Removing device of implantable intravenous administration system

Abstract

According to the removing device of the implantable intravenous drug delivery system, the clamping groove used for being matched with the needle head is formed in the positioning base, the positioning protrusion matched with the lower end of the shell is arranged on the upper surface of the positioning base, and the attaching face attached to the skin is arranged on the lower surface of the positioning base. A clamping mechanism used for clamping a needle head is movably arranged in a shell, sliding grooves used for exposing the two sides of the clamping mechanism are formed in the two sides of the shell, and a top cover used for limiting the clamping mechanism to be disengaged upwards is arranged at the top of the shell. According to the removing device of the implantable intravenous administration system, due to the fact that the needle head is located in the shell all the time in the removing process, the risk caused by exposure of the needle head can be effectively avoided, and then the phenomenon that the needle head punctures a patient or medical staff back in the removing process is avoided.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a removal device for an implantable intravenous drug delivery system. Background Art

[0002] Implantable intravenous drug delivery systems provide a safe and reliable intravenous access for patients requiring long-term intravenous infusions, repeated medications, frequent blood draws, and chemotherapy infusions. They reduce the risk of infection and the number of venipunctures. They not only deliver high-concentration, highly irritating drugs directly to the central vein, but also effectively prevent fluid extravasation that could affect venous tissue, further protecting the venous vessels.

[0003] However, when the injection needle of the existing implantable intravenous drug delivery system is removed from the patient's body, the injection needle is tightly connected to the implant base, so the direction of the injection needle removal must be perpendicular to the plane of the implant base. Medical staff need to use great force when performing this operation barehanded, and the arm needs to be retracted to stop the action when pulling out the needle. However, retraction creates the risk of the needle piercing the patient or medical staff. Utility Model Content

[0004] In view of this, an embodiment of the present invention provides a removal device for an implantable intravenous drug delivery system to solve the problem that the injection needle of the existing implantable intravenous drug delivery system is prone to back-piercing the patient or medical staff when being removed from the patient's body.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A removal device for an implantable intravenous drug delivery system, comprising: a positioning base, a shell, a clamping mechanism, and a top cover;

[0007] The positioning base is provided with a slot for cooperating with the needle;

[0008] The upper surface of the positioning base is provided with a positioning protrusion that cooperates with the lower end of the shell, and the lower surface of the positioning base is a fitting surface that fits with the skin;

[0009] The clamping mechanism is movably arranged in the housing, and the clamping mechanism is used to clamp the needle;

[0010] Both sides of the shell are provided with sliding grooves for the exposed sides of the clamping mechanism;

[0011] The top cover is arranged on the top of the shell body and is used to limit the clamping mechanism from escaping upwards.

[0012] Preferably, flexible wings are provided on both sides of the positioning base.

[0013] Preferably, the upper surface of the wing plate is provided with anti-slip grooves.

[0014] Preferably, the clamping mechanism comprises: a first clamping block, a second clamping block, an elastic member and a first rotating shaft;

[0015] A first connecting block is provided on the inner side of the first clamping block, and a second connecting block is provided on the inner side of the second clamping block;

[0016] The first connecting block is movably connected to the second connecting block via a first rotating shaft;

[0017] The first end of the first clamping block and the first end of the second clamping block are handheld ends;

[0018] The second end of the first clamping block and the second end of the second clamping block are clamping ends for clamping the needle;

[0019] The elastic member is arranged between the hand-held end of the first clamping block and the hand-held end of the second clamping block.

[0020] Preferably, the second end of the first clamping block and the second end of the second clamping block are both provided with a bayonet that cooperates with the outer edge of the needle.

[0021] Preferably, an anti-slip groove is provided on the outer side of the first end of the first clamping block and the outer side of the first end of the second clamping block.

[0022] Preferably, a first protrusion is provided on the outer side of the first clamping block, and a second protrusion is provided on the outer side of the second clamping block.

[0023] Preferably, it further comprises: a first guide groove, a second guide groove and a guide member;

[0024] The first guide groove and the second guide groove are opposite to each other and are vertically arranged on both side walls of the shell;

[0025] The guide piece is connected to the clamping mechanism, and two sides of the guide piece are respectively provided with a first sliding block matched with the first guide groove and a second sliding block matched with the second guide groove.

[0026] Preferably, the guide member is movably connected to the clamping mechanism via a second rotating shaft.

[0027] Preferably, protrusions are provided at the tops of the first guide groove and the second guide groove.

[0028] Preferably, the shell is made of transparent material.

