Infusion port needle insertion and extraction assist device with high precision

Abstract

The invention discloses a high-precision transfusion harbor needle inserting and pulling assisting device which comprises a longitudinal sliding support, a supporting plate, a needle body clamping part and a harbor body positioning module. The needle body clamping part pushes a pushing piece to drive a movable toothed bar to enable a gear to rotate through a gear and toothed bar transmission structure, synchronous opening and closing of a clamping piece are achieved, the central axis of a puncture needle and a port body needle inlet hole are accurately aligned, the problem of puncture angle deviation caused by traditional bare-handed holding is solved, and the needle body clamping part is suitable for a green hand to master the puncture angle. When the needle is withdrawn, a disposable sterile rubber block with anti-slip lines is embedded in the chuck, the puncture needle is stably clamped and prevented from slipping, and a spring reset mechanism realizes quick operation of the clamping piece; the port body positioning module is connected with a movable part in an inserted mode through a fixed part and combined with an arc-shaped rubber pad, double positioning of visualization and physical limiting is achieved, and the success rate of first-time puncture is increased. The detachable supporting plate can adapt to different implantation positions, the puncture depth is controlled by lifting the screw rod, and the pricking injury risk is reduced by pulling out the needle at a constant speed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a high-precision infusion port needle insertion and extraction assistant. Background Art

[0002] Infusion port: A totally implantable venous access device (TIVAD) consisting of an implantable component in the body and an external operating component. Implantable components: including injection seat and catheter In vitro operation components: using a special non-destructive needle A special non-destructive needle is used to vertically puncture the injection seat diaphragm to form a venous channel for infusion of various drugs, nutritional support therapy, blood transfusion, venous blood collection, etc.

[0003] However, clinical practice presents significant challenges: the port diameter is only 20-30mm, and the existing "three-finger, four-finger positioning method" requires palpating the edge to determine the puncture center. This method is highly dependent on the medical staff's feel, especially affected by individual fingertip sensitivity, which can easily cause the needle insertion angle to deviate from the ideal vertical angle. The resulting multiple punctures not only increase the patient's pain threshold but also may cause complications such as damage to the tissue surrounding the port and diaphragm fibrosis, making the operation particularly difficult for elderly or obese patients.

[0004] Furthermore, when removing the needle, the port exerts significant friction against the needle body. This can lead to a loss of control due to the recoil, resulting in a scratch on the left hand holding the port. According to statistics, needlestick injuries caused by needle removal by medical staff account for over 30% of occupational exposure incidents, and the risk is particularly high when operating on patients with infectious diseases such as syphilis, hepatitis B, and HIV.

[0005] Traditional auxiliary needle removal tools are mostly made of disposable plastic, cannot be sterilized under high pressure, have high consumable costs, and cause medical waste. Summary of the Invention

[0006] The technical problem addressed by the present invention is to overcome the shortcomings of the existing technology by providing a highly precise port needle insertion and removal aid. This device addresses the existing issues of insufficient precision, inconvenient operation, and potential harm to patients during port needle insertion and removal. This aid enables highly precise port needle insertion and removal, reducing operational difficulty for medical personnel, improving work efficiency, and reducing pain and complications for patients.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: The present invention provides a high-precision infusion port needle insertion and removal aid, comprising a longitudinal sliding bracket and a support plate. The bottom and back of the longitudinal sliding bracket are detachably connected to the support plate via bolts or snaps. The bottom and top of the middle area of the surface of the longitudinal sliding bracket are respectively provided with a notch and a sliding groove, and the notch is spaced apart from the sliding groove. A translation plate is slidably embedded in the internal sliding clip of the sliding groove. A lifting screw is penetrated by the internal thread of the translation plate. The top end of the lifting screw penetrates to the top of the longitudinal sliding bracket. A spherical bearing is provided at the bottom end of the lifting screw. The front surface of the translation plate is connected to a connecting block, and the front surface of the connecting block is connected to a needle body clamping portion, and the needle body clamping portion clamps the butterfly wing portion of the puncture needle to achieve smooth needle insertion; A port body positioning module is provided on the front side of the bottom end of the longitudinal sliding bracket, and the port body positioning module is used to locate the position of the port body to ensure the accuracy of the needle insertion position.

