Anti-extravasation chemotherapy administration device

Abstract

The embodiment of the utility model provides a kind of anti-chemotherapy dosing device of extravasation, including box, positioning assembly, connecting mechanism, adjusting mechanism, injection tube, first pipe body, second pipe body and needle. The two sides of the box are connected with the first pipe body and the second pipe body respectively, the first pipe body is connected with the injection tube, the second pipe body is connected with the needle, the box is connected with the positioning assembly by the connecting mechanism, the positioning assembly can be fixed on the arm of patient, the adjusting mechanism is arranged on the box, the adjusting mechanism is used to adjust the flow of liquid medicine passing through the box, it is related to medical instrument field. By setting positioning assembly, the arm of patient is fixed, can avoid patient to move at will in the process of dosing, can ensure the stability of entire dosing process, avoid the risk of extravasation.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a chemotherapy delivery device that prevents extravasation. Background Technology

[0002] Currently, chemotherapy delivery devices used in clinical practice suffer from significant extravasation of the chemotherapy drug during administration. Extravasation not only affects the effective dosage of the chemotherapy drug and reduces treatment efficacy, but it can also damage the patient's local skin and tissues, causing adverse reactions such as pain, inflammation, and even necrosis, resulting in additional suffering for the patient.

[0003] Research and analysis have identified two main reasons for this problem. First, patients undergoing chemotherapy often experience fatigue and discomfort due to maintaining the same posture for extended periods, leading to involuntary movements. These movements can cause the needle to shift within the skin, disrupting the original seal and increasing the risk of extravasation. Second, excessive flow of the injected medication is also a key factor. Inaccurate flow control of the delivery device, resulting in the injection of too much medication in a short time, can cause a sudden increase in pressure at the needle tip. If this pressure exceeds the seal between the needle and skin, the medication will leak through the gaps, causing extravasation.

[0004] In summary, existing chemotherapy drug delivery devices have significant shortcomings in dealing with patient movement and in accurately controlling drug flow. There is an urgent need to develop a new chemotherapy drug delivery device that can effectively solve the above problems and reduce the risk of drug extravasation. Utility Model Content

[0005] According to an embodiment of this utility model, an anti-extravasation chemotherapy drug delivery device is provided. This addresses the technical problems existing in the prior art described above.

[0006] In a first aspect, an anti-extravasation chemotherapy delivery device is provided.

[0007] The extravasation-proof chemotherapy delivery device includes a housing, a positioning component, a connecting mechanism, an adjustment mechanism, an injection tube, a first tube body, a second tube body, and a needle.

[0008] The two sides of the box are respectively connected to the first tube and the second tube. The first tube is connected to the injection tube, and the second tube is connected to the needle. The box is connected to the positioning component through the connecting mechanism. The positioning component can be fixed on the patient's arm. The adjustment mechanism is provided on the box and is used to adjust the flow rate of the liquid medicine passing through the box.

[0009] Preferably, the positioning component includes a rubber band, a positioning sleeve, and a slot;

[0010] One end of the rubber band is connected to the positioning sleeve, the slot is machined on the positioning sleeve, and the other end of the rubber band can pass through the slot on the positioning sleeve.

[0011] Preferably, the positioning component further includes a plurality of positioning protrusions and positioning holes;

[0012] Multiple positioning protrusions are connected to the rubber band, and positioning holes are machined on one side of the positioning protrusions. The size of the positioning protrusions is larger than that of the positioning holes.

[0013] Preferably, the connecting mechanism includes a first plate, a second plate, a rotating plate, a protrusion, an arc-shaped plate, two round holes, a positioning post, and a notch;

[0014] The first plate is attached to the inner side of the rubber strip, the first plate is connected to the positioning post, the positioning post passes through the rubber strip and the second plate, the second plate is attached to the rubber strip, the rotating plate is rotatably connected to the second plate, the protrusion is connected to the rotating plate, the arc plate is connected to the second plate, two circular holes are machined on the arc plate, the notch is machined on the positioning post, the rotating plate can move in the notch, and the protrusion is set in one of the circular holes.

[0015] Preferably, the connecting mechanism further includes a rubber ring, which is connected to the second plate.

[0016] Preferably, the adjusting mechanism includes a handle, an outer cylinder, a cylinder body, a partition, a stop block, and a connecting rod;

[0017] The handle is connected to the cylinder, the cylinder is connected to the partition, the cylinder is connected to the stop block via the connecting rod, the stop block is slidably connected to the box body and the outer cylinder respectively, and the cylinder is slidably connected to the outer cylinder.

