Needle withdrawing auxiliary device for infusion port

Abstract

The utility model discloses an infusion port needle withdrawing auxiliary device, and belongs to the technical field of medical instruments, the infusion port needle withdrawing auxiliary device comprises a clamping piece, a frame body and two pressing parts arranged at the bottom of the frame body, the two pressing parts are arranged at intervals in the width direction of the frame body, the frame body is provided with a working guide rail in the height direction of the frame body, and the clamping piece is in sliding connection with the working guide rail; an anti-falling part and a non-return part are arranged on the working guide rail in the length direction at intervals, the anti-falling part can limit the clamping piece to be away from the pressing part along the working guide rail, the non-return part is arranged between the anti-falling part and the pressing part, and the non-return part is connected with the working guide rail through an elastic part; when the elastic part is in the natural state, the non-return part is located at the natural position and located on the movement path of the clamping piece. When the clamping piece moves towards the anti-falling part and moves towards the anti-falling part through the non-return part, the clamping piece enables the non-return part to move, enter the position between the non-return part and the anti-falling part and be limited between the non-return part and the anti-falling part, and therefore the possibility of damage caused by uncontrollable actions generated in the needle pulling process is reduced.

Description

Technical Field

[0001] The present application belongs to the field of medical device technology, and specifically relates to an infusion port needle removal auxiliary device. Background Art

[0002] An infusion port is a closed infusion device that is completely implanted in the human body. It includes a catheter portion with the tip located in the superior vena cava and an injection seat implanted subcutaneously. A butterfly needle of the infusion port is usually used to insert into the injection seat to deliver the drug.

[0003] When removing the needle, the medical staff needs to remove the needle with one hand and hold the injection seat with the other hand to prevent the injection seat from moving the skin outward when the needle is removed. When the medical staff removes the needle, due to the material properties of the injection seat, the butterfly-wing needle is not easy to separate from the injection seat. The medical staff needs to use greater force to separate the butterfly-wing needle from the injection seat. For medical staff who are insufficient in needle removal experience or have less strength, it is difficult to control the needle removal trajectory. If the tilt angle is too large when removing the needle, the butterfly-wing needle can easily damage the diaphragm of the injection seat and cause leakage. On the other hand, if too much force is used when removing the needle, the medical staff's hand used to remove the needle can easily fall back, which can cause the butterfly-wing needle to easily scratch and / or stab the medical staff's hand pressing the injection seat. The butterfly-wing needle may also injure the patient due to the large falling motion. Utility Model Content

[0004] In order to limit the needle removal action of medical staff, reduce the degree of the butterfly-wing needle falling back when the needle is removed, and prevent medical staff from injuring themselves or patients by excessive force, the present application provides an infusion port needle removal auxiliary device.

[0005] The invention relates to an infusion port needle removal auxiliary device, which comprises a clamping member, a frame, and two pressing parts arranged at the bottom of the frame, the two pressing parts are arranged at intervals along the width direction of the frame, and the frame is provided with a working guide rail along its height direction, and the clamping member is slidably connected to the working guide rail; the working guide rail is provided with an anti-slipping part and a non-return part at intervals along its length direction, the anti-slipping part can limit the clamping member from moving away from the pressing part along the working guide rail, the non-return part is arranged between the anti-slipping part and the pressing part, and the non-return part is connected to the working guide rail through an elastic part; when the elastic part is in a natural state, the non-return part is located in a natural position, which is located in the movement path of the clamping member; when the clamping member passes through the non-return part and moves toward the anti-slipping part, the clamping member squeezes the non-return part, and the non-return part reaches the avoidance position from the natural position, and when the clamping member located between the anti-slipping part and the non-return part moves toward the pressing part, the non-return part moves from the natural position to the locking position to limit the movement of the clamping member toward the pressing part.

[0006] In one embodiment of the present application, the non-return portion or the clamping member is provided with a driving inclined surface, and along the direction of the pressing portion pointing to the anti-slip portion, the driving inclined surface points in the direction of the movement path of the clamping member in the avoidance position, and gradually moves away from the avoidance position; when the clamping member moves toward the anti-slip portion, the driving inclined surface enters between the non-return portion and the clamping member, and under the action of the driving inclined surface, the non-return portion can move from the locking position to the avoidance position.

