Chemotherapy pump

Abstract

The chemotherapy pump comprises an installation sleeve and a pump body, the interior of the installation sleeve is hollow, the two sides of the installation sleeve are provided with openings, an inner heat insulation layer is arranged in an inner cavity of the installation sleeve, the pump body is arranged in the middle of the inner heat insulation layer in a sleeved mode, and the openings in the two sides of the installation sleeve are provided with a front cover and a rear cover respectively. Binding bands are fixedly connected to the two sides of the mounting sleeve respectively, a first hook-and-loop fastener and a second hook-and-loop fastener which are matched with each other are arranged on the two binding bands respectively, an observation window is formed in the upper side of the mounting sleeve, and an external heat insulation layer is arranged on the lower side of the mounting sleeve; the influence of the human body temperature on the flow speed of the pump body during wearing can be effectively reduced through the arrangement of the inner heat insulation layer of the inner cavity of the mounting sleeve and the outer heat insulation layer of the outer surface, the uniformity of the flow speed of the chemotherapy pump is guaranteed, the pump body can be in a suspended state through the semicircular heat insulation strips, and the heat insulation effect is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemotherapy pumps, and particularly relates to a chemotherapy pump. Background Art

[0002] With the growth of the incidence of tumors, a large number of scientific researches and clinical experiments have proved that continuous intravenous drug administration is an ideal treatment plan, and a chemotherapy pump is the best means to achieve this drug administration method. It does not affect the daily life of patients. The chemotherapy pump is a hollow device. Drugs are injected into the pump body, and there is a catheter at the top of the pump body connected to the peripherally inserted central catheter of the patient; the drugs can enter the blood circulation along the catheter. Chemotherapy pumps are mainly used in the following situations: 1. Advanced primary liver cancer; 2. Metastatic liver cancer; 3. Recurrence after liver cancer surgery or consolidation treatment after liver cancer surgery; 4. Extensive metastasis of esophageal cancer, gastric cancer, pancreatic cancer and intestinal tumors; 5. Lung cancer chemotherapy; 6. Other benign diseases.

[0003] A chemotherapy pump is an extracorporeal portable device that can continuously infuse intravenously. It can control the concentration, speed, dose and time of drug use, can constantly maintain the blood drug concentration of chemotherapy drugs in the body, kill cancer cells to the greatest extent, and also increase the activity of anti-cancer cells, can improve the curative effect, reduce the adverse reactions caused by chemotherapy. Using a chemotherapy pump for continuous chemotherapy, patients can carry it and move around, solving the inconvenience of traditional infusion patients staying in bed for a long time. However, during the use and wearing process of the existing chemotherapy pumps, due to long-term contact with the human body, the temperature of the chemotherapy pump is affected by the human body temperature, resulting in changes in the flow rate of the chemotherapy pump, affecting the use effect, and because the chemotherapy pump needs to be stably worn, long-term compression of the skin is likely to cause discomfort to patients. The chemotherapy pump can maintain the effective blood drug concentration of the drug in the body through a continuous and stable infusion speed. This is crucial for chemotherapy regimens that require maintaining a certain drug level for a long time, such as drugs like 5-FU, which have a short half-life and need continuous infusion to maintain the curative effect. By stably and continuously infusing, the chemotherapy pump can reduce the peak value of the drug concentration in the blood, thereby reducing the toxic effect of chemotherapy drugs on normal cells and reducing the occurrence of gastrointestinal reactions such as nausea and vomiting and other side effects. The uniformity of the infusion of the chemotherapy pump has a significant impact on the treatment effect of chemotherapy drugs.

[0004] Therefore, the present application provides a chemotherapy pump for reducing the influence of the human body temperature on the flow rate of the chemotherapy pump and improving the comfort of patients during the wearing process. Content of the Utility Model

[0005] The utility model provides a chemotherapy pump, aiming to solve the problems pointed out in the above background art.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A chemotherapy pump, comprising: a mounting sleeve and a pump body. The interior of the mounting sleeve is hollow and open at both sides. An internal heat insulation layer is provided in the inner cavity of the mounting sleeve. The pump body is sleeved in the middle of the internal heat insulation layer. The front cover and the rear cover are respectively arranged at the two open ends of the mounting sleeve. Straps are respectively fixedly connected to both sides of the mounting sleeve. A first magic tape and a second magic tape which cooperate with each other are respectively arranged on the two straps. An observation window is opened on the upper side of the mounting sleeve. An external heat insulation layer is provided on the lower side of the mounting sleeve.