[0018] Preferably, the adjustment mechanism further includes a pressing rod, a partition, a connecting rod, a back plate, a trapezoidal plate, a wheel, a hole, multiple limiting holes, a plug rod, and a sliding rod;

[0019] The pressing rod passes through the handle and the cylinder, and also passes through a partition fixed to the inner wall of the cylinder. The pressing rod is connected to the trapezoidal plate via the connecting rod. The trapezoidal plate contacts the wheel. The wheel is rotatably connected to the insert rod. The hole is machined on the cylinder. Multiple limiting holes are machined on the outer cylinder. The insert rod can pass through the limiting hole and the outer cylinder. The insert rod is connected to the slide rod. The slide rod passes through the back plate. The back plate is connected to the partition.

[0020] Preferably, the adjusting mechanism further includes a spring;

[0021] The spring is sleeved on the slide rod, and the two ends of the spring are respectively connected to the back plate and the insert rod.

[0022] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0023] 1. The present invention provides an anti-extravasation chemotherapy administration device, which fixes the patient's arm by setting a positioning component, thereby preventing the patient from moving at will during the administration process, ensuring the stability of the entire administration process, and avoiding the risk of extravasation.

[0024] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0025] The above and other features, advantages, and aspects of the various embodiments of the present invention will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein:

[0026] Figure 1 A schematic diagram of the connection structure of an anti-extravasation chemotherapy delivery device according to an embodiment of the present invention is shown;

[0027] Figure 2 An exploded view of an anti-extravasation chemotherapy delivery device according to an embodiment of the present invention is shown;

[0028] Figure 3 A schematic diagram of the connection structure of the connection mechanism of the anti-extravasation chemotherapy drug delivery device according to an embodiment of the present invention is shown;

[0029] Figure 4 A schematic diagram of the connection structure of the first plate, the second plate, and the rubber ring of the anti-extravasation chemotherapy drug delivery device according to an embodiment of the present invention is shown.

[0030] Figure 5 A schematic diagram of the connection structure of the box body, the second tube body, and the first tube body of the anti-extravasation chemotherapy drug delivery device according to an embodiment of the present invention is shown;

[0031] Figure 6 A schematic diagram of the connection structure of the adjustment mechanism of the anti-extravasation chemotherapy drug delivery device according to an embodiment of the present invention is shown;

[0032] Figure 7 A schematic diagram of the connection structure of the spring, the orifice, and the connecting rod of the anti-extravasation chemotherapy drug delivery device according to an embodiment of the present invention is shown.

[0033] Figure 8 A schematic diagram of the connection structure of the connecting rod, trapezoidal plate, and wheel of the anti-extravasation chemotherapy drug delivery device according to an embodiment of the present invention is shown.

[0034] The attached figures are labeled as follows:

[0035] 1-Box body, 11-Limiting hole, 2-Positioning component, 201-Positioning protrusion, 202-Positioning sleeve, 203-Slot, 204-Positioning hole, 205-Rubber band, 3-Scale, 4-Adjusting mechanism, 401-Handle, 402-Cylinder body, 403-Pressure rod, 404-Baffle, 405-Stop block, 406-Back plate, 407-Spring, 408-Hole body, 409-Connecting rod, 410-Outer cylinder, 411 - Limiting hole, 412- Connecting rod, 413- Trapezoidal plate, 414- Round wheel, 415- Insert rod, 416- Slide rod, 5- Connecting mechanism, 501- First plate, 502- Second plate, 503- Rubber ring, 504- Positioning post, 505- Rotating plate, 506- Arc plate, 507- Protrusion, 508- Round hole, 509- Notch, 6- Second tube, 7- Needle, 8- Injection tube, 9- First tube. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0037] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0038] like Figures 1 to 8As shown, this anti-extravasation chemotherapy delivery device includes a housing 1, a positioning component 2, a connecting mechanism 5, an adjusting mechanism 4, an injection tube 8, a first tube 9, a second tube 6, and a needle 7. The adjusting mechanism 4 is located on the housing 1 and is used to adjust the flow rate of the medication passing through the housing 1. The positioning component 2 can be fixed to the patient's arm. The two sides of the housing 1 are connected to the first tube 9 and the second tube 6, respectively. The first tube 9 is connected to the injection tube 8, which has graduations 3 to facilitate medical personnel in controlling the actual dosage. The second tube 6 is connected to the needle 7. The housing 1 is connected to the positioning component 2 via the connecting mechanism 5.