[0007] In one embodiment of the present application, the infusion port needle removal auxiliary device also includes a spring component, which includes a base and an elastic deformation sheet, the fixed end of the deformation sheet is connected to the base, the free end of the deformation sheet is a check portion, and the sheet body between the free end and the fixed end is an elastic portion.

[0008] In one embodiment of the present application, the base is plug-fitted into the working guide rail.

[0009] In one embodiment of the present application, the locking position and the natural position are the same position, the check portion is slidably connected to the working guide rail, and is also connected to the working guide rail through an elastic portion, and the check portion can move in a direction perpendicular to the working guide rail to move between the locking position and the avoidance position.

[0010] In one embodiment of the present application, the non-return portion is pivotally connected to the working guide rail and is also connected to the working guide rail through an elastic portion. The non-return portion can rotate in a plane parallel to the working guide rail to swing between an avoidance position and a locking position.

[0011] In one embodiment of the present application, the clamping member includes a sliding portion slidably connected to the working guide rail, a rigid plate rigidly connected to the sliding portion, and a flexible portion connected to the rigid plate. After the flexible portion is bent, it is arranged opposite to the rigid plate.

[0012] In one embodiment of the present application, the rigid plate and the flexible portion are provided with anti-slip layers. After the flexible portion is bent, the anti-slip layer provided on the rigid plate and the anti-slip layer provided on the flexible portion are arranged relative to each other.

[0013] In one embodiment of the present application, the pressing portion, the anti-slip portion and the working guide rail are detachably connected.

[0014] In one embodiment of the present application, the frame is further provided with a grip portion.

[0015] The present application has at least the following beneficial effects:

[0016] 1. When in use, the user can place the needle tip of the butterfly wing needle between the two pressing parts. The user presses the pressing part against the patient's skin above the injection seat with one hand, so that the working guide rail is perpendicular to the patient's skin. Then the user pinches the wing of the butterfly wing needle through the clamping piece with the other hand, and drives the butterfly wing needle to move along the extension direction of the working guide rail through the clamping piece until the clamping piece reaches the anti-detachment part. The anti-detachment part restricts the butterfly wing needle from continuing to move along the working guide rail away from the patient's skin, thereby avoiding the user from using excessive force when pulling out the needle, causing the butterfly wing needle to move uncontrollably.

[0017] 2. The non-return portion can prevent the clamping member between the non-return portion and the anti-slip portion from moving toward the pressing portion, preventing the butterfly wing needle connected to the clamping member from approaching the patient's skin or the hand of the medical staff, and preventing the butterfly wing needle from causing harm to the patient or the medical staff.

[0018] 3. By moving the clamping part along the working guide rail, the movement trajectory of the butterfly wing needle connected to the clamping part can be controlled, so that the butterfly wing needle can move in a direction perpendicular to the patient's skin, standardizing the needle removal action. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an exemplary implementation of the present application;

[0020] Figure 2 It is a structural schematic diagram of an exemplary implementation method when the clamping member in the present application is connected to the butterfly wing needle;

[0021] Figure 3 It is a structural schematic diagram of an exemplary embodiment of the clamping member in the present application when it moves toward the anti-slip portion and is about to pass through the non-return portion;

[0022] Figure 4 It is a structural schematic diagram of an exemplary implementation mode when the clamping member in the present application passes through the non-return portion;

[0023] Figure 5 It is a structural schematic diagram of an exemplary embodiment when the clamping member in the present application is located between the non-return portion and the anti-slip portion;

[0024] Figure 6 It is a structural schematic diagram of an exemplary implementation method when the butterfly wing needle in the present application is pulled out;

[0025] Figure 7 It is a structural schematic diagram of an exemplary implementation method when the non-return member in the present application is slidably connected with the working guide rail;

[0026] Figure 8 It is a structural schematic diagram of an exemplary implementation method when the non-return part is rotatably connected with the working guide rail in the present application;

[0027] Fig. 9 It is a structural schematic diagram of an exemplary implementation of the spring member, the anti-dropping portion, and the gripping portion in the present application;

[0028] Fig.10 It is a structural schematic diagram of an illustrative implementation of the present application when used in conjunction with a butterfly-wing needle provided with a stab-proof structure.