[0008] Further, the internal heat insulation layer comprises a plurality of heat insulation strips. The heat insulation strips are semicircular and are evenly distributed along the circumferential side wall of the inner cavity of the mounting sleeve. The external heat insulation layer comprises a fitting part arranged in an arc shape. The fitting part cooperates with the lower part of the mounting sleeve. A plurality of the heat insulation strips are arranged on the lower surface of the fitting part. The surface of the heat insulation strip is a heat insulation layer, and shock-absorbing filler is filled inside.

[0009] Further, the interior of the pump body is hollow. One end of the pump body is provided with an elastic rubber bladder. An outlet pipe and a liquid injection port are arranged on the part of the elastic rubber bladder located outside the pump body. The liquid injection port is used for injecting liquid medicine into the elastic rubber bladder. The outlet pipe is used for outputting liquid medicine from the elastic rubber bladder. A flow control valve is arranged between the outlet pipe and the elastic rubber bladder.

[0010] Further, the cavity between the elastic rubber bladder and the pump body is a pneumatic chamber. A pressure sensor is arranged in the pneumatic chamber. The pressure sensor is arranged adjacent to the elastic rubber bladder. A display screen is arranged on the outer side wall of the pump body. The display screen is used for displaying the reading of the pressure sensor. The display screen corresponds to the observation window.

[0011] Further, a pressurizing hole is arranged at one end of the pump body away from the elastic rubber bladder. A through hole which cooperates with the pressurizing hole is opened in the middle of the rear cover.

[0012] Further, an opening for cooperating with the pump body is opened on the front cover. A fitting part for cooperating with the front cover is arranged at one end of the mounting sleeve. The front cover is threadedly connected to the fitting part.

[0013] Further, an arc-shaped positioning end is arranged at one end of the pump body away from the front cover. A plurality of rear cover shock-absorbing blocks which are evenly distributed along the circumference are arranged on the side of the rear cover adjacent to the pump body. The shapes of the rear cover shock-absorbing blocks are adapted to the shape of the positioning end.

[0014] Compared with the prior art, the utility model has the following technical effects:

[0015] 1. In the chemotherapy pump of the present utility model, the internal heat insulation layer inside the installation sleeve cavity and the external heat insulation layer on the outer surface can effectively reduce the influence of the human body temperature during wearing on the flow rate of the pump body, ensure the uniformity of the flow rate of the chemotherapy pump, and the heat insulation strip arranged in a semi-circular shape can make the pump body in a suspended state, further improving the heat insulation effect; and the shock-absorbing filler filled inside the heat insulation strip can effectively improve the wearing comfort of the chemotherapy pump, reduce the compression on the skin during wearing, and improve the wearing comfort.

[0016] 2. In the chemotherapy pump of the present utility model, through the settings of the display screen and the air pressure sensor, it is convenient for the user to judge the infusion time by observing the reading on the display screen, making the use more convenient and flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an exploded schematic view of a chemotherapy pump of the present utility model;

[0018] Figure 2 is an overall axonometric view of a chemotherapy pump of the present utility model;

[0019] Figure 3 is a front view of a chemotherapy pump of the present utility model;

[0020] Figure 4 is an internal schematic view of the installation sleeve of a chemotherapy pump of the present utility model;

[0021] Figure 5 is an overall cross-sectional view of a chemotherapy pump of the present utility model.

[0022] In the figure: 1. Installation sleeve; 2. Binding strap; 3. First magic tape; 4. Second magic tape; 5. Pump body; 6. Front cover; 7. External heat insulation layer; 8. Internal heat insulation layer; 9. Observation window; 10. Rear cover; 11. Elastic rubber bladder; 12. Liquid outlet pipe; 13. Liquid injection port; 14. Display screen; 15. Fitting part; 16. Rear cover shock-absorbing block; 17. Through hole; 18. Air pressure sensor; 19. Pressurizing hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the purpose, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments of this application and with reference to the accompanying drawings.

