Chemotherapy drug extravasation closure angle indicator

Abstract

The utility model discloses a kind of chemotherapy drug exosmosis closure angle indicating instrument, including guide disc, handle, clamping assembly, angle adjusting device and guide cylinder, the handle is transversely connected below guide disc, clamping assembly is slidably connected inside guide disc, angle adjusting device is vertically arranged above clamping assembly, and angle adjusting device is connected with clamping assembly, guide cylinder is set above angle adjusting device and is rotatably connected on angle adjusting device, the utility model can accurately adjust the angle between syringe and patient's skin when carrying out closed injection to patient, to avoid that puncture angle is too large or too small, to ensure that closed injection effect is reached while reducing patient's pain.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a chemotherapy drug extravasation sealing angle indicator. Background Technology

[0002] The Chinese Nursing Association's group standard, "Prevention and Management of Chemotherapy Drug Extravasation," states that when chemotherapy drug extravasation occurs, local injection should be administered as prescribed by the physician. Clinically, a local circular injection method is generally used to manage chemotherapy drug extravasation. The specific procedure involves using a 4.5-5.5 gauge needle, selecting an entry point 2-3 cm from the outer edge of the extravasation area, and inserting the needle at an angle of 15°-20° in multiple directions (left, center, and right). Depending on the size of the extravasation area, multiple fan-shaped injections are performed, and finally, a circular injection is applied to the entire extravasation site while simultaneously injecting the medication. However, in practice, nursing staff often rely on experience and intuition to perform low-angle needle insertions. Whether the 15°-20° angle is appropriate is uncertain. If the angle is too large, it will indirectly increase the number of punctures and increase patient discomfort; if the angle is too small, the injection will not achieve the desired sealing effect. Utility Model Content

[0003] The present invention aims to overcome the shortcomings of the prior art, which is that nurses mainly rely on experience and intuition to perform low-angle needle punctures, and whether the needle puncture angle is within the range of 15° to 20° is unknown. If the needle puncture angle is too large, it will indirectly increase the number of punctures and increase the patient's pain. If the needle puncture angle is too small, the sealing injection effect will not be achieved.

[0004] A chemotherapy drug extravasation sealing angle indicator is proposed, comprising a guide plate, a handle, a snap-fit ​​assembly, an angle adjustment device, and a guide cylinder. The handle is horizontally connected to the lower part of the guide plate, the snap-fit ​​assembly is slidably connected to the inside of the guide plate, the angle adjustment device is vertically arranged above the snap-fit ​​assembly and connected to the snap-fit ​​assembly, and the guide cylinder is arranged above the angle adjustment device and rotatably connected to the angle adjustment device.

[0005] In this invention, an angle adjustment component is provided above the guide plate. After the syringe is placed inside the guide tube, the angle between the syringe and the patient's skin can be adjusted using the angle adjustment component. A scale line is provided at the position of the damping rotator on the angle adjustment component. Therefore, when adjusting the syringe, medical personnel can observe the angle between the syringe and the patient's skin through the scale line at the position of the damping rotator for precise adjustment. This avoids the angle between the syringe and the patient's skin being too large or too small. This addresses the shortcomings mentioned in the technical background, where nurses mainly rely on experience and intuition for low-angle needle insertion, and whether it conforms to the 15°–20° insertion range is unknown. If the insertion angle is too large, it will indirectly increase the number of punctures and increase patient pain; if the insertion angle is too small, the sealing injection effect will not be achieved.

[0006] In a preferred embodiment of the present invention, the handle is provided with a plurality of locking blocks above it for connecting with the guide plate, so that when an injection is required, the guide plate can be fixed on the patient's palm by means of the handle.

[0007] In a preferred embodiment of the present invention, a slot is provided on the guide plate at the position corresponding to the card block. After the card block is inserted into the slot, the handle and the guide plate can be connected together by a snap-fit ​​mechanism.

[0008] In a preferred embodiment of the present invention, the guide disk has a guide groove inside, and the snap-fit ​​component is connected in the guide groove. The snap-fit ​​component is slidably connected in the guide groove, so when the snap-fit ​​component slides, the guide disk will guide the snap-fit ​​component.