[0029] In the figure:

[0030] 101, frame; 102, working guide rail; 103, pressing part; 104, anti-slip part; 105, gripping part;

[0031] 201, non-return portion; 202, elastic portion; 203, driving inclined surface; 204, base; 205, deformation sheet;

[0032] 301, clamping member; 302, rigid plate; 303, flexible portion;

[0033] 401. Butterfly wing needle. DETAILED DESCRIPTION

[0034] In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific implementation methods of the present application are now described with reference to the accompanying drawings. The same reference numerals in the drawings represent components with the same structure or similar structures but the same functions.

[0035] In this document, “exemplary” means “serving as an example, instance or illustration”, and any diagram or implementation described in this document as “exemplary” should not be interpreted as a more preferred or more advantageous technical solution.

[0036] In order to simplify the drawings, only the parts related to the present application are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked.

[0037] See also Figures 1 to 10 Understand this application.

[0038] See also Figure 1, an infusion port needle removal auxiliary device, comprising a clamping member 301, a frame 101, and two pressing portions 103 arranged at the bottom of the frame 101, the two pressing portions 103 are arranged at intervals along the width direction of the frame 101, the frame 101 is provided with a working guide rail 102 along its height direction, and the clamping member 301 is slidably connected to the working guide rail 102; the working guide rail 102 is provided with an anti-slip portion 104 and a non-return portion 201 at intervals along its length direction, the anti-slip portion 104 can limit the clamping member 301 from moving away from the pressing portion 103 along the working guide rail 102, the non-return portion 201 is arranged between the anti-slip portion 104 and the pressing portion 103, and the non-return portion 201 is connected to the working guide rail 102 through an elastic portion 202; the elastic portion 202 When in the natural state, the non-return portion 201 is located in the natural position, which is located in the movement path of the clamping member 301; when the clamping member 301 passes through the non-return portion 201 and moves toward the anti-slip portion 104, the clamping member 301 squeezes the non-return portion 201, and the non-return portion 201 moves from the natural position to the avoidance position, and at the same time, the elastic portion 202 undergoes elastic deformation. After the clamping member 301 passes through the non-return portion 201, the non-return portion 201 returns to the natural position under the action of the elastic force of the elastic portion 202. When the clamping member 301 located between the anti-slip portion 104 and the non-return portion 201 moves toward the pressing portion 103, the non-return portion 201 reaches the locking position from the natural position, and the non-return portion 201 limits the movement of the clamping member 301 toward the pressing portion 103.

[0039] See also Figure 1 , Figure 2 In one embodiment of the present application, the infusion port needle removal auxiliary device also includes a spring component, which includes a base 204 and an elastic deformation sheet 205, the fixed end of the deformation sheet 205 is connected to the base 204, the free end of the deformation sheet 205 is a check portion 201, and the sheet body between the free end and the fixed end is an elastic portion 202.