[0024] Such as Figures 1 - 3As shown in the figure, a chemotherapy pump includes: a mounting sleeve 1 and a pump body 5. The interior of the mounting sleeve 1 is hollow and open on both sides. An internal heat insulation layer 8 is provided in the inner cavity of the mounting sleeve 1. The pump body 5 is sleeved in the middle of the internal heat insulation layer 8. Front covers 6 and rear covers 10 are respectively provided at the two open ends of the mounting sleeve 1. Straps 2 are fixedly connected to both sides of the mounting sleeve 1. A first magic tape 3 and a second magic tape 4 that cooperate with each other are respectively provided on the two straps 2. An observation window 9 is opened on the upper side of the mounting sleeve 1. An external heat insulation layer 7 is provided on the lower side of the mounting sleeve 1.

[0025] In a specific embodiment, the pump body 5 is fixed in the mounting sleeve 1 through the cooperation of the front cover 6 and the rear cover 10. During use, the patient fixes the chemotherapy pump on the arm through the first magic tape 3 and the second magic tape 4 on the strap 2. Both the first magic tape 3 and the second magic tape 4 are arranged in a long strip shape, and can be flexibly adjusted according to the patient's arm circumference or tightness preference, with a wide adjustment range and high applicability.

[0026] As Figures 1 - 4 shown, the internal heat insulation layer 8 includes a number of heat insulation strips. The heat insulation strips are semicircular and are evenly distributed circumferentially along the inner cavity side wall of the mounting sleeve 1. The external heat insulation layer 7 includes a fitting part arranged in an arc shape. The fitting part cooperates with the lower part of the mounting sleeve 1. A number of the heat insulation strips are provided on the lower surface of the fitting part. The surface of the heat insulation strip is a heat insulation layer, and shock-absorbing filler is filled inside.

[0027] In a specific embodiment, the heat insulation strips are arranged along the length direction of the mounting sleeve 1 and the length direction of the fitting part. Through the semicircular setting of the heat insulation strips, the pump body 5 does not directly contact the mounting sleeve 1. Besides further improving the heat insulation ability, it can also reduce the influence on the pump body 5 when the mounting sleeve 1 is deformed by pressure, ensuring the stability of the infusion flow rate of the pump body 5. The heat insulation strips of the external heat insulation layer 7 can also reduce the pressure of the mounting sleeve 1 on the patient's skin during use and wearing, and improve the comfort of the patient's wearing through the shock-absorbing filler inside the heat insulation strips and the way of expanding the contact area.

[0028] As Figure 5 shown, the interior of the pump body 5 is hollow, and an elastic rubber bladder 11 is provided at one end of the pump body 5. An outlet pipe 12 and a liquid injection port 13 are provided on the part of the elastic rubber bladder 11 located outside the pump body 5. The liquid injection port 13 is used to input liquid medicine into the elastic rubber bladder 11. The outlet pipe 12 is used to output liquid medicine from the elastic rubber bladder 11. A flow control valve is provided between the outlet pipe 12 and the elastic rubber bladder 11.

[0029] Preferably, the pump body 5 is made of a transparent material, which is convenient for directly observing the elastic rubber bladder 11, so as to roughly judge the infusion time.

[0030] As Figure 5 shown, the cavity between the elastic rubber bladder 11 and the pump body 5 is a pneumatic chamber. A pressure sensor 18 is provided in the pneumatic chamber, and the pressure sensor 18 is arranged adjacent to the elastic rubber bladder 11. A display screen 14 is provided on the outer side wall of the pump body 5. The display screen 14 is used to display the reading of the pressure sensor 18, and the display screen 14 corresponds to the observation window 9.

[0031] Working principle: Before use, the liquid medicine is input into the elastic rubber bladder 11 through the liquid injection port 13. During use, due to the self - contraction of the elastic rubber bladder 11 and the pressure in the pneumatic chamber, the liquid medicine in the elastic rubber bladder 11 flows through the flow control valve and then flows out through the liquid outlet pipe 12. As the volume of the elastic rubber bladder 11 changes, the air pressure in the pneumatic chamber changes. The pressure sensor 18 reads the internal air pressure of the pneumatic chamber and displays it through the display screen 14, so that the patient can judge the remaining liquid medicine inside the elastic rubber bladder 11.

[0032] As Figure 5 shown, a pressurizing hole 19 is provided at one end of the pump body 5 away from the elastic rubber bladder 11, and a through - hole 17 matching the pressurizing hole 19 is provided in the middle of the rear cover 10. Through the setting of the pressurizing hole 19, medical staff can flexibly adjust the initial air pressure inside the pneumatic chamber according to different types of liquid medicine to be transported, which is flexible and convenient.

