Infusion port body surface positioner

Abstract

The utility model relates to an infusion port body surface positioner, and belongs to the technical field of medical instruments. The body surface positioner is arranged outside the body and is used for detecting an in-vivo injection seat which is embedded in the body and is provided with ferromagnetic metal; the body surface positioner comprises a bracket, a magnetic needle rotating frame arranged on the bracket and a movable magnetic needle which is arranged in the magnetic needle rotating frame and is used for pointing to the ferromagnetic metal in the in-vivo injection seat; the support is further provided with a skin attaching face used for moving on the skin surface of a patient. The body surface positioning device is convenient to use, low in manufacturing cost of a single body, sensitive in detection, capable of pointing out the optimal puncturing part for medical staff and used for puncturing the saucer wing needle into the in-vivo infusion port. The technical problems that in the using process of an existing infusion port, a disc wing needle is low in one-time insertion success rate, deviates from the center position and enters the port body by mistake can be solved.

Description

Technical Field

[0001] The utility model relates to a body surface locator for an infusion port, belonging to the technical field of medical equipment. Background Art

[0002] The infusion port, also known as an implantable intravenous drug delivery device, is a closed infusion device that is completely implanted in the human body. The infusion port mainly includes the catheter part located in the central vein and the infusion seat buried under the skin. The implantation of the infusion port provides a safe and reliable venous channel for patients who need long-term infusion and chemotherapy. It can not only directly deliver various high-concentration and highly stimulating drugs to the central vein to prevent peripheral phlebitis and vascular sclerosis, but also effectively avoid local tissue necrosis caused by fluid extravasation. It is a new technology for clinical intravenous infusion systems in recent years. The advantages of the infusion port are: 1. Protect blood vessels: The infusion port can be implanted in the body for a long time, which can avoid repeated venous punctures, thereby protecting blood vessels and reducing puncture injuries. 2. Reduce patient pain: The presence of the infusion port reduces the number of venous punctures, which can not only reduce the pain of patients, but also improve the work efficiency of medical staff. 3. Reduce the risk of infection: The infusion port is buried under the skin and will not be exposed to the external environment, so it can reduce the risk of infection at the puncture site. 4. Fast infusion speed: The infusion port has a larger catheter diameter, which can quickly infuse a large amount of fluid and can work more quickly for situations that require emergency treatment. Due to the above advantages, the infusion port has been widely used in clinical practice.

[0003] The infusion port system in a broad sense consists of two parts, a completely implanted part and an external use part. The implanted part consists of an injection seat (infusion seat) and a connected catheter; the external use part is mainly a disc-wing needle, which is connected to the infusion strap channel. Among them, the injection seat is a puncture injection platform, the bottom of the interior is a hemispherical cavity the size of a one-yuan coin or even smaller, and the shape is a submarine-like three-dimensional structure. The connected catheter is used to be implanted in the central venous lumen. There are various models of varying thicknesses, and the material of the catheter is usually polyurethane and silicone; the disc-wing needle is a special puncture needle with a turning point at the tip and a long bevel on the needle tip, which can effectively reduce the damage of the puncture needle to the puncture diaphragm of the injection seat, and maximize the safe use of the implantable drug delivery device. At present, the main difficulty in the use of the infusion port is how to accurately insert the disc-wing needle into the injection seat. In actual operation, medical staff need to palpate and locate the puncture septum. With one hand, find the position of the injection seat of the infusion port, and make a triangle with the thumb, index finger and middle finger to arch the infusion port; with the other hand, hold the non-destructive needle and vertically pierce the puncture septum from the center of the three fingers to the bottom of the reservoir base (see attached). Figure 1); this often requires medical staff to have sufficient experience. At present, in clinical practice, the success rate of one-time insertion of disc-wing needles is often improved by strengthening the technical training of medical staff; there are also devices in the prior art that use magnetic positioning to improve the success rate of puncture, such as the Chinese patent "Magnetic Fully Implantable Intravenous Infusion Port" application number 202222190689.1; but this device changes the internal structure of the existing injection seat, the structure is complex, and the manufacturing cost is high; it increases the economic burden on patients; and the magnetic detection sensitivity is not high, and it cannot point out the best insertion site for medical staff. Therefore, this technical field urgently needs a surface positioning device for inserting an infusion port into the body that is easy to use, has low monomer manufacturing cost, is sensitive to detection, and can point out the best insertion site for medical staff, so as to solve the problem of low one-time insertion success rate of disc-wing needles in the use of existing infusion ports. Utility Model Content

[0004] The purpose of the utility model is to solve the problem of how to obtain a surface positioning device for inserting an infusion port in the body, which is easy to use, has a low monomer manufacturing cost, is sensitive in detection, and can point out the best insertion site for medical personnel, so as to solve the technical problem of the low one-time insertion success rate of the disc wing needle in the existing infusion port during use.