[0009] In a preferred embodiment of the present invention, the outer wall of the guide plate is provided with scale lines and locking holes that cooperate with the locking component. When the locking component slides according to the shape of the guide plate, the angle of rotation of the locking component can be observed through the scale lines on the outer wall of the guide plate.

[0010] In a preferred embodiment of the present invention, the snap-fit ​​assembly includes a sliding plate, a fixing bolt, and ball bearings. The sliding plate is slidably disposed in the guide groove, the fixing bolt is laterally disposed on the outside of the guide plate and connected to the sliding plate, and there are multiple ball bearings connected to the bottom of the sliding plate. An angle adjustment device is connected to the sliding plate. The sliding plate contacts the guide groove through the ball bearings. Therefore, when the sliding plate slides according to the shape of the guide groove, the ball bearings will roll, thereby reducing the friction between the sliding plate and the guide groove.

[0011] In a preferred embodiment of the present invention, the angle adjustment device includes a movable plate, a rotating rod, a hinge rod, and a rotating plate. The movable plate is connected to a sliding plate, and the rotating plate is positioned above the movable plate. There are two sets of hinge rods and rotating rods, which are respectively positioned on both sides of the guide cylinder. One end of the hinge rod and rotating rod is hinged to the movable plate and the rotating plate, respectively, and the other end of the hinge rod and rotating rod is hinged to each other. When the patient needs an injection, the rotating plate can be lifted upwards. After adjusting the angle between the rotating plate and the patient's arm, the syringe can be inserted into the guide cylinder, thereby lifting the syringe upwards through the rotating plate to ensure the needle insertion angle of the syringe.

[0012] In a preferred embodiment of the present invention, a damping rotator is provided at the hinge joint of the hinge rod and the rotating rod. Similarly, damping rotators are provided at the connection between the hinge rod and the moving plate and at the hinge joint between the rotating rod and the rotating plate. After the rotating plate rotates to the required angle, the damping rotator will limit the angle of the rotating plate at this time, thereby preventing the rotating plate from falling suddenly.

[0013] In a preferred embodiment of the present invention, the rotating plate is provided with a storage groove for accommodating the hinge rod and the rotating rod. After injection, the two sets of hinge rods and the rotating rod can be folded and stored inside the storage groove to reduce the space occupied by the hinge rods and the rotating rod.

[0014] In a preferred embodiment of the present invention, both the hinge rod and the rotating rod are equipped with pointers and scale lines, so that when puncture is required on the patient, the angle between the syringe and the patient's skin can be observed through the scale lines and pointers.

[0015] The advantages of this utility model compared with the prior art are:

[0016] This invention allows for precise adjustment of the angle between the syringe and the patient's skin during closed injection, preventing excessively large or small puncture angles. This ensures effective closed injection while minimizing patient discomfort. Two storage slots on the rotating plate allow for folding and storage of the hinge and rotating rods after use, reducing the space occupied by the angle adjustment component. The guide tube guides the syringe during puncture or needle withdrawal, preventing wobbling. The handle, made of elastic plastic, is attached to the guide plate via an umbrella-shaped block, allowing for customization based on usage needs. Furthermore, the handle secures the guide plate to the patient during injection, preventing it from slipping off. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an angle adjustment device for a chemotherapy drug extravasation sealing angle indicator when it is in the 30° position.

[0018] Figure 2 This is a schematic diagram of the structure of an angle adjustment device for a chemotherapy drug extravasation sealing angle indicator when it is in the 15° position.

[0019] Figure 3 A schematic diagram of a chemotherapy drug extravasation sealing angle indicator;

[0020] Figure 4 A schematic diagram of the slot structure of a chemotherapy drug extravasation sealing angle indicator;

[0021] Figure 5 A schematic diagram of the handle structure of a chemotherapy drug extravasation sealing angle indicator;

[0022] Figure 6 A top view schematic diagram of the guide disc structure of a chemotherapy drug extravasation sealing angle indicator;

[0023] Figure 7 for Figure 6 A schematic diagram of the AA half section;

[0024] Figure 8 for Figure 7 A schematic diagram of point B;

[0025] Figure 9 This is a schematic diagram of the angle adjustment device of a chemotherapy drug extravasation sealing angle indicator.