[0033] As Figure 1 and Figure 5 shown, an opening for cooperating with the pump body 5 is provided on the front cover 6. One end of the mounting sleeve 1 is provided with a cooperating portion 15 for cooperating with the front cover 6, and the front cover 6 is threadedly connected to the cooperating portion 15.

[0034] As Figures 4 - 5 shown, an arc - shaped positioning end is provided at one end of the pump body 5 away from the front cover 6. A plurality of rear - cover shock - absorbing blocks 16 evenly distributed along the circumference are provided on one side of the rear cover 10 adjacent to the pump body 5, and the shapes of the rear - cover shock - absorbing blocks 16 are adapted to the shape of the positioning end.

[0035] Through the setting of the rear - cover shock - absorbing blocks 16 and the positioning end of the pump body 5, when the pump body 5 is being installed, after the positioning end contacts the rear - cover shock - absorbing blocks 16, the other end of the pump body 5 extends out of the cooperating portion 15. After the front cover 6 is tightened, the positioning end generates a certain pressure on the rear - cover shock - absorbing blocks 16, causing the rear - cover shock - absorbing blocks 16 to deform to complete the fixation of the pump body 5. Through the above - mentioned method, the pump body 5 has a good shock - absorbing effect.

[0036] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the inventive concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model.

Claims

1. A chemotherapy pump, characterized in that, Comprising: An installation sleeve (1) and a pump body (5), the interior of the installation sleeve (1) is hollow and both sides are open. An internal heat insulation layer (8) is provided in the inner cavity of the installation sleeve (1). The pump body (5) is sleeved in the middle of the internal heat insulation layer (8). Front covers (6) and rear covers (10) are respectively provided at the two open sides of the installation sleeve (1). Straps (2) are fixedly connected to both sides of the installation sleeve (1). A first magic tape (3) and a second magic tape (4) which cooperate with each other are respectively provided on the two straps (2). An observation window (9) is opened on the upper side of the installation sleeve (1), and an external heat insulation layer (7) is provided on the lower side of the installation sleeve (1).

2. The chemotherapy pump according to claim 1, wherein The internal heat insulation layer (8) includes a number of heat insulation strips. The heat insulation strips are semi-circular and are evenly distributed circumferentially along the inner cavity side wall of the installation sleeve (1). The external heat insulation layer (7) includes a fitting part arranged in an arc shape. The fitting part cooperates with the lower part of the installation sleeve (1). A number of the heat insulation strips are provided on the lower surface of the fitting part. The surface of the heat insulation strip is a heat insulation layer, and shock-absorbing filler is filled inside.

3. The chemotherapy pump according to claim 2, characterized in that, The interior of the pump body (5) is hollow, and an elastic rubber bladder (11) is provided at one end of the pump body (5). An outlet pipe (12) and a liquid injection port (13) are provided on the part of the elastic rubber bladder (11) located outside the pump body (5). The liquid injection port (13) is used to input liquid medicine into the elastic rubber bladder (11), and the outlet pipe (12) is used to output liquid medicine from the elastic rubber bladder (11). A flow control valve is provided between the outlet pipe (12) and the elastic rubber bladder (11).

4. The chemotherapy pump according to claim 3, characterized in that, The cavity between the elastic rubber bladder (11) and the pump body (5) is a pneumatic chamber. A pressure sensor (18) is provided in the pneumatic chamber, and the pressure sensor (18) is arranged adjacent to the elastic rubber bladder (11). A display screen (14) is provided on the outer side wall of the pump body (5). The display screen (14) is used to display the reading of the pressure sensor (18), and the display screen (14) corresponds to the observation window (9).

5. The chemotherapy pump according to claim 4, characterized in that, A pressurizing hole (19) is provided at one end of the pump body (5) away from the elastic rubber bladder (11), and a through hole (17) which cooperates with the pressurizing hole (19) is opened in the middle of the rear cover (10).

6. The chemotherapy pump according to claim 5, wherein An opening for cooperating with the pump body (5) is opened on the front cover (6). A fitting part (15) for cooperating with the front cover (6) is provided at one end of the installation sleeve (1). The front cover (6) is threadedly connected to the fitting part (15).

7. The chemotherapy pump according to claim 6, wherein An arc-shaped positioning end is provided at one end of the pump body (5) away from the front cover (6). A number of rear cover shock-absorbing blocks (16) which are evenly distributed along the circumference are provided on the side of the rear cover (10) adjacent to the pump body (5). The rear cover shock-absorbing blocks (16) are adapted to the shape of the positioning end.

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