[0039] In actual use, medical staff first inject the chemotherapy drug into the injection tube 8. The drug enters the box 1 through the first tube 9, and then enters the patient's body through the second tube 6 and needle 7. By setting up the positioning component 2, the connecting mechanism 5, and the adjusting mechanism 4, the stability of the entire drug delivery process can be ensured, avoiding the risk of extravasation.

[0040] In this embodiment, the positioning component 2 includes a rubber band 205, a positioning sleeve 202, and a slot 203. One end of the rubber band 205 is connected to the positioning sleeve 202, the slot 203 is machined on the positioning sleeve 202, and the other end of the rubber band 205 can pass through the slot 203 on the positioning sleeve 202. The shape of the slot 203 is the same as the shape of the rubber band 205.

[0041] In actual use, medical staff wrap the rubber band 205 around the patient's arm, and then pass the other end of the rubber band 205 through the slot 203. The length of the rubber band 205 passing through the slot 203 is adjusted according to the thickness of the patient's arm so that the positioning component 2 can be firmly fixed on the patient's arm, preventing the delivery device from shifting during use and preventing extravasation.

[0042] In this embodiment, the positioning component 2 further includes a plurality of positioning protrusions 201 and positioning holes 204. The plurality of positioning protrusions 201 are connected to the rubber belt 205, and the positioning holes 204 are machined on one side of the positioning protrusions 201. The size of the positioning protrusions 201 is larger than that of the positioning holes 204 to prevent the positioning protrusions 201 from disengaging from the positioning holes 204.

[0043] In actual use, after the rubber band 205 is adjusted by passing through the slot 203, one of the positioning protrusions 201 can be passed through the positioning hole 204 on the rubber band 205. Since the size of the positioning protrusion 201 is larger than that of the positioning hole 204, it can prevent the positioning hole 204 from separating from the positioning protrusion 201, further improving the stability of the positioning component 2 fixed on the patient's arm and ensuring that the drug delivery device is always in the accurate position throughout the chemotherapy administration process.

[0044] In this embodiment, the connecting mechanism 5 includes a first plate 501, a second plate 502, a rotating plate 505, a protrusion 507, an arc-shaped plate 506, two circular holes 508, a positioning post 504, and a notch 509. The first plate 501 is attached to the inner side of the rubber band 205 and is connected to the positioning post 504. The positioning post 504 passes through the rubber band 205 and the second plate 502 and can slide relative to the second plate 502 and the rubber band 205. The second plate 502 is attached to the rubber band 205, and the first plate 501 and the second plate 502 clamp the rubber band 205. The rotating plate 505 is rotatably connected to the second plate 502 via a bearing. The protrusion 507 is connected to the rotating plate 505, the arc plate 506 is connected to the second plate 502, two round holes 508 are machined on the arc plate 506, and the notch 509 is machined on the positioning post 504. The rotating plate 505 can move within the notch 509.

[0045] In actual use, after the positioning component 2 is fixed to the patient's arm, the connecting mechanism 5 is responsible for connecting the box 1 to the positioning component 2. The first plate 501 and the second plate 502 cooperate with the positioning post 504 to clamp the rubber band 205, ensuring a firm connection. At this time, the positioning post 504 is fixed on the first plate 501, passes through the second plate 502 and the rubber band 205, and protrudes a portion of the positioning post 504 from the second plate 502. The rotating plate 505 can move within the notch 509. When it is necessary to position the positioning post 504, the rotating plate 505 can be rotated. At this time, the rotating plate 505 moves into the interior of the notch 509, and the rotating plate 505 fits tightly with the notch 509 to prevent shaking, thus achieving the connection of the box 1. Furthermore, a protrusion 507 is provided on the rotating plate 505, and two round holes 508 matching the shape of the protrusion 507 are provided on the arc plate 506. When the protrusion 507 is engaged in one of the round holes 508, the rotating plate 505 is positioned inside the notch 509 to limit the positioning post 504. When the protrusion 507 is engaged in the other round hole 508, the rotating plate 505 is separated from the notch 509. By providing the protrusion 507 and the two round holes 508, the connection and disconnection states of the connecting mechanism 5 can be positioned to prevent the device from falling off during wear. The protrusion 507 can be made of rubber.