[0026] Figure 10 for Figure 9 A schematic diagram of point C;

[0027] Figure 11 for Figure 9 A schematic diagram of point D;

[0028] Figure 12 Left view schematic diagram of the angle adjustment device of a chemotherapy drug extravasation sealing angle indicator;

[0029] Figure 13 for Figure 12 A schematic diagram of point E;

[0030] In the diagram: 1-Guide plate, 11-Slot, 12-Guide groove, 2-Handle, 21-Clocking block, 3-Clocking assembly, 31-Sliding plate, 32-Fixing bolt, 33-Ball bearing, 4-Angle adjustment device, 41-Moving plate, 42-Rotating rod, 43-Hinge rod, 44-Rotating plate, 5-Guide cylinder, 6-Scale line, 7-Clocking hole, 8-Damping rotator, 9-Storage slot, 10-Pointer. Detailed Implementation

[0031] The following will refer to the appendix in the embodiments of this utility model. Figure 1-13 The technical solutions in the embodiments of this utility model will be described in detail below.

[0032] like Figure 1-3 As shown, a chemotherapy drug extravasation sealing angle indicator includes a guide plate 1, a handle 2, a snap-fit ​​assembly 3, an angle adjustment device 4, and a guide cylinder 5. The handle 2 is made of a plastic material (such as polyurethane) with elastic deformation capability.

[0033] like Figure 1-3 As shown, there are three locking blocks 21 above the handle 2. The three locking blocks 21 are arranged above the handle 2 along the length direction of the handle 2, and all three locking blocks 21 are vertically attached to the handle 2. The handle 2 is located below the guide plate 1, and the guide plate 1 has a slot 11 at the position corresponding to the three locking blocks 21.

[0034] like Figure 1-3 As shown, after inserting the card block 21 into the card slot 11, the handle 2 can be connected to the guide plate 1 by a snap-fit. Therefore, after the handle 2 is damaged or used up, the handle 2 can be removed from the guide plate 1 for replacement or stored away to reduce storage space.

[0035] like Figure 1-3 As shown, during injection, the patient's palm can pass through the handle 2, at which point the patient's palm will spread the two ends of the handle 2 outwards, and the handle 2 can clamp and fix the patient's palm, thereby fixing the guide plate 1 on the patient's palm.

[0036] like Figure 1-3 As shown, the shape of handle 2 can be changed according to the injection site. For example, when the patient's extravasation point is on the arm, the shape of handle 2 can be changed to a circle, so that the patient's arm can be clamped by the round handle 2.

[0037] like Figure 4-5 As shown, a semi-circular guide groove 12 is provided inside the guide disk 1 according to the shape of the guide disk 1, and the guide groove 12 is located above the slot 11. The snap-fit ​​component 3 is slidably connected in the guide groove 12, so the snap-fit ​​component 3 can slide according to the shape of the guide disk 1.

[0038] like Figure 4-5 As shown, when the snap-fit ​​component 3 slides, the guide disk 1 will guide the snap-fit ​​component 3. The outer wall of the guide disk 1 is vertically provided with scale lines 6. When the snap-fit ​​component 3 slides according to the shape of the guide disk 1, it can pass through the scale lines 6 on the outer wall of the guide disk 1.

[0039] like Figure 4-5 As shown, observe the angle of rotation of the snap-fit ​​component 3. After the snap-fit ​​component 3 rotates to the required angle, the position of the snap-fit ​​component 3 can be restricted by the snap-fit ​​hole 7, thereby preventing the snap-fit ​​component 3 from shifting.

