drain cover 31 is detachably installed on the visual flushing and sealing fluid collection bottle 3. The simulated arm 1 can be made of highly elastic silicone material, and the simulated blood vessel 11 can be made of elastic material. The tip of the PICC catheter 2 is inserted into the simulated arm 1 and then out of the simulated blood vessel 11 to the outside of the simulated arm 1. The simulated arm 1 and simulated blood vessel 11 are set up to simulate the real clinical environment, making the effect more realistic.

[0019] Part of the PICC catheter 2 is bonded to the outside of the simulated arm 1 to ensure the smooth execution of subsequent pulse flushing and positive pressure sealing. After the pulse flushing and positive pressure sealing are completed, the bonding of the PICC catheter 2 is finished.

[0020] Practice using the teaching aids for pulsed flushing: Connect the flushing device to the tip of PICC catheter 2. Push the flushing device with one hand, employing a pulsed flushing technique (push-stop-push, using the right index and middle fingers to hold the front 1 / 3 of the flushing device, and the thenar eminence of the right hand to rhythmically push the piston, injecting 1ml each time with an interval of no more than 0.4s). The flushing fluid in the device flows through PICC catheter 2 and its tip into the visual flushing fluid collection bottle 3. At this point, you can observe whether the flushing fluid flowing from the tip of PICC catheter 2 forms a continuous vortex. The visual flushing fluid collection bottle 3 provides a direct view of the flushing effect, achieving visualization of the flushing process. If the flushing fluid forms a continuous vortex, the operation is correct (in clinical use, a vortex-like flushing fluid effectively flushes the walls of PICC catheter 2 and the blood vessel). If the flushing fluid is not a continuous vortex but a direct flush, it indicates an operational error. Direct flushing will create laminar flow, and the two effects are clearly contrasting.

[0021] Practice positive pressure sealing using the teaching aid: When there is 0.5ml-1ml of flushing fluid remaining in the flushing device, forcefully and quickly push the flushing device forward with positive pressure (using the thenar eminence) to seal the catheter. The flushing fluid in the flushing device flows through PICC line 2 and its tip into the visual flushing fluid collection bottle 3. At this time, you can observe whether the flushing fluid flowing from the tip of PICC line 2 is a continuous positive pressure water column. The visual flushing fluid collection bottle 3 provides a direct view of the sealing effect, achieving visualized positive pressure sealing. If the flushing fluid is a continuous positive pressure water column, the operation is correct. If the flushing fluid is not a continuous positive pressure water column, the operation is incorrect; the difference in effect is clear. Generally, after sealing, disconnect the syringe first.

[0022] Once the visual flushing fluid collection bottle 3 is full, the flushing fluid in the visual flushing fluid collection bottle 3 can be drained by opening the drain tank cover 31, making it convenient for reuse.

[0023] Practice aids can be used in teaching and assessment. Teachers use these aids to demonstrate pipe-sealing operations, allowing students to clearly see the techniques and the effects of pulsed pipe-sealing and positive pressure sealing. Teaching no longer relies on abstract descriptions from the teacher or the students' imagination. Students practice repeatedly using the aids, and teachers can promptly correct errors, effectively improving teaching outcomes.

[0024] Trainees use practice aids for assessment, allowing instructors to visually observe trainees' flushing and sealing techniques, as well as the effects of pulse flushing and positive pressure sealing, facilitating confirmation of whether trainees' operations meet standards. Instructors can also promptly correct trainees' errors, enabling them to improve in the future.

[0025] The assessment standards are based on the quality of the preparation steps and the quality of the operating procedures. The preparation steps include: 1. Personnel requirements: neat clothing and hats, handwashing, and wearing masks; 2. Environmental cleanliness: a clean, quiet, and well-lit environment that meets aseptic operation and occupational protection requirements; 3. Material preparation: flushing device, hand sanitizer, clean rubber gloves, etc. The operating procedures include: 1. Inspection: hand disinfection, checking the flushing device packaging for integrity; 2. Disinfecting the connector 213 on the PICC catheter 2; 3. Performing flushing and sealing operations.

[0026] The teaching aids in this embodiment have a simple overall structure, low overall production cost, and low maintenance cost.

[0027] The teaching aids in this embodiment realistically simulate the entire process of flushing and sealing the PICC catheter 2. The flushing and sealing techniques are visualized, and the effect of flushing and sealing can be seen intuitively in the visualized flushing and sealing fluid collection bottle 3, which realizes the visualization of flushing and sealing and meets the needs of teaching and assessment. After the visualized flushing and sealing fluid collection bottle 3 is full, the flushing fluid in the visualized flushing and sealing fluid collection bottle 3 can be drained by opening the drain tank cover 31, which is convenient for reuse.