[0008] As a preferred technical solution of the present invention, the needle body clamping part includes a movable shell, and the movable shell is fixedly connected to the connecting block. The interior of the movable shell is a hollow structure, and an opening is provided at the bottom. A positioning slide rod is provided in the middle of the rear side of the inner wall of the movable shell. The positioning slide rod is externally slidably connected to a movable gear rod. Both sides of the movable gear rod are provided with teeth, and a gear is meshed with the teeth. The gear is movably installed in the inner cavity of the movable shell through a rotating rod, and the outer periphery of the gear is connected to a relatively arranged clamping member.

[0009] As a preferred technical solution of the present invention, the interior of the clamping head of the clamping member is a hollow structure and is embedded with a rubber block, and the outer side of the rubber block is provided with anti-slip grooves, and elastic pressing self-locking parts are provided between the clamping members.

[0010] As a preferred technical solution of the present invention, a window is opened on the front end surface of the movable shell, a vertical rod is embedded in the inside of the window, a pusher is slidably sleeved on the outer periphery of the vertical rod, one end of the pusher is fixedly connected to the movable gear rod, and a spring is also sleeved on the outer periphery of the vertical rod, and the spring is located at the bottom end of the pusher.

[0011] As a preferred technical solution of the present invention, the port body positioning module includes a fixed part and a movable part, the fixed part is fixedly connected to the bottom end of the longitudinal sliding bracket, the interiors of the fixed part and the movable part are both arc-shaped hollow structures, a plug-in part is provided on one side of the movable part, and a socket matching the plug-in part is provided on one side of the fixed part, the plug-in part is inserted into the socket to form an interference fit, and a needle hole is opened at the center after the fixed part and the movable part are combined.

[0012] As a preferred technical solution of the present invention, arc-shaped rubber pads having the same size as their inner surfaces are embedded in the interiors of the fixed part and the movable part.

[0013] As a preferred technical solution of the present invention, the support plate is in the shape of a flat plate or an arc-shaped plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses the gear and rack transmission structure of the needle body clamping part to push the pushing member to drive the movable rack to rotate the gear, so that the clamping member opens and closes synchronously, thereby achieving precise alignment of the central axis of the puncture needle and the needle entrance hole of the port body, solving the angle deviation problem of traditional hand-held puncture, and is particularly suitable for novice medical staff to quickly master the puncture angle.

[0015] 2. The present invention achieves stable clamping of the puncture needle when removing the needle by embedding a disposable sterile rubber block with anti-slip grooves in the clamping head, avoiding the needle body from slipping due to insufficient friction. At the same time, the rubber block is discarded after a single use, blocking the cross-contamination path between the puncture needle and the clamping part.

[0016] 3. The present invention uses a spring reset mechanism on the periphery of the pusher. After pressing the pusher, the spring is compressed to store potential energy, and when released, it automatically resets to drive the clamping member to clamp, thereby realizing the convenient operation of quickly releasing and clamping the clamping member.

[0017] 4. The present invention utilizes the fixed and movable parts of the port body positioning module to form a combined needle hole that reduces the error in puncturing the port body diaphragm, achieving dual precise positioning using visualization and physical limitation, thereby improving the success rate of the first puncture and reducing the pain and tissue damage caused by repeated punctures.

[0018] 5. The present invention embeds a detachable, disposable, sterile curved rubber pad inside the fixed part and the movable part, which not only provides a positioning and anti-slip effect, but also reduces the risk of metal parts pressuring the skin through the soft material. At the same time, it is discarded after a single use to avoid bacterial growth and cross infection in the positioning area of the port body.

[0019] 6. The present invention provides a detachable support plate, which can be replaced with a flat plate or a curved plate according to the implantation position of the infusion port, so as to better fit the body curve and improve the stability of the assistive device placement.