[0040] like Figure 6-8 As shown, the snap-fit ​​assembly 3 includes a sliding plate 31, a fixing bolt 32, and a ball bearing 33. The sliding plate 31 is disposed in the guide groove 12, the angle adjustment device 4 is vertically connected to the sliding plate 31, and the fixing bolt 32 is horizontally disposed on the outside of the guide plate 1, with one end of the fixing bolt 32 threadedly connected to the sliding plate 31.

[0041] like Figure 6-8 As shown, there are four balls 33, all of which are located below the sliding plate 31. The four balls 33 are respectively located at the four corners of the sliding plate 31. The four balls 33 are embedded in the sliding plate 31, and the sliding plate 31 contacts the guide groove 12 through the balls 33.

[0042] like Figure 6-8 As shown, when the sliding plate 31 slides according to the shape of the guide groove 12, the ball 33 will roll, thereby reducing the friction between the sliding plate 31 and the guide groove 12. The angle adjustment device 4 is connected to the sliding plate 31.

[0043] like Figure 6-8 As shown, when the sliding plate 31 slides in the guide groove 12, it will drive the sliding plate 31 to slide synchronously, thereby adjusting the needle insertion direction of the angle adjustment device 4. When the sliding plate 31 slides, it will also drive the fixing bolt 32 to slide.

[0044] like Figure 6-8 As shown, the fixing bolt 32 is located below the scale line 6 on the outer wall of the guide plate 1, so the sliding angle of the sliding plate 31 can be observed through the fixing bolt 32 and the scale line 6 when the sliding plate 31 slides.

[0045] like Figure 6-8 As shown, after the sliding plate 31 and the angle adjustment device 4 are slid to the required angle, the fixing bolt 32 can be turned in the forward direction until the fixing bolt 32 is inserted into the inside of the locking hole 7, thereby restricting the position of the sliding plate 31.

[0046] like Figure 6-8As shown, similarly, when the sliding plate 31 needs to slide, the fixing bolt 32 can be turned in the opposite direction until the fixing bolt 32 is turned out from the inside of the locking hole 7, at which point the sliding plate 31 can continue to rotate.

[0047] like Figure 9-13 As shown, the angle adjustment device 4 includes a movable plate 41, a rotating rod 42, a hinge rod 43, and a rotating plate 44. The movable plate 41 is disposed above the guide plate 1 and connected to the sliding plate 31 by screws. The rotating plate 44 is disposed above the movable plate 41.

[0048] like Figure 9-13 As shown, the guide cylinder 5 is located in the middle position above the rotating plate 44, and the guide cylinder 5 is snapped onto the rotating plate 44. There are two sets of rotating rods 42 and hinge rods 43, both of which are set in the middle position between the rotating plate 44 and the moving plate 41, and the two sets of rotating rods 42 and hinge rods 43 are respectively set on both sides of the guide groove 12.

[0049] like Figure 9-13 As shown, one end of the hinge rod 43 and the rotating rod 42 are connected to the rotating plate 44 and the moving plate 41 respectively, and the other ends of the hinge rod 43 and the rotating rod 42 are hinged to each other. The rotating plate 44 is provided with a storage groove 9 at the positions of the two sets of hinge rods 43 and rotating rods 42.

[0050] like Figure 9-13 As shown, after the injection is completed, the two sets of hinge rods 43 and rotating rods 42 can be folded and stored inside the storage slot 9 to reduce the space occupied by the hinge rods 43 and rotating rods 42. When the patient needs an injection, the rotating plate 44 can be lifted upwards.

[0051] like Figure 9-13 As shown, after adjusting the angle between the rotating plate 44 and the patient's arm, the syringe can be inserted into the guide tube 5, thereby lifting the syringe upwards through the rotating plate 44 to ensure the needle insertion angle of the syringe. During the closed injection process, the guide tube 5 can guide the syringe.

[0052] like Figure 9-13 As shown, a damping rotator 8 is provided at the hinge joint of the hinge rod 43 and the rotating rod 42. The damping rotator 8 at the hinge joint of the hinge rod 43 and the rotating rod 42 is connected to the rotating rod 42. The damping rotator 8 at the hinge joint of the hinge rod 43 and the rotating rod 42 is connected to the rotating rod 42 by screws.