[0028] In one possible implementation, a stopper 32 is fitted at the mouth of the visual flushing fluid collection bottle 3. The stopper 32 has a through hole, through which the tip of the PICC catheter 2 is inserted into the visual flushing fluid collection bottle 3. The tip of the PICC catheter 2 is secured to the stopper 32 through the through hole, and the flushing fluid in the PICC catheter 2 flows into the visual flushing fluid collection bottle 3.

[0029] In one possible implementation, the visual flushing fluid collection bottle 3 is provided with a drain port 33, the outer wall of the drain port 33 is provided with a first external thread, and the drain trough cover 31 is provided with a first internal thread. The drain trough cover 31 is threadedly connected to the drain port 33 of the visual flushing fluid collection bottle 3 through the first external thread and the first internal thread. When the visual flushing fluid collection bottle 3 is full, the drain trough cover 31 can be opened to drain the flushing fluid in the visual flushing fluid collection bottle 3, which is convenient for reuse.

[0030] In one possible implementation, the PICC catheter 2 includes a two-way connector 21 and a catheter body 22 that are fixedly connected and communicate with each other. The catheter body 22 is a double-lumen catheter. Part of the two-way connector 21 is bonded to the outside of the simulated arm 1. Two flushing devices are provided. The two-way connector 21 is detachably connected to the two flushing devices. The tip of the catheter body 22 is inserted into the simulated blood vessel 11 inside the simulated arm 1 and then out of the simulated blood vessel 11 to the outside of the simulated arm 1. The tip of the catheter body 22 is inserted into the visual flushing fluid collection bottle 3 through the through hole.

[0031] Two flushers simultaneously perform pulse flushing and positive pressure sealing operations.

[0032] Practice using the teaching aids to perform pulse flushing: Two flushers are connected to the two-way assembly 21. Push both flushers simultaneously with one hand. The flushing fluid in the two flushers flows through the two-way assembly 21 and the tip of the tubing body 22 into the visual flushing fluid collection bottle 3.

[0033] Practice the positive pressure sealing of the tube using the teaching aids: The flushing fluid in the two flushers flows through the tip of the two-way assembly 21 and the tube body 22 into the visual flushing fluid collection bottle 3.

[0034] In one possible implementation, the two-way assembly 21 includes a positioning connector 211, two connecting tube heads 212, and a connecting connector 213. The positioning connector 211 is attached to the outside of the simulated arm 1 with adhesive tape. One end of the positioning connector 211 is fixedly connected to and communicates with the head end of the catheter body 22. The other end of the positioning connector 211 is fixedly connected to one end of the two connecting tube heads 212. One end of each of the two connecting tube heads 212 is inserted into and communicates with the two chambers of the catheter body 22. The other ends of each of the two connecting tube heads 212 are detachably connected to one end of each of the two connecting connectors 213. The other ends of each of the two connecting connectors 213 are detachably connected to two flushing devices.

[0035] The positioning connector 211 is attached to the outside of the simulation arm 1 with adhesive tape to ensure the smooth operation of subsequent pulse-type tube flushing and positive pressure tube sealing. After the pulse-type tube flushing and positive pressure tube sealing are completed, the positioning connector 211 is no longer attached.

[0036] Generally, the catheter body 22, positioning connector 211, and two connecting tube ends 212 are assembled. After long-term use, if the connecting connector 213 shows signs of wear or leakage, it can be replaced.

[0037] Practice using the teaching aids to perform pulsed flushing: the flushing fluid in the two flushers flows through the two connecting joints 213, the connecting tube head 212, and the two chambers of the tubing body 22, and finally flows from the tip of the tubing body 22 into the visual flushing fluid collection bottle 3.

[0038] Practice the positive pressure sealing of the tube using teaching aids: The flushing fluid in the two flushers flows through the two connecting joints 213, the connecting tube head 212 and the two chambers of the tube body 22, and finally flows from the tip of the tube body 22 into the visual flushing fluid collection bottle 3.

[0039] In one possible implementation, one end of each of the two connecting joints 213 is threaded to the other end of each of the two connecting tube heads 212, and the other end of each of the two connecting joints 213 is threaded to each of the two flushing devices. The flushing devices are connected to the connecting joints 213 by threads, thereby enabling detachment and connection with the PICC catheter 2.

[0040] Preferably, one end of the connecting joint 213 is provided with a second internal thread, and the other end of the connecting pipe head 212 is provided with a second external thread. One end of the connecting joint 213 is threadedly connected to the other end of the connecting pipe head 212 through the second external thread and the second internal thread.

[0041] Preferably, the other end of the connecting joint 213 is provided with a third internal thread, and the flushing device is provided with a third external thread. The other end of the connecting joint 213 is threadedly connected to the flushing device through the third external thread and the third internal thread.