[0020] 7. The present invention can accurately control the puncture depth by rotating the lifting screw, avoiding excessive insertion of the needle and damage to the infusion port, blood vessels or tissues. At the same time, when the needle is removed, the lifting screw can lift the needle body at a uniform speed, eliminating the rebound force impact of traditional violent needle removal, effectively reducing the risk of needlestick injuries for medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic structural diagram of the needle body clamping portion of the present invention; Figure 3 is a cross-sectional view of the needle body clamping portion of the present invention; Figure 4 is a side sectional view of the mobile housing of the present invention; Figure 5 This is a schematic diagram of the disassembly of the port body positioning module of the present invention; Figure 6 is a schematic diagram of the longitudinal sliding bracket of the present invention; In the figure: 1. Longitudinal sliding bracket; 2. Support plate; 11. Notch; 12. Sliding groove; 13. Translation plate; 14. Lifting screw; 15. Spherical bearing; 16. Connecting block; 3. Needle body clamping part; 4. Port body positioning module; 31. Moving shell; 32. Positioning slide bar; 33. Moving gear rod; 34. Gear; 35. Clamping part; 36. Rubber block; 37. Elastic press self-locking part; 311. Window; 38. Vertical rod; 39. Pushing part; 310. Spring; 41. Fixing part; 42. Movable part; 43. Connecting part; 44. Needle inlet hole; 45. Arc-shaped rubber pad. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Example 1 like Figure 1-6 As shown, the present invention provides a high-precision infusion port needle insertion and extraction aid, comprising a longitudinal sliding bracket 1 and a support plate 2. The bottom back of the longitudinal sliding bracket 1 is detachably connected to the support plate 2 by bolts or buckles. The bottom and top of the middle area of the surface of the longitudinal sliding bracket 1 are respectively provided with a notch 11 and a sliding groove 12, and the notch 11 is spaced apart from the sliding groove 12. A translation plate 13 is inserted into the internal sliding card of the sliding groove 12. The internal thread of the translation plate 13 is penetrated by a lifting screw 14. The top end of the lifting screw 14 extends to the top of the longitudinal sliding bracket 1. The bottom end of the lifting screw 14 is provided with a spherical bearing 15. The front surface of the translation plate 13 is connected to a connecting block 16, and the front surface of the connecting block 16 is connected to a needle clamping portion 3, and the needle clamping portion 3 clamps the butterfly wing portion of the puncture needle to achieve smooth needle insertion; A port body positioning module 4 is provided on the front side of the bottom end of the longitudinal sliding bracket 1 , and the port body positioning module 4 is used to locate the position of the port body to ensure the accuracy of the needle insertion position.

[0024] Furthermore, the needle body clamping part 3 includes a movable shell 31, and the movable shell 31 is fixedly connected to the connecting block 16. The interior of the movable shell 31 is a hollow structure, and an opening is provided at the bottom. A positioning slide rod 32 is provided in the middle of the rear side of the inner wall of the movable shell 31, and the positioning slide rod 32 is slidably connected to a movable gear rod 33 on the outside. Both sides of the movable gear rod 33 are provided with teeth, and a gear 34 is meshed with the teeth. The gear 34 is movably installed in the inner cavity of the movable shell 31 through a rotating rod, and the outer periphery of the gear 34 is connected to a relatively arranged clamping member 35.

[0025] When the movable gear rod 33 moves up and down along the positioning slide rod 32, it drives the gears 34 on both sides through the teeth on both sides. The rotation of the gear 34 drives the clamping part 35 to swing, so that the clamping part can be opened and closed to clamp the puncture needle.

[0026] Furthermore, the interior of the clamping head of the clamping member 35 is a hollow structure, and a rubber block 36 is embedded therein, and the outer side of the rubber block 36 is provided with anti-slip grooves, and an elastic pressing self-locking member 37 is provided between the clamping members 35.

[0027] The rubber block 36 is in an independent sterile package and should be removed from the package before use to avoid contact contamination. It should be discarded as medical waste after use and should not be reused. The rubber block 36 contacts the butterfly wing portion of the puncture needle to provide sufficient friction without damaging the puncture needle.

[0028] Furthermore, a window 311 is opened on the front end surface of the movable shell 31, and a vertical rod 38 is embedded inside the window 311. A pusher 39 is slidably sleeved on the outer periphery of the vertical rod 38. One end of the pusher 39 is fixedly connected to the movable gear rod 33. A spring 310 is also sleeved on the outer periphery of the vertical rod 38, and the spring 310 is located at the bottom end of the pusher 39.