[0040] See also Figures 1 to 3 When in use, the user can place the needle head of the butterfly wing needle 401 between the two pressing parts 103, and the user presses the pressing part 103 against the patient's skin above the injection seat with one hand, so that the working guide rail 102 is perpendicular to the patient's skin, and then the user pinches the wing of the butterfly wing needle 401 with the clamping piece 301 with the other hand, and drives the butterfly wing needle 401 to move along the extension direction of the working guide rail 102 through the clamping piece 301. When the clamping piece 301 is connected to the wing of the butterfly wing needle 401, the medical staff can pinch the clamping piece 301 and the wing of the butterfly wing needle 401 at the same time, so that both move along the working guide rail 102. When the clamping piece 301 moves from the pressing part 103 to the anti-detachment part 104, when the clamping piece 301 passes through the non-return part 201, it will give a force to the non-return part 201, so that the elastic part 202 is elastically deformed, and the non-return part 201 is squeezed from the natural position to the avoidance position, see Figure 4, leaving the movement path of the clamping member 301, the clamping member 301 can pass through the non-return portion 201 and enter between the non-return portion 201 and the anti-slip portion 104, and the anti-slip portion 104 restricts the clamping member 301 from continuing to move away from the pressing portion 103, thereby preventing the medical staff from exerting too much force and causing the butterfly needle 401 to produce uncontrollable movement; see Figure 5 When the clamping member 301 passes through the non-return portion 201, the non-return portion 201 returns to the natural position under the action of the elastic portion 202. When the clamping member 301 moves toward the pressing portion 103, the clamping member 301 drives the non-return portion 201 located at the natural position to move toward the locking position. The elastic force generated by the deformation of the elastic portion 202 limits the clamping member 301 from moving toward the pressing portion 103, thereby limiting the clamping member 301 between the anti-slip portion 104 and the non-return portion 201. Alternatively, due to the influence of the angle between the deformation sheet 205 and the moving direction of the clamping member 301, the non-return portion 201 moves toward the pressing portion 103. When the pressing portion 103 moves, the non-return portion 201 in the natural position does not move and can block the clamping member 301 from moving toward the pressing portion 103, so that the natural position and the locking position are the same position. When the medical staff's hand produces an uncontrollable falling action, the non-return portion 201 blocks the clamping member 301 from moving toward the pressing portion 103, thereby preventing the butterfly wing needle 401 connected to the clamping member 301 from moving toward the patient's skin or the medical staff's hand, and preventing the butterfly wing needle 401 from hurting the patient or the medical staff's hand; the clamping member 301 is restricted between the anti-detachment portion 104 and the non-return portion 201, see Figure 6 , so that the butterfly wing needle 401 is in a suitable position. During this process, the working guide rail 102 can limit the movement path of the butterfly wing needle 401, so that the butterfly wing needle 401 can move in a direction perpendicular to the skin, avoiding the butterfly wing needle 401 from damaging the injection seat.

[0041] See also Figure 3 In one embodiment of the present application, the non-return portion 201 or the clamping member 301 is provided with a driving inclined surface 203. The driving inclined surface 203 can be a plane or an arc surface. Along the direction of the pressing portion 103 pointing to the anti-slip portion 104, the driving inclined surface 203 points to the direction of the movement path of the clamping member 301 in the avoidance position and gradually moves away from the avoidance position; when the clamping member 301 moves toward the anti-slip portion 104, the driving inclined surface 203 enters between the non-return portion 201 and the clamping member 301. Under the action of the driving inclined surface 203, the non-return portion 201 can move from the natural position to the avoidance position. See Figures 1 to 4 The deformation piece 205 is tilted and can form a driving inclined surface 203 with the surface in contact with the clamping member 301, so that when the clamping member 301 moves from the pressing portion 103 to the anti-slip portion 104, the clamping member 301 can pass through the non-return portion 201 more smoothly. Of course, the driving inclined surface 203 can also be provided on the clamping member 301, which will not be repeated here.

[0042] In one embodiment of the present application, the base 204 is plugged into the working guide rail 102. On the one hand, it is convenient to separate the spring component from the working guide rail 102, and the spring component can be replaced in time to avoid the elastic effect of the spring component from failing. On the other hand, it is convenient to separately disinfect the spring component and the working guide rail 102 to ensure the disinfection effect.

[0043] Technicians in the technical field to which the present application belongs can understand that the implementation method of the elastic part 202 and the non-return part 201 in the present application is not limited to the above-mentioned integrated spring part method, and other methods can also be used to realize the functions of the elastic part 202 and the non-return part 201, which are described in detail below.

[0044] See also Figure 7 In one embodiment of the present application, the non-return portion 201 is provided with a driving inclined surface 203, the non-return portion 201 is slidably connected to the working guide rail 102, the non-return portion 201 can move in a direction perpendicular to the working guide rail 102 to move between the locking position and the avoidance position, the non-return portion 201 is also connected to the working guide rail 102 through an elastic portion 202, the elastic portion 202 can be an elastic member such as a spring, elastic rubber, etc., and the non-return portion 201 can enter the clamp under the action of the elastic portion 202 The movement path of the holding member 301 reaches the natural position. When the clamping member 301 moves toward the anti-slip portion 104 and passes through the non-return portion 201, the non-return portion 201 is squeezed by the clamping member 301 and moves to the avoidance position. After the clamping member 301 passes through the non-return portion 201, the non-return portion 201 moves back to the natural position under the action of the elastic portion 202. The non-return portion 201 in the natural position can limit the movement of the clamping member 301 toward the pressing portion 103. At this time, the natural position and the locked position are the same position.