[0005] In order to achieve the purpose of solving the above-mentioned problems, the technical solution adopted by the utility model is to provide an infusion port surface locator, which is arranged outside the body and is used to detect an in vivo injection seat buried in the body; the in vivo injection seat includes a port body with a liquid storage tank, and a ferromagnetic metal is provided in the base of the port body; the surface locator includes a bracket, a magnetic needle rotating frame arranged on the bracket, and a movable magnetic needle arranged in the magnetic needle rotating frame for pointing to the ferromagnetic metal in the port body base; the bracket is provided with a skin fitting surface for moving on the patient's skin surface; corresponding to the skin fitting surface, a magnetic needle rotating frame suitable for the magnetic needle to rotate and point to any point on the skin fitting surface is provided.

[0006] Preferably, the bracket is V-shaped, and comprises a bracket one and a bracket two which are connected together at one end and separated at the other end; the bracket one is provided with a magnetic needle rotating frame, and the bracket two is provided with a skin fitting surface.

[0007] Preferably, the magnetic needle rotating frame comprises a movable outer ring and a movable inner ring arranged in the outer ring; a magnetic needle is arranged in the inner ring, and a virtual central axis is arranged along the axis of the magnetic needle, and the central axis is perpendicular to the plane where the inner ring is located.

[0008] Preferably, a rotating shaft one for the outer ring to rotate is provided along the radial direction of the outer ring, and both ends of the rotating shaft one are movably provided on the bracket one; a rotating shaft two for the inner ring to rotate is provided along the radial direction of the inner ring, and both ends of the rotating shaft two are movably provided on the outer ring; the rotating shaft one and the rotating shaft two are perpendicular.

[0009] Preferably, the inner ring and the outer ring of the magnetic needle rotating frame are arranged on the same plane.

[0010] Preferably, a hollow channel is provided on the skin-fitting surface, and the channel corresponds to the magnetic needle; a cross-shaped protrusion for marking is provided in the channel, and the protrusion protrudes from the skin-fitting surface.

[0011] Preferably, a hollow channel is provided on the skin fitting surface, and the channel corresponds to the magnetic needle; and a return spring for opening and closing activities of the V-shaped bracket is provided at one end where the bracket one and the bracket two are connected.

[0012] Preferably, the ferromagnetic metal is arranged below the liquid storage tank.

[0013] Preferably, the ferromagnetic metal is arranged below the middle portion of the liquid storage tank.

[0014] Preferably, the ferromagnetic metal is iron.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model is easy to use. The nurse only needs to hold the body surface locator of the utility model in one hand and move it on the patient's body surface to know the accurate position of the injection seat in the body.

[0017] 2. The utility model has sensitive detection. The position on the body surface where the magnetic attraction is strongest is pointed by the magnetic needle, which is the exact position of the injection seat in the body, indicating the best insertion position for medical staff.

[0018] 3. The utility model has low manufacturing cost, which is conducive to clinical promotion and application; the handheld surface locator can be used multiple times, and the in vivo injection seat only adds a magnetic metal sheet to the bottom area of ​​the existing in vivo injection seat. Compared with the existing in vivo injection seat, the increased manufacturing difficulty is not high, the material is accessible, and the magnetic metal has a variety of choices, which will not change the overall structure of the infusion port. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the actual operation of inserting an infusion port in clinical practice;

[0020] Figure 2 It is a side view of the body surface locator of Example 1;

[0021] Figure 3 This is a front view of the body surface locator of Example 1;

[0022] Figure 4 It is a top view of the body surface locator of Example 1;

[0023] Figure 5 The body surface locator stereoscopic device of Example 1 Figure 1 ;

[0024] Figure 6 The body surface locator stereoscopic device of Example 1 Figure 2 ;

[0025] Figure 7 The body surface locator stereoscopic device of Example 1 Figure 3 ;

[0026] Figure 8 Schematic diagram of the in vivo injection seat in Example 1 Figure 1 ;

[0027] Fig. 9 Schematic diagram of the in vivo injection seat in Example 1 Figure 2 ;

[0028] Fig.10 It is a side view of the body surface locator of Example 2;

[0029] Fig.11 A top view of the body surface locator of Example 2;

[0030] Fig.12 This is a schematic diagram of the operation of using the body surface locator of Example 1 to leave a cross mark on the patient's skin to pierce the infusion port.