[0029] As the pusher 39 moves, it drives the gear rod 33, thereby controlling the opening and closing of the clamping member 35. Furthermore, due to the presence of the spring 310, the pusher 39 is always positioned at the top of the window 311, and the gear rod 33 is also positioned upward. Therefore, when the pusher 39 is pressed downward and the clamping member 35 is opened, the spring 310 pushes the pusher 39 back when the clamping member 35 is released, quickly resetting the clamping member 35 and achieving the desired clamping effect.

[0030] Furthermore, the port body positioning module 4 includes a fixed part 41 and a movable part 42. The fixed part 41 is fixedly connected to the bottom end of the longitudinal sliding bracket 1. The interiors of the fixed part 41 and the movable part 42 are both arc-shaped hollow structures. A plug-in part 43 is provided on one side of the movable part 42, and a socket matching the plug-in part 43 is provided on one side of the fixed part 41. The plug-in part 43 is inserted into the socket to form an interference fit. A needle hole 44 is opened at the center after the fixed part 41 and the movable part 42 are combined.

[0031] The movable part 42 is inserted into the fixed part 41 to form an interference fit, which makes the connection tight and will not be easily loosened. At the same time, the easy-to-detach structure is more convenient for operation and disinfection.

[0032] Furthermore, arc-shaped rubber pads 45 having the same size as the inner surfaces of the fixed member 41 and the movable member 42 are embedded in the interior of the fixed member 41 and the movable member 42 .

[0033] The curved rubber pad 45 is packaged in a separate, sterile package. It is removed from its packaging and inserted into the fixed component 41 and movable component 42. After use, it is removed and disposed of as medical waste. A new sterile pad must be replaced with each operation. The outer surface of the curved rubber pad 45 fits in contact with the inner surfaces of the fixed component 41 and movable component 42. When closed, it forms a curved cover that stably covers the infusion port, providing a positioning effect.

[0034] Furthermore, the supporting plate 2 is in the shape of a flat plate or an arc-shaped plate.

[0035] Flat plates are suitable for chest wall ports, curved plates are suitable for arm ports, and different types of support plates can be replaced according to different positions.

[0036] Specifically, preparation before use: Different support plates 2 are used depending on the implant location of the infusion port. For chest wall ports, a flat support plate 2 is used; for arm ports, a curved support plate 2 is used. Different support plates 2 are used for different implant locations and are secured to the longitudinal sliding bracket 1 with bolts or clips to ensure a consistent fit with the patient's skin curves.

[0037] Take out a new arc-shaped rubber pad 45 from the sterile package and insert it into the fixed part 41 and the movable part 42 of the port body positioning module 4 to ensure that it fits tightly and is not contaminated.

[0038] Open the clamping piece 35 of the needle clamping portion 3, take out a new rubber block 36 from the sterile package, and insert it into the clamping head of the clamping piece 35, ensuring that the anti-slip grooves face outwards.

[0039] When inserting the needle: Assembly: Insert movable member 42 into fixed member 41 through connector 43, closing curved rubber pad 45 to form a curved cover structure that covers the infusion port. Align needle inlet 44 with the center of the port. Rotate lifting screw 14 to raise translation plate 13, adjusting needle holder 3 to its highest position.

[0040] To secure the puncture needle: Open the elastic self-locking member 37 and press the pusher 39 downward, causing it to move downward along the vertical rod 38. This pusher 39 simultaneously drives the movable gear rod 33 downward, which in turn rotates the gear 34, which in turn drives the clamping member 35 outward. As the pusher 39 presses downward, it also compresses the spring 310 below. After placing the butterfly wings of the puncture needle between the rubber blocks 36 at the clamping head, release the pusher 39. The spring 310 rebounds, pushing the pusher 39 back into place. This in turn pushes the clamping member 35 back into place, thereby securing the puncture needle. Swing the butterfly wings of the puncture needle to adjust the needle tip's angle, aligning it with the needle insertion hole 44. Finally, firmly pinch the outside of the clamping member 35, causing the rubber blocks 36 to compress the puncture needle, providing sufficient clamping force. Simultaneously, the elastic self-locking member 37 on the outside of the clamping member 35 returns to its original position and locks.

[0041] Finally, place the auxiliary device on the infusion port, with the port positioning module 4 pressed against the port. Remove the needle cap from the puncture needle. Rotate the lifting screw 14 to move the translation plate 13 downward within the sliding slot 12. This in turn drives the connecting block 16, which in turn drives the needle clamp 3 downward. The puncture needle is then smoothly inserted downward, passing through the needle entry hole 44 and into the infusion port. This completes the needle insertion.