[0045] The technicians in the art of this application can understand that the setting method of the non-return portion 201 in this application is not limited to the above method, and other methods can also be used, see Figure 8The non-return portion 201 is pivotally connected to the working guide rail 102 and is also connected to the working guide rail 102 through the elastic portion 202. The non-return portion 201 can rotate in a plane parallel to the working guide rail 102. When the working guide rail 102 is provided with a limiting structure, the locking position and the avoidance position are the same position. The non-return portion 201 abuts against the limiting structure under the action of the elastic portion 202, so that it is located in the locking position and cannot move toward the pressing portion 103. The non-return portion 201 can swing between the avoidance position and the locking position. When the clamping member 301 moves toward the anti-slip portion 104, the clamping member 30 1, the non-return portion 201 rotates to the avoidance position and leaves the movement path of the clamping member 301. At the same time, the elastic portion 202 generates elastic deformation, and the non-return portion 201 can return to the locking position under the action of the elastic portion 202. When the clamping member 301 between the non-return portion 201 and the anti-slip portion 104 moves toward the pressing portion 103, since the working guide rail 102 is provided with a limiting structure, the non-return portion 201 cannot rotate toward the pressing portion 103, so that the non-return portion 201 blocks the clamping member 301 from rotating toward the pressing portion 103, so that the natural position and the locking position at this time are the same position.

[0046] Of course, the rotation of the check portion 201 can also be limited by the elastic force generated by the deformation degree of the elastic portion 202. There is also a natural position between the locking position and the avoidance position. When the check portion 201 is in the natural position, it enters the movement path of the clamping member 301. When the clamping member 301 passes through the check portion 201, the check portion 201 will reach the locking position or the avoidance position. When the check portion 201 reaches the locking position, the elastic portion 202 produces a larger elastic deformation and a larger elastic force due to the movement of the check portion 201 from the natural position to the locking position. The elastic portion 202 limits the movement of the clamping member 301 toward the pressing portion 103 through the check portion 201, which will not be repeated here.

[0047] See also Figure 1 In one embodiment of the present application, the clamping member 301 includes a sliding portion slidably connected to the working guide rail 102, a rigid plate 302 rigidly connected to the sliding portion, and a flexible portion 303 connected to the rigid plate 302. After the flexible portion 303 is bent, it is arranged opposite to the rigid plate 302, and the wing of the butterfly wing needle 401 is arranged between the flexible portion 303 and the rigid plate 302. The clamping member 301 is stably connected to the wing of the butterfly wing needle 401 through the rigid plate 302 and the flexible portion 303.

[0048] In one embodiment of the present application, the rigid plate 302 and the flexible portion 303 are provided with anti-slip layers. After the flexible portion 303 is bent, the anti-slip layer provided on the rigid plate 302 and the anti-slip layer provided on the flexible portion 303 are arranged relative to each other, so as to facilitate medical staff to better hold the wing of the butterfly wing needle 401 through the clamping member 301. Of course, the connection between the clamping member 301 and the wing of the butterfly wing needle 401 can also be achieved by other means.

[0049] See also Fig. 9 In one embodiment of the present application, the pressing portion 103, the anti-detachment portion 104 and the working guide rail 102 are detachably connected, so as to facilitate separation of the various components for disinfection.

[0050] See also Fig. 9 In one embodiment of the present application, the frame 101 is also provided with a gripping portion 105, which is convenient for medical staff to use the gripping portion 105 to fix the frame 101. At the same time, the gripping portion 105 is a baffle. When the butterfly wing needle 401 moves between the gripping portions 105, the gripping portion 105 can play a protective role to prevent the butterfly wing needle 401 from injuring the hands of medical staff.