[0046] In this embodiment, the connecting mechanism 5 also includes a rubber ring 503, which is connected to the second plate 502.

[0047] In actual use, the rubber ring 503 serves as a buffer and seal. When the connecting mechanism 5 is fixed on the patient's arm, the rubber ring 503 contacts the patient's skin, which can relieve the pressure that the connecting parts may cause to the skin and improve the patient's wearing comfort.

[0048] In this embodiment, the adjusting mechanism 4 includes a handle 401, an outer cylinder 410, a cylinder body 402, a partition 404, a stop block 405, and a connecting rod 409. The handle 401 is connected to the cylinder body 402, the cylinder body 402 is connected to the partition 404, and the cylinder body 402 is connected to the stop block 405 via the connecting rod 409. The stop block 405 is slidably connected to both the box body 1 and the outer cylinder 410, and can move inside both the box body 1 and the outer cylinder 410. Adjusting the vertical position of the stop block 405 regulates the flow rate of the liquid medicine through the box body 1. The cylinder body 402 is slidably connected to the outer cylinder 410 and can slide inside the outer cylinder 410.

[0049] In actual use, medical staff control the adjustment mechanism 4 by pulling the handle 401 up and down. When the handle 401 is pulled, the cylinder 402 connected to the handle 401 slides inside the outer cylinder 410. The cylinder 402 drives the stop 405 to slide between the box 1 and the outer cylinder 410 via the connecting rod 409. The change in the position of the stop 405 changes the size of the channel through which the medicine flows through the box 1, thereby adjusting the flow rate of the medicine.

[0050] In this embodiment, the adjustment mechanism 4 further includes a pressing rod 403, a partition plate 404, a connecting rod 412, a back plate 406, a trapezoidal plate 413, a wheel 414, a hole 408, multiple limiting holes 411, an insert rod 415, and a sliding rod 416. The pressing rod 403 passes through the handle 401 and the cylinder 402, and also passes through the partition plate 404 fixed to the inner wall of the cylinder 402. The pressing rod 403 is connected to the trapezoidal plate 413 via the connecting rod 412. The trapezoidal plate 413 contacts the wheel 414, and the contact between the trapezoidal plate 413 and the wheel 414 reduces the friction between the wheel 414 and the insert rod 415. The wheel 414 is rotatably connected to the insert rod 415. The hole 408 is machined on the cylinder 402, and the multiple limiting holes 411 are machined on the outer cylinder 410 at equal intervals. The insertion rod 415 can pass through the limiting hole 411 and the outer cylinder 410, and the shape of the insertion rod 415 matches that of the limiting hole 411 and the outer cylinder 410. The insertion rod 415 is connected to the slide rod 416, which passes through the back plate 406, and the back plate 406 is connected to the partition plate 404.

[0051] In practical use, when medical staff need to adjust the flow rate of the medication, they can press down on the pressing lever 403. The pressing lever 403 moves the trapezoidal plate 413 via the connecting rod 412. The trapezoidal plate 413 pushes the wheel 414 to rotate, thereby causing the insertion rod 415 to move. At this time, the insertion rod 415 disengages from the limiting hole 411, and then the pressing lever 403 can be pulled up or down. The insertion rod 415 can pass through the limiting holes 411 at different positions as needed, thereby locking the cylinder 402 at different positions, thus controlling the position of the stop block 405 and adjusting the flow rate of the medication. The sliding rod 416 and the back plate 406 serve as auxiliary positioning and support to ensure the stable movement of the insertion rod 415.

[0052] In this embodiment, the adjusting mechanism 4 further includes a spring 407 sleeved on the slide rod 416. The two ends of the spring 407 are connected to the back plate 406 and the insertion rod 415, respectively.

[0053] In practical use, spring 407 provides elastic restoring force for insert rod 415. When medical staff press the pressing rod 403 to move insert rod 415, releasing the pressing rod 403 will automatically reset insert rod 415, facilitating the next flow adjustment operation. At the same time, the elastic force of spring 407 also maintains a certain fastening force on insert rod 415 within the limiting hole 411, preventing accidental displacement of insert rod 415 due to external vibrations or other factors, and ensuring the stability and reliability of the adjustment mechanism 4 in regulating the flow of the medicine.