[0029] Based on the above-mentioned invention, a removal device for an implantable intravenous drug delivery system is provided. A slot for cooperating with the needle is provided on the positioning base, and a positioning protrusion cooperating with the lower end of the shell is provided on the upper surface of the positioning base. The lower surface of the positioning base is provided as a fitting surface that fits the skin. A clamping mechanism for clamping the needle is movably provided in the shell, and sliding grooves for exposing the clamping mechanism on both sides are provided on both sides of the shell. A top cover for limiting the upward escape of the clamping mechanism is provided on the top of the shell. With the above-mentioned removal device for an implantable intravenous drug delivery system, since the needle is always in the shell during the removal process, the risk of the needle being exposed can be effectively avoided, thereby preventing the needle from pricking the patient or medical staff during the removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0031] Figure 1 A schematic structural diagram of a removal device for an implantable intravenous drug delivery system provided by an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the installation of a removal device for an implantable intravenous drug delivery system according to an embodiment of the present invention;

[0033] Figure 3 A schematic diagram of a clamping mechanism clamping a needle provided in an embodiment of the present utility model;

[0034] Figure 4 This is a schematic diagram of the clamping mechanism provided in an embodiment of the present invention clamping the needle and moving it to the top of the shell.

[0035] Among them, there are a positioning base 1, a card slot 11, a positioning protrusion 12, a flexible wing plate 13; a shell 2, a slide groove 21; a clamping mechanism 3, a first clamping block 31, a second clamping block 32; a top cover 4; a first guide groove 51, a second guide groove 52, a guide member 53; a subcutaneous implant base 6; and a needle 7. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] The present invention provides a device for removing an implantable intravenous drug delivery system. Figures 1 to 4 , Figure 1 Schematic diagram of the structure of the removal device of the implantable intravenous drug delivery system, which includes: a positioning base 1, a shell 2, a clamping mechanism 3 and a top cover 4;

[0038] The positioning base 1 is provided with a slot 11 for cooperating with the needle 7;

[0039] The upper surface of the positioning base 1 is provided with a positioning protrusion 12 that cooperates with the lower end of the shell 2, and the lower surface of the positioning base 1 is a fitting surface that fits against the skin;

[0040] The clamping mechanism 3 is movably disposed in the housing 2 and is used to clamp the needle 7;

[0041] Both sides of the housing 2 are provided with sliding grooves 21 for the clamping mechanism 3 to be exposed on both sides;

[0042] The top cover 4 is disposed on the top of the housing 2 and is used to prevent the clamping mechanism 3 from escaping upward.

[0043] It should be noted that since the clamping mechanism 3 is arranged in the shell 2, after the clamping mechanism 3 clamps the needle 7, the needle 7 can be removed from the subcutaneous implant base 6 by lifting the clamping mechanism 3 upward. Since a top cover 4 is provided on the top of the shell 2, the clamping mechanism 3 will not fall out of the shell 2, so that the needle 7 is always located in the shell 2, effectively preventing the needle 7 from being exposed.

[0044] It should also be noted that by providing a card slot 11 that cooperates with the needle 7 on the positioning base 1, when the positioning base 1 is installed, the card slot 11 is clamped on both sides of the needle 7. At this time, the lower end of the shell 2 cooperates with the positioning protrusion 12 of the positioning base 1, so that the clamping mechanism 3 can quickly align with the needle 7 for clamping.

[0045] It is worth noting that by providing the sliding grooves 21 exposed on both sides of the clamping mechanism 3 on both sides of the shell 2, it is convenient for the staff to operate the clamping mechanism 3 to clamp the needle 7, and it can also limit the position when the clamping mechanism 3 moves up and down, ensuring that the clamping mechanism 3 drives the needle 7 to move in a direction that is always perpendicular to the subcutaneous implant base 6, reducing the difficulty of removing the needle 7. In addition, when the clamping mechanism 3 clamps the needle 7 and moves it to the top of the shell 2, the needle 7 will not be exposed on the shell 2 at this time.

[0046] The embodiment of the present invention provides a slot 11 for cooperating with the needle 7 on the positioning base 1, and a positioning protrusion 12 for cooperating with the lower end of the shell 2 on the upper surface of the positioning base 1. The lower surface of the positioning base 1 is provided as a fitting surface that fits the skin, and the clamping mechanism 3 for clamping the needle 7 is movably provided in the shell 2. Slide grooves 21 for exposing the clamping mechanism 3 on both sides are provided on both sides of the shell 2, and a top cover 4 for limiting the upward escape of the clamping mechanism 3 is provided on the top of the shell 2. With the removal device of the implantable intravenous drug delivery system disclosed above, since the needle 7 is always in the shell 2 during the removal process, the risk of the needle 7 being exposed can be effectively avoided, thereby preventing the needle 7 from pricking the patient or medical staff during the removal process.