[0053] like Figure 9-13 As shown, the output end of the damping rotator 8 at the hinge of the hinge rod 43 and the rotating rod 42 is connected to the hinge rod 43. The end of the rotating rod 42 located at one end of the hinge rod 43 is provided with a scale line 6, while the end of the hinge rod 43 located at one end of the rotating rod 42 is provided with a pointer 10.

[0054] like Figure 9-13 As shown, the pointer 10 is attached to the preset groove of the hinge rod 43. Therefore, when the rotating plate 44 is lifted upward, the angle between the rotating rod 42 and the hinge rod 43 can be observed through the pointer 10 and the scale line 6.

[0055] like Figure 9-13 As shown, damping rotators 8 are also provided at the connection between the hinge rod 43 and the moving plate 41 and at the hinge between the rotating rod 42 and the rotating plate 44. The damping rotators 8 at the connection between the hinge rod 43 and the moving plate 41 and at the hinge between the rotating rod 42 and the rotating plate 44 are respectively connected to the moving plate 41 and the rotating plate 44.

[0056] like Figure 9-13 As shown, the output ends of the damping rotator 8 on the moving plate 41 and the rotating plate 44 are connected to the hinge rod 43 and the rotating rod 42, respectively. The moving plate 41 is provided with a scale line 6 at the position of the damping rotator 8.

[0057] like Figure 9-13 As shown, a pointer 10 is provided at one end of the rotating rod 42 located on the moving plate 41. Therefore, when the rotating plate 44 is lifted upward, the angle between the rotating rod 42 and the moving plate 41 can be observed through the pointer 10 at one end of the rotating rod 42 located on the moving plate 41.

[0058] like Figure 9-13 As shown, the outer wall of the hinge rod 43 is provided with scale lines 6. After the angle between the rotating rod 42 and the hinge rod 43 and the angle between the rotating rod 42 and the moving plate 41 are adjusted, the angle between the rotating plate 44 and the patient's arm can be adjusted.

[0059] like Figure 9-13 As shown, when adjusting the angle between the rotating plate 44 and the patient's arm, the angle between the rotating plate 44 and the patient can be observed through the scale line 6 on the outer wall of the hinge rod 43. After rotating the edge of the rotating plate 44 to the position of 15° on the scale line 6 on the outer wall of the hinge rod 43, the angle between the axis of the guide cylinder 5 on the rotating plate 44 and the patient's skin is 15°.

[0060] The procedure in this embodiment is as follows: Before puncture, the maximum diameter of extravasation in the patient is measured, and the measured diameter data is entered into the table below. The number of punctures and the angle of puncture are then determined from the data in the table below.

[0061]

[0062] After the query is completed, the guide plate 1 can be fixed to the patient's arm by using handle 2. When fixing the guide plate 1 to the patient, the position of drug extravasation needs to be moved to the center of the guide plate 1, and then the rotating plate 44 is lifted upward.

[0063] If the injection angle is 15°, the pointer 10 of the hinge rod 43 at one end of the rotating rod 42 is rotated to point to the 15° position on the scale line 6 at one end of the hinge rod 43. At the same time, the pointer 10 of the rotating rod 42 at one end of the moving plate 41 is rotated to the 15° position on the scale line 6 at the position of the damping rotator 8 on the moving plate 41.

[0064] Then rotate the rotating plate 44 to the 15° position on the outer wall scale line 6 of the hinge rod 43. When the two pointers 10 point to the 15° position on the scale line 6 at the same time, and the edge of the rotating plate 44 coincides with the 15° position on the outer wall scale line 6 of the rotating rod 42, the angle between the axis of the guide cylinder 5 and the patient's arm is 15°, and so on.

[0065] After adjusting the angle of needle insertion, turn the fixing bolt 32 in the opposite direction until the fixing bolt 32 is turned out from the inside of the jack hole 7. At this time, rotate the angle adjustment device 4 along the guide groove 12. When the angle adjustment device 4 rotates along the guide groove 12, the puncture position can be marked by the scale line 6 on the outer wall of the guide plate 1.