[0051] Those skilled in the art of the present application can understand that the butterfly wing needle 401 used in the present application is not limited to the ordinary butterfly wing needle 401, but can also be a special butterfly wing needle 401 with an anti-stab structure, see Fig.10 The pressing portion 103 presses the wing of the anti-puncture structure against the skin, and the working guide rail 102 can regulate the movement of the butterfly wing needle 401 to prevent the butterfly wing needle 401 from damaging the injection seat.

[0052] It should be understood that although this specification is described according to various implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0053] The series of detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present application. They are not intended to limit the scope of protection of the present application. Any equivalent implementation scheme or changes that do not deviate from the technical spirit of the present application, such as combination, division or repetition of features, should be included in the scope of protection of the present application.

Claims

1. An infusion port needle removal auxiliary device, characterized in that: It comprises a clamping member, a frame, and two pressing parts arranged at the bottom of the frame, the two pressing parts are arranged at intervals along the width direction of the frame, the frame is provided with a working guide rail along its height direction, and the clamping member is slidably connected with the working guide rail; The working guide rail is provided with an anti-slip portion and a non-return portion at intervals along its length direction, the anti-slip portion can limit the clamping member from moving away from the pressing portion along the working guide rail, the non-return portion is provided between the anti-slip portion and the pressing portion, and the non-return portion is connected to the working guide rail through an elastic portion; When the elastic portion is in a natural state, the non-return portion is located in a natural position, which is located in the movement path of the clamping member; When the clamping member passes through the non-return portion and moves toward the anti-slip portion, the clamping member squeezes the non-return portion, and the non-return portion moves from a natural position to an avoidance position. When the clamping member located between the anti-slip portion and the non-return portion moves toward the pressing portion, the non-return portion moves from a natural position to a locking position to limit the movement of the clamping member toward the pressing portion.

2. The infusion port needle removal auxiliary device according to claim 1, characterized in that: The non-return portion or the clamping member is provided with a driving inclined surface, which is directed along the direction of the pressing portion to the anti-slip portion, and the driving inclined surface is directed in the direction of the movement path of the clamping member at the avoidance position, and gradually moves away from the avoidance position; When the clamping member moves toward the anti-slip portion, the driving inclined surface enters between the non-return portion and the clamping member, and under the action of the driving inclined surface, the non-return portion can move from the locking position to the avoidance position.

3. The infusion port needle removal auxiliary device according to claim 2, characterized in that: The infusion port needle removal auxiliary device also includes a spring component, which includes a base and an elastic deformation sheet, the fixed end of the deformation sheet is connected to the base, the free end of the deformation sheet is the check portion, and the sheet body between the free end and the fixed end is the elastic portion.

4. The infusion port needle removal auxiliary device according to claim 3, characterized in that: The base is plug-fitted with the working guide rail.

5. The infusion port needle removal auxiliary device according to claim 2, characterized in that: The locking position and the natural position are the same position, the non-return portion is slidably connected to the working guide rail, and is also connected to the working guide rail through the elastic portion, and the non-return portion can move in a direction perpendicular to the working guide rail to move between the locking position and the avoidance position.

6. The infusion port needle removal auxiliary device according to claim 1, characterized in that: The non-return portion is pivotally connected to the working guide rail and is also connected to the working guide rail through the elastic portion. The non-return portion can rotate in a plane parallel to the working guide rail to swing between an avoidance position and a locking position.

7. The infusion port needle removal auxiliary device according to claim 1, characterized in that: The clamping member includes a sliding part slidably connected to the working guide rail, a rigid plate rigidly connected to the sliding part, and a flexible part connected to the rigid plate. After the flexible part is bent, it is arranged opposite to the rigid plate.

8. The infusion port needle removal auxiliary device according to claim 7, characterized in that: The rigid plate and the flexible part are provided with anti-skid layers. After the flexible part is bent, the anti-skid layer provided on the rigid plate and the anti-skid layer provided on the flexible part are arranged opposite to each other.

9. The infusion port needle removal auxiliary device according to claim 1, characterized in that: The pressing portion, the anti-slip portion and the working guide rail are detachably connected.

10. The infusion port needle removal auxiliary device according to claim 1, characterized in that: The frame is also provided with a gripping portion.

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