[0031] Figure numerals: 1. Body surface locator; 2. Injection seat; 3. Liquid reservoir; 4. Port body; 5. Base; 6. Bracket; 7. Magnetic needle rotating frame; 8. Magnetic needle; 9. Skin fitting surface; 10. Bracket one; 11. Bracket two; 12. Outer ring; 13. Inner ring; 14. Rotation axis one; 15. Rotation axis two; 16. Channel; 17. Protrusion; 18. Return spring; 19. Magnetic metal; 20. Diaphragm. DETAILED DESCRIPTION

[0032] In order to make the present invention more clearly understood, a preferred embodiment is described in detail with reference to the accompanying drawings as follows:

[0033] like Figure 1-12As shown, the utility model provides an infusion port surface locator 1, which is arranged outside the body and is used to detect an in-vivo injection seat 2 buried in the body. The in-vivo injection seat 2 includes a port body 4 with a liquid storage tank 3, and a ferromagnetic metal 19 is arranged in the base 5 of the port body 4; the surface locator 1 includes a bracket 6, a magnetic needle rotating frame 7 arranged on the bracket 6, and a movable magnetic needle 8 arranged in the magnetic needle rotating frame 7 for pointing to the ferromagnetic metal 19 in the base 5 of the port body 4; the bracket 6 is provided with a skin-fitting surface 9 for moving on the patient's skin surface; and a magnetic needle rotating frame 7 suitable for the magnetic needle 8 to rotate and point to any point on the skin-fitting surface 9 is arranged corresponding to the skin-fitting surface 9. The bracket 6 is V-shaped, including a bracket 1 10 and a bracket 2 11 connected together at one end and separated at the other end; the magnetic needle rotating frame 7 is arranged on the bracket 10, and the skin-fitting surface 9 is arranged on the bracket 2 11. The magnetic needle rotating frame 7 includes a movable outer ring 12 and a movable inner ring 13 arranged in the outer ring 12; a magnetic needle 8 is arranged in the inner ring 13, and a virtual central axis is arranged along the axial direction of the magnetic needle 8, and the central axis is perpendicular to the plane where the inner ring 13 is located. A rotating shaft 14 for the outer ring 12 to rotate is arranged along the radial direction of the outer ring 12, and the two ends of the rotating shaft 14 are movably arranged on the bracket 10; a rotating shaft 2 15 for the inner ring 13 to rotate is arranged along the radial direction of the inner ring 13, and the two ends of the rotating shaft 2 15 are movably arranged on the outer ring 12; the rotating shaft 14 and the rotating shaft 2 15 are perpendicular. The inner ring 13 and the outer ring 12 of the magnetic needle rotating frame 7 are arranged on the same plane. A hollow channel 16 is arranged on the skin-fitting surface 9, and the channel 16 corresponds to the magnetic needle 8; a cross-shaped protrusion 17 for marking is arranged in the channel 16, and the protrusion 17 protrudes from the skin-fitting surface 9.

[0034] In another embodiment, a hollow channel 16 is provided on the skin contact surface 9, and the channel 16 corresponds to the magnetic needle 8; a return spring 18 for opening and closing the V-shaped bracket is provided at one end where the bracket 1 10 and the bracket 2 11 are connected. A movable openable and closable structure is provided between the bracket 1 10 and the bracket 2 11. The cross-shaped protrusion 17 for identification is no longer provided in the channel 16.

[0035] The ferromagnetic metal is arranged below the liquid storage tank 3 .

[0036] Furthermore, the ferromagnetic metal 19 is disposed directly below the middle portion of the liquid storage tank 3 .

[0037] Furthermore, the ferromagnetic metal 19 is an iron sheet.

[0038] Example 1

[0039] like Figure 2-9 , as shown in FIG12 , the utility model provides a V-shaped infusion port body surface locator 1 for medical staff to hold, the body surface locator 1 can move on the surface of the patient's body skin, and is used to detect the internal injection seat 2 buried in the body, and the base 5 of the port body 4 of the internal injection seat 2 is provided with an iron sheet;

[0040] The V-shaped body surface locator 1 comprises a bracket 10 and a bracket 2 11 connected as an integral structure, wherein one end of the bracket 10 and the bracket 2 11 are connected together and the other end is separated;