[0066] After marking the puncture site, the syringe can be inserted into the guide tube 5 to begin puncture. When performing puncture injection, the fixing bolt 32 needs to be rotated forward until the end of the fixing bolt 32 is turned into the locking hole 7.

[0067] This prevents the angle adjustment device 4 from shifting during puncture and injection. After puncture and injection at one puncture point, the end of the fixing bolt 32 can be turned out of the locking hole 7, and then the angle adjustment device 4 can be rotated along the guide groove 12 to the position of the next puncture and injection.

[0068] The above embodiments are only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed by this utility model shall fall within the scope of protection of this utility model.

Claims

1. A chemotherapy drug extravasation sealing angle indicator, characterized in that: The device includes a guide plate (1), a handle (2), a snap-fit ​​assembly (3), an angle adjustment device (4), and a guide cylinder (5). The handle (2) is horizontally connected to the bottom of the guide plate (1), the snap-fit ​​assembly (3) is slidably connected to the inside of the guide plate (1), the angle adjustment device (4) is vertically arranged above the snap-fit ​​assembly (3), and the angle adjustment device (4) is connected to the snap-fit ​​assembly (3). The guide cylinder (5) is arranged above the angle adjustment device (4) and rotatably connected to the angle adjustment device (4).

2. The chemotherapy drug extravasation sealing angle indicator according to claim 1, characterized in that: The handle (2) is provided with multiple locking blocks (21) above it for connecting to the guide plate (1).

3. The chemotherapy drug extravasation sealing angle indicator according to claim 2, characterized in that: A slot (11) is provided on the guide plate (1) at the position corresponding to the card block (21).

4. The chemotherapy drug extravasation sealing angle indicator according to claim 3, characterized in that: The guide plate (1) has a guide groove (12) inside, and the snap-fit ​​component (3) is connected in the guide groove (12).

5. The chemotherapy drug extravasation sealing angle indicator according to claim 4, characterized in that: The outer wall of the guide plate (1) is provided with scale lines (6) and multiple locking holes (7) that cooperate with the locking assembly (3).

6. The chemotherapy drug extravasation sealing angle indicator according to claim 5, characterized in that: The snap-fit ​​assembly (3) includes a sliding plate (31), a fixing bolt (32), and ball bearings (33). The sliding plate (31) is slidably disposed in the guide groove (12). The fixing bolt (32) is laterally disposed on the outside of the guide plate (1) and is connected to the sliding plate (31). There are multiple ball bearings (33) and they are all connected to the bottom of the sliding plate (31). An angle adjustment device (4) is connected to the sliding plate (31).

7. The chemotherapy drug extravasation sealing angle indicator according to claim 6, characterized in that: The angle adjustment device (4) includes a movable plate (41), a rotating rod (42), a hinge rod (43), and a rotating plate (44). The movable plate (41) is connected to the sliding plate (31), and the rotating plate (44) is located above the movable plate (41). There are two sets of hinge rods (43) and rotating rods (42). The two sets of hinge rods (43) and rotating rods (42) are respectively located on both sides of the guide cylinder (5). One end of the hinge rod (43) and rotating rod (42) is hinged to the movable plate (41) and rotating plate (44) respectively, and the other end of the hinge rod (43) and rotating rod (42) is hinged to each other.

8. The chemotherapy drug extravasation sealing angle indicator according to claim 7, characterized in that: The hinge joint of the hinge rod (43) and the rotating rod (42) is provided with a damping rotator (8), and the connection between the hinge rod (43) and the moving plate (41) and the hinge joint between the rotating rod (42) and the rotating plate (44) are also provided with a damping rotator (8).

9. A chemotherapy drug extravasation sealing angle indicator according to claim 8, characterized in that: The rotating plate (44) has a storage slot (9) for storing the hinge rod (43) and the rotating rod (42).

10. A chemotherapy drug extravasation sealing angle indicator according to claim 8, characterized in that: The ends of the hinge rod (43) and the rotating rod (42) are both equipped with pointers (10) and scale lines (6).

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