[0042] As one possible implementation, the system also includes a first support 4 and a second support 5, both of which are T-shaped. The first support 4 has a first groove, and the second support 5 has a second groove. The lower part of the simulated arm 1 is engaged in the first and second grooves. The first and second grooves are arc-shaped, with the first groove slightly larger than the shoulder joint of the simulated arm 1 and the second groove slightly larger than the wrist joint of the simulated arm 1. When the simulated arm 1 is placed on the operating table (palm facing up), and the teaching aid is used for pulse-type tube flushing or positive pressure tube sealing, the simulated arm 1 may move and affect the operation. Generally, one person needs to hold down the simulated arm 1 while another person performs the pulse-type tube flushing or positive pressure tube sealing operation. The design includes a first support 4 and a second support 5. In use, both the first support 4 and the second support 5 are attached to the work surface with tape, keeping them fixed in place. The rest of the simulated arm 1 remains on the work surface, with the shoulder joint of the simulated arm 1 fitting perfectly into the first groove and the wrist joint fitting perfectly into the second groove, thus keeping the simulated arm 1 fixed in place. This ensures the normal operation of pulse-type pipe flushing or positive pressure pipe sealing while also saving manpower.

[0043] The embodiments described above are merely preferred embodiments of this utility model and are only used to explain this utility model. They are not intended to limit the scope of implementation of this utility model. For those skilled in the art, other implementation methods can be easily made by substitution or modification based on the technical content disclosed in this specification. Therefore, all changes and improvements made to the principles and process conditions of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A visual training tool for flushing and sealing PICC catheters, comprising a simulated arm (1), a PICC catheter (2), and a flushing device, characterized in that, It also includes a visual flushing fluid collection bottle (3), part of the PICC catheter (2) is bonded to the outside of the simulated arm (1), the tip of the PICC catheter (2) is detachably connected to the flushing device, a simulated blood vessel (11) is fixedly installed inside the simulated arm (1), the tip of the PICC catheter (2) is inserted into the simulated blood vessel (11) and then out of the simulated blood vessel (11) to the outside of the simulated arm (1), the tip of the PICC catheter (2) is inserted into the visual flushing fluid collection bottle (3), and a drain trough cover (31) is detachably installed on the visual flushing fluid collection bottle (3).

2. The PICC catheter flushing and sealing visualization training tool according to claim 1, characterized in that, The bottle mouth of the visual flushing fluid collection bottle (3) is fitted with a bottle stopper (32), and the bottle stopper (32) is provided with a through hole. The tip of the PICC catheter (2) passes through the through hole and is inserted into the visual flushing fluid collection bottle (3).

3. The PICC catheter flushing and sealing visualization training tool according to claim 2, characterized in that, The visual flushing tube liquid collection bottle (3) is provided with a drain port (33), the outer wall of the drain port (33) is provided with a first external thread, the drain trough cover (31) is provided with a first internal thread, and the drain trough cover (31) is threadedly connected to the drain port (33) of the visual flushing tube liquid collection bottle (3).

4. The PICC catheter flushing and sealing visualization training tool according to claim 2, characterized in that, The PICC catheter (2) includes a fixedly connected and interconnected two-way assembly (21) and a catheter body (22). The catheter body (22) is a double-lumen catheter. Part of the two-way assembly (21) is bonded to the outside of the simulated arm (1). There are two flushers. The two-way assembly (21) is detachably connected to the two flushers. The tip of the catheter body (22) penetrates into the simulated blood vessel (11) inside the simulated arm (1) and then exits from the simulated blood vessel (11) to the outside of the simulated arm (1). The tip of the catheter body (22) passes through the through hole and is inserted into the visual flushing fluid collection bottle (3).

5. The PICC catheter flushing and sealing visualization training tool according to claim 4, characterized in that, The two-way assembly (21) includes a positioning connector (211), two connecting tubes (212) and a connecting connector (213). The positioning connector (211) is attached to the outside of the simulated arm (1) with tape. One end of the positioning connector (211) is fixedly connected to the head end of the catheter body (22). The other end of the positioning connector (211) is fixedly connected to one end of the two connecting tubes (212). One end of the two connecting tubes (212) is inserted into and communicates with the two chambers of the catheter body (22). The other end of the two connecting tubes (212) is detached from one end of the two connecting connectors (213). The other end of the two connecting connectors (213) is detached from two flushers.

6. The PICC catheter flushing and sealing visualization teaching aid according to claim 5, characterized in that, One end of each of the two connecting joints (213) is threaded to the other end of each of the two connecting tube heads (212), and the other end of each of the two connecting joints (213) is threaded to each of the two flushers.

7. The PICC catheter flushing and sealing visualization teaching aid according to claim 1, characterized in that, It also includes a first support (4) and a second support (5), the first support (4) having a first groove and the second support (5) having a second groove, and a portion of the simulated arm (1) being inserted into the first groove and the second groove.

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