[0041] A magnetic needle rotating frame 7 is arranged on the bracket 10, and the magnetic needle rotating frame 7 includes a double ring structure on the same plane, namely, a movable outer ring 12 and a movable inner ring 13 sleeved in the outer ring 12; a magnetic needle 8 is arranged in the center of the inner ring 13 and is perpendicular to the plane where the inner ring 13 is located; the magnetic needle 8 is integrated with the inner ring 13 through a plastic structural member; a rotating shaft 2 15 for the self-rotation of the inner ring 13 is arranged along the radial direction of the inner ring 13, and the inner ring 13 can rotate left and right around the rotating shaft 2 15; the two ends of the rotating shaft 2 15 are movably inserted into the inner side wall of the outer ring 12. A rotating shaft 14 for the self-rotation of the outer ring 12 is arranged along the radial direction of the outer ring 12, and the outer ring 12 can rotate in the front and rear directions around the rotating shaft 14, and the two ends of the rotating shaft 14 are movably inserted into the bracket 10; and the rotating shaft 14 and the rotating shaft 2 15 are perpendicular;

[0042] The magnetic needle rotating frame 7 rotates in the front-to-back direction around the rotating axis 14 through the outer ring 12, and at the same time, the inner ring 13 rotates in the left-to-right direction around the rotating axis 2 15, thereby realizing the movement of the magnetic needle rotating frame 7 in the four directions of front, back, left and right, and realizing that the tip of the magnetic needle 8 points to any direction on the lower hemispherical surface.

[0043] The second support 11 is provided with a skin fitting surface 9, which is a contact surface that contacts the patient's body surface skin when the body surface locator 1 moves on the patient's body surface skin.

[0044] The second bracket 11 is provided with a hollow channel 16 , which corresponds to the magnetic needle 8 ; a cross-shaped protrusion 17 for marking is provided in the channel 16 , and the protrusion 17 protrudes downward from the skin fitting surface 9 .

[0045] When the medical staff holds the V-shaped infusion port body surface locator 1 and moves it on the patient's body skin surface, the skin-fitting surface 9 is attached to the patient's skin, and the protrusion 17 also protrudes from the skin-fitting surface 9 and contacts the patient's skin.

[0046] The tip of the magnetic needle 8 points to the position with the highest ferromagnetic intensity on the body surface, that is, to the iron sheet disposed in the base 5 of the injection seat 2 in the body.

[0047] Use of this utility model:

[0048] The medical staff holds the V-shaped infusion port surface locator 1 of Example 1 and moves it on the surface of the patient's skin. The tip of the magnetic needle 8 rotates and points to the direction of the highest ferromagnetic intensity on the body surface, that is, it points to the iron sheet provided in the base 5 of the in-vivo injection seat 2. The body surface locator 1 continues to be moved until the magnetic needle 8 is almost perpendicular to the body surface and the tip of the magnetic needle 8 points to the cross intersection of the cross-shaped protrusions 17. The protrusions 17 are pressed forcefully into the patient's skin surface. The protrusions 17 protruding from the skin fitting surface 9 will leave a cross-shaped mark on the patient's skin. The area below the cross intersection of the cross-shaped mark can be considered to be the center of the liquid reservoir 3 in the port body 4 of the in-vivo injection seat 2. The medical staff uses a disc-wing needle to pierce the cross intersection and pass through the diaphragm 20 at the top of the liquid reservoir 3 to enter the liquid reservoir 3; Fig.12 .

[0049] Example 2

[0050] like Figure 10-11 As shown, the V-shaped body surface locator 1 includes a split bracket 10 and a bracket 2 11; one end of the bracket 10 and the bracket 2 11 are connected together, and the other end is separated; the connecting end of the bracket 10 and the bracket 2 11 is connected together through a return spring 18; there is a movable openable and closable structure between the bracket 10 and the bracket 2 11. Pressing the end of the bracket 10 away from the return spring 18, the separated ends of the bracket 10 and the bracket 2 11 approach each other, similar to the V-shaped body surface locator 1 closing; releasing the bracket 10, the return spring 18 returns to the original state, and the separated ends of the bracket 10 and the bracket 2 11 separate again, similar to the V-shaped body surface locator 1 opening.

[0051] The second bracket 11 is provided with a hollow channel 16 , which corresponds to the magnetic needle 8 ; the channel 16 is no longer provided with a cross-shaped protrusion 17 for marking.