[0042] When removing the needle: After replacing the new sterile rubber block 36 and the arc-shaped rubber pad 15. Rotate the lifting screw 14 to drive the translation plate 13 to rise, and adjust the needle body clamping part 3 to the lowest position. After pulling out the movable part 42 of the port body positioning module 4, press the fixed part 41 on the upper side of the infusion port. Then clamp the clamping part 35 on the wing butterfly of the puncture needle and lock it. (The operating principle of the clamping part of the puncture needle here is the same as the needle insertion part mentioned above, so it will not be repeated here). Finally, insert the movable part 42 back into the fixed part 41, press the support plate 2 with your left hand, and rotate the lifting screw 14 with your right hand to drive the needle body clamping part 3 to move upward, so that the puncture needle can be smoothly detached from the infusion port.

[0043] After use, the movable part 42 is removed, the used arc-shaped rubber pad 45 is taken out, and placed together with the rubber block 36 in the clamping part 35 into a medical waste bag for disposal as infectious waste.

[0044] The metal parts such as the longitudinal sliding bracket 1, the support plate 2, and the needle clamping part 3 are wiped with a chlorine-containing disinfectant, placed in an autoclave (134°C, 30 minutes) for disinfection, and stored in a sterile cabinet after drying.

[0045] The next time the sterile curved rubber pad 45 and the rubber block 36 are used, they must be replaced with new ones to ensure aseptic operation requirements.

[0046] The present invention uses the gear and rack transmission structure of the needle body clamping part 3 to push the pushing member 39 to drive the movable rack 33 and the gear 34 to rotate, so that the clamping member 35 is opened or clamped, thereby achieving stable clamping and angle adjustment of the puncture needle; a rubber block 36 with anti-slip grooves is embedded in the clamping head of the clamping member 35 to increase the friction with the butterfly wing part of the puncture needle, thereby preventing the needle body from slipping when the needle is pulled out; and a spring 310 is provided on the outer periphery of the pushing member 39, and the spring can be automatically reset after being released after pressing the pushing member 39, thereby achieving convenient operation of quickly releasing and clamping the clamping member 35.

[0047] In summary, the present invention has the following effects: 1. Through the gear and rack transmission structure of the needle body clamping part 3, the pushing member 39 drives the movable gear rod 33 to rotate the gear 34, so that the clamping member 35 opens and closes synchronously, achieving precise alignment of the central axis of the puncture needle and the needle entrance hole 44 of the port body, solving the angle deviation problem of traditional hand-held puncture, which is especially suitable for novice medical staff to quickly master the puncture angle.

[0048] 2. By embedding a disposable sterile rubber block 36 with anti-slip grooves in the clamping head of the clamping member 35, the puncture needle is stably clamped when the needle is removed, avoiding the needle body from slipping due to insufficient friction. At the same time, the rubber block 36 is discarded after a single use, blocking the cross-contamination path between the puncture needle and the clamping member 35.

[0049] 3. Through the reset mechanism of the spring 310 on the outer periphery of the pusher 39, the spring 310 is compressed to store potential energy after pressing the pusher 39, and automatically resets when released to drive the clamping member 35 to clamp, thereby realizing the convenient operation of quickly releasing and clamping the clamping member.

[0050] 4. By plugging and matching the fixed part 41 and the movable part 42 of the port body positioning module 4, the needle entry hole 44 formed after the merger reduces the error with the port body puncture septum, realizes the dual precise positioning of visualization and physical limit, improves the success rate of the first puncture, and reduces the pain and tissue damage caused by repeated punctures to patients.

[0051] 5. By embedding a detachable, disposable, sterile arc-shaped rubber pad 45 inside the fixed part 41 and the movable part 42, it not only provides a positioning and anti-slip effect, but also reduces the risk of metal parts pressuring the skin through the soft material. At the same time, it is discarded after a single use to avoid bacterial growth and cross infection in the positioning area of the port body.

[0052] 6. By setting up a detachable support plate 2, the flat plate or curved plate can be replaced according to the implantation position of the infusion port to better fit the body curve and improve the stability of the assistive device placement.