[0054] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A chemotherapy delivery device for preventing extravasation, characterized in that, It includes a box body (1), a positioning component (2), a connecting mechanism (5), an adjusting mechanism (4), an injection tube (8), a first tube body (9), a second tube body (6), and a needle (7); The two sides of the box (1) are connected to the first tube (9) and the second tube (6) respectively. The first tube (9) is connected to the injection tube (8), and the second tube (6) is connected to the needle (7). The box (1) is connected to the positioning component (2) through the connecting mechanism (5). The positioning component (2) can be fixed on the patient's arm. The adjustment mechanism (4) is set on the box (1) and is used to adjust the flow rate of the liquid medicine passing through the box (1).

2. The anti-extravasation chemotherapy delivery device according to claim 1, characterized in that, The positioning component (2) includes a rubber band (205), a positioning sleeve (202), and a slot (203); One end of the rubber band (205) is connected to the positioning sleeve (202), the slot (203) is machined on the positioning sleeve (202), and the other end of the rubber band (205) can pass through the slot (203) on the positioning sleeve (202).

3. The anti-extravasation chemotherapy delivery device according to claim 2, characterized in that, The positioning component (2) also includes a plurality of positioning protrusions (201) and positioning holes (204). Multiple positioning protrusions (201) are connected to the rubber band (205), and positioning holes (204) are machined on one side of the positioning protrusions (201). The size of the positioning protrusions (201) is larger than that of the positioning holes (204).

4. The anti-extravasation chemotherapy delivery device according to claim 2, characterized in that, The connecting mechanism (5) includes a first plate (501), a second plate (502), a rotating plate (505), a protrusion (507), an arc plate (506), two round holes (508), a positioning post (504), and a notch (509). The first plate (501) is attached to the inner side of the rubber strip (205), the first plate (501) is connected to the positioning post (504), the positioning post (504) passes through the rubber strip (205) and the second plate (502), the second plate (502) is attached to the rubber strip (205), the rotating plate (505) is rotatably connected to the second plate (502), the protrusion (507) is connected to the rotating plate (505), the arc plate (506) is connected to the second plate (502), two circular holes (508) are machined on the arc plate (506), the notch (509) is machined on the positioning post (504), the rotating plate (505) can move in the notch (509), and the protrusion (507) is set in one of the circular holes (508).

5. The anti-extravasation chemotherapy delivery device according to claim 4, characterized in that, The connecting mechanism (5) further includes a rubber ring (503), which is connected to the second plate (502).

6. The anti-extravasation chemotherapy delivery device according to claim 1, characterized in that, The adjustment mechanism (4) includes a handle (401), an outer cylinder (410), a cylinder body (402), a partition (404), a stop block (405), and a connecting rod (409). The handle (401) is connected to the cylinder (402), the cylinder (402) is connected to the partition (404), the cylinder (402) is connected to the stop block (405) through the connecting rod (409), the stop block (405) is slidably connected to the box body (1) and the outer cylinder (410) respectively, and the cylinder (402) is slidably connected to the outer cylinder (410).

7. The anti-extravasation chemotherapy delivery device according to claim 6, characterized in that, The adjustment mechanism (4) also includes a pressing rod (403), a partition (404), a connecting rod (412), a back plate (406), a trapezoidal plate (413), a wheel (414), a hole (408), multiple limiting holes (411), a plug rod (415), and a slide rod (416). The pressing rod (403) passes through the handle (401) and the cylinder (402). The pressing rod (403) also passes through the partition (404) fixed to the inner wall of the cylinder (402). The pressing rod (403) is connected to the trapezoidal plate (413) via the connecting rod (412). The trapezoidal plate (413) contacts the wheel (414). The wheel (414) is rotatably connected to the insert rod (415). The hole (408) is machined on the cylinder (402), and the plurality of limiting holes (411) are machined on the outer cylinder (410). The insert rod (415) can pass through the limiting hole (411) and the outer cylinder (410). The insert rod (415) is connected to the slide rod (416). The slide rod (416) passes through the back plate (406). The back plate (406) is connected to the partition plate (404).

8. The anti-extravasation chemotherapy delivery device according to claim 7, characterized in that, The adjustment mechanism (4) also includes a spring (407); The spring (407) is sleeved on the slide rod (416), and the two ends of the spring (407) are respectively connected to the back plate (406) and the insert rod (415).

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