[0052] Use of this utility model:

[0053] The medical staff holds the V-shaped infusion port body surface locator 1 of Example 2 and moves it on the patient's skin surface. The tip of the magnetic needle 8 rotates and points to the direction with the highest ferromagnetic intensity on the body surface, that is, to the iron sheet provided in the base 5 of the injection seat 2 in the body. Continue to move the body surface locator 1 until the magnetic needle 8 is almost perpendicular to the body surface and points to the center of the hollow channel 16; press down the end of the bracket 10 away from the return spring 18, the separated ends of the bracket 10 and the bracket 2 11 approach each other, the tip of the magnetic needle 8 points to the center of the hollow channel 16, and moves downward until the tip of the magnetic needle 8 touches the patient's skin; iodine or other colored liquid (such as red medicine or purple medicine) applied to the tip of the magnetic needle 8 will leave a mark on the patient's skin, and the area below the marked body surface can be considered to be the center position of the liquid storage tank 3 in the port body 4 of the injection seat 2 in the body; stop pressing the bracket 10, the return spring 18 returns to its original state, and the separated ends of the bracket 10 and the bracket 2 11 separate again; the magnetic needle 8 moves up and breaks contact with the skin.

[0054] The body surface locator 1 is removed, and then the medical staff uses a disc-wing needle to pierce the mark left on the patient's skin, and then the needle can pass through the diaphragm 20 of the liquid reservoir 3 and enter the liquid reservoir 3.

[0055] The above is only a preferred embodiment of the utility model, and is not any formal or substantial limitation of the utility model. It should be pointed out that ordinary technicians in this technical field can make some improvements and supplements without departing from the utility model, and these improvements and supplements should also be regarded as the protection scope of the utility model. Any technician familiar with this profession can make some changes, modifications and equivalent changes made by using the technical content disclosed above without departing from the spirit and scope of the utility model, which are all equivalent embodiments of the utility model; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the utility model are still within the scope of the technical solution of the utility model.

Claims

1. A body surface locator for an infusion port, arranged outside the body, for detecting an in-vivo injection seat buried in the body, wherein the in-vivo injection seat comprises a port body with a liquid storage tank, characterized in that: A ferromagnetic metal is provided in the base of the port body; the body surface locator comprises a bracket, a magnetic needle rotating frame provided on the bracket and a movable magnetic needle provided in the magnetic needle rotating frame for pointing to the ferromagnetic metal in the base of the port body; the bracket is provided with a skin fitting surface for moving on the patient's skin surface; a magnetic needle rotating frame suitable for the magnetic needle to rotate and point to any point on the skin fitting surface is provided corresponding to the skin fitting surface.

2. The infusion port body surface locator according to claim 1, characterized in that: The bracket is V-shaped, and comprises a bracket 1 and a bracket 2 which are connected together at one end and separated at the other end; the bracket 1 is provided with a magnetic needle rotating frame, and the bracket 2 is provided with a skin fitting surface.

3. The infusion port body surface locator according to claim 1, characterized in that: The magnetic needle rotating frame comprises a movable outer ring and a movable inner ring arranged in the outer ring; a magnetic needle is arranged in the inner ring, and a virtual central axis is arranged along the axial direction of the magnetic needle, and the central axis is perpendicular to the plane where the inner ring is located.

4. The infusion port body surface locator according to claim 3, characterized in that: A rotating shaft 1 for the outer ring to rotate is provided along the radial direction of the outer ring, and both ends of the rotating shaft 1 are movably provided on the bracket 1; a rotating shaft 2 for the inner ring to rotate is provided along the radial direction of the inner ring, and both ends of the rotating shaft 2 are movably provided on the outer ring; the rotating shaft 1 and the rotating shaft 2 are perpendicular.

5. The infusion port body surface locator according to claim 4, characterized in that: The inner ring and the outer ring of the magnetic needle rotating frame are arranged on the same plane.

6. The infusion port body surface locator according to claim 1, characterized in that: The skin-fitting surface is provided with a hollow channel, which corresponds to the magnetic needle; a cross-shaped protrusion for marking is provided in the channel, and the protrusion protrudes from the skin-fitting surface.

7. The infusion port body surface locator according to claim 2, characterized in that: The skin fitting surface is provided with a hollow channel corresponding to the magnetic needle; one end where the bracket one and the bracket two are connected is provided with a return spring for the opening and closing activities of the V-shaped bracket.

8. The infusion port body surface locator according to claim 1, characterized in that: The ferromagnetic metal is arranged below the liquid storage tank.

9. The infusion port body surface locator according to claim 1, characterized in that: The ferromagnetic metal is arranged below the middle part of the liquid storage tank.

10. The infusion port body surface locator according to claim 1, characterized in that: The ferromagnetic metal is iron.

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