[0053] 7. The puncture depth can be precisely controlled by rotating the lifting screw 14 to avoid excessive insertion of the needle and damage to the infusion port, blood vessels or tissues. At the same time, when the needle is removed, the lifting screw 14 can lift the needle body at a uniform speed to eliminate the rebound force impact of traditional violent needle removal, effectively reducing the risk of needlestick injuries to medical staff.

[0054] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A high-precision infusion port needle insertion and extraction aid, comprising a longitudinal sliding bracket (1) and a support plate (2), wherein the bottom back of the longitudinal sliding bracket (1) and the support plate (2) are detachably connected by bolts or buckles, and is characterized in that: The bottom and top of the middle area of the surface of the longitudinal sliding bracket (1) are respectively provided with a notch (11) and a sliding groove (12), and the notch (11) and the sliding groove (12) are separated by a gap, and the internal sliding card of the sliding groove (12) is embedded with a translation plate (13), and the internal thread of the translation plate (13) is penetrated by a lifting screw (14), and the top end of the lifting screw (14) is penetrated to the top of the longitudinal sliding bracket (1), and the bottom end of the lifting screw (14) is provided with a spherical bearing (15); The front surface of the translation plate (13) is connected to a connecting block (16), and the front surface of the connecting block (16) is connected to a needle body clamping portion (3), and the needle body clamping portion (3) clamps the butterfly wing portion of the puncture needle to achieve smooth needle insertion; A port body positioning module (4) is provided on the front side of the bottom end of the longitudinal sliding bracket (1), and the port body positioning module (4) is used to locate the port body position to ensure the accuracy of the needle insertion position.

2. The high-precision infusion port needle insertion and removal aid according to claim 1, characterized in that: The needle body clamping portion (3) includes a movable shell (31), and the movable shell (31) is fixedly connected to the connecting block (16). The interior of the movable shell (31) is a hollow structure, and an opening is provided at the bottom. A positioning slide bar (32) is provided in the middle of the rear side of the inner wall of the movable shell (31). The positioning slide bar (32) is externally slidably connected to a movable gear rod (33). Both sides of the movable gear rod (33) are provided with teeth, and a gear (34) is meshed with the teeth. The gear (34) is movably installed in the inner cavity of the movable shell (31) through a rotating rod, and the outer periphery of the gear (34) is connected to a relatively provided clamping member (35).

3. The high-precision infusion port needle insertion and removal aid according to claim 2, characterized in that: The interior of the clamping head of the clamping member (35) is a hollow structure, and a rubber block (36) is embedded therein, and the outer side of the rubber block (36) is provided with anti-slip grooves, and an elastic pressing self-locking member (37) is provided between the clamping members (35).

4. The high-precision infusion port needle insertion and removal aid according to claim 3, characterized in that: A window (311) is formed on the front surface of the movable housing (31), a vertical rod (38) is embedded in the interior of the window (311), a pusher (39) is slidably sleeved on the outer periphery of the vertical rod (38), one end of the pusher (39) is fixedly connected to the movable gear rod (33), and a spring (310) is sleeved on the outer periphery of the vertical rod (38), and the spring (310) is located at the bottom end of the pusher (39).

5. The high-precision infusion port needle insertion and removal aid according to claim 1, characterized in that: The port body positioning module (4) includes a fixed part (41) and a movable part (42), wherein the fixed part (41) is fixedly connected to the bottom end of the longitudinal sliding bracket (1), and the interiors of the fixed part (41) and the movable part (42) are both arc-shaped hollow structures. A plug-in part (43) is provided on one side of the movable part (42), and a socket matching the plug-in part (43) is provided on one side of the fixed part (41). The plug-in part (43) is inserted into the socket to form an interference fit, and a needle hole (44) is opened at the center of the fixed part (41) and the movable part (42) after they are combined.

6. The high-precision infusion port needle insertion and removal aid according to claim 5, characterized in that: The interiors of the fixed part (41) and the movable part (42) are both embedded with arc-shaped rubber pads (45) having the same size as their inner surfaces.

7. A high-precision infusion port needle insertion and removal aid according to any one of claims 1 to 6, characterized in that: The support plate (2) is in the shape of a flat plate or an arc-shaped plate.

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