[0047] Specifically, flexible wings 13 are provided on both sides of the positioning base 1 .

[0048] It should be noted that by providing flexible wings 13 on both sides of the positioning base 1, the positioning base 1 can better fit the patient's skin, and then when the lower end of the shell 2 cooperates with the positioning protrusion 12 of the positioning base 1, it can effectively ensure that the clamping mechanism 3 can align with the needle 7 for clamping.

[0049] It is worth noting that the flexible wing 13 is made of skin-friendly plastic material.

[0050] Furthermore, the upper surface of the wing plate is provided with anti-slip grooves.

[0051] It should be noted that, by providing anti-skid grooves on the upper surface of the wing plate, it is possible to prevent the wing plate from slipping when the base 1 is fixed and positioned.

[0052] Specifically, the clamping mechanism 3 includes: a first clamping block 31, a second clamping block 32, an elastic member and a first rotating shaft;

[0053] A first connecting block is provided on the inner side of the first clamping block 31, and a second connecting block is provided on the inner side of the second clamping block 32;

[0054] The first connecting block is movably connected to the second connecting block via a first rotating shaft;

[0055] The first end of the first clamping block 31 and the first end of the second clamping block 32 are handheld ends;

[0056] The second end of the first clamping block 31 and the second end of the second clamping block 32 are clamping ends for clamping the needle 7;

[0057] The elastic member is disposed between the handheld end of the first clamping block 31 and the handheld end of the second clamping block 32 .

[0058] It should be noted that a first connecting block is provided on the inner side of the first clamping block 31, a second connecting block is provided on the inner side of the second clamping block 32, and the first connecting block is movably connected to the second connecting block through the first rotating shaft, and the first end of the first clamping block 31 and the first end of the second clamping block 32 are set as the hand-held end, the second end of the first clamping block 31 and the second end of the second clamping block 32 are set as the clamping end for clamping the needle 7, and the elastic member is provided between the hand-held end of the first clamping block 31 and the hand-held end of the second clamping block 32, and then by pressing the first end of the first clamping block 31 and the first end of the second clamping block 32 (that is, the first end of the first clamping block 31 and the first end of the second clamping block 32 are close to each other), the first clamping block 31 is engaged with the second clamping block 32. The second end of the block 31 is separated from the second end of the second clamping block 32. At this time, the elastic member is deformed by force and stores energy, and then the second end of the first clamping block 31 and the second end of the second clamping block 32 are respectively located on both sides of the needle 7. Finally, the first end of the first clamping block 31 and the first end of the second clamping block 32 are released, and the first end of the first clamping block 31 and the first end of the second clamping block 32 are separated under the elastic restoring force of the elastic member, while the second end of the first clamping block 31 and the two ends of the second clamping block 32 cooperate to tightly clamp the needle 7, and then when the medical staff moves the clamping mechanism 3 upward, it is ensured that the second end of the first clamping block 31 and the second end of the second clamping block 32 cooperate to tightly clamp the needle 7 to prevent the needle 7 from falling off.

[0059] Furthermore, the second end of the first clamping block 31 and the second end of the second clamping block 32 are both provided with a bayonet that cooperates with the outer edge of the needle 7 .

[0060] It should be noted that by providing a snap fit with the outer edge of the needle 7 at the second end of the first clamp 31 and the second end of the second clamp 32, it can further ensure that when the medical staff moves the clamping mechanism 3 upward, the second end of the first clamp 31 and the second end of the second clamp 32 cooperate to tightly clamp the needle 7, thereby preventing the needle 7 from falling off.

[0061] Specifically, an anti-slip groove 21 is provided on the outer side of the first end of the first clamping block 31 and the outer side of the first end of the second clamping block 32 .

[0062] It should be noted that by providing anti-slip grooves 21 on the outer side of the first end of the first clamp 31 and the outer side of the first end of the second clamp 32, slipping is prevented when the first end of the first clamp 31 and the first end of the second clamp 32 are pressed (even if the first end of the first clamp 31 is close to the first end of the second clamp 32).

[0063] Specifically, a first protrusion is provided on the outer side of the first clamping block 31 , and a second protrusion is provided on the outer side of the second clamping block 32 .

[0064] It should be noted that by setting a first protrusion on the outside of the first clamping block 31 and a second protrusion on the outside of the second clamping block 32, it is convenient for medical staff to push the clamping mechanism 3 upward when the clamping mechanism 3 clamps the needle 7 and moves upward.

[0065] Preferably, the elastic member is a spring.

[0066] It should be noted that the elastic member can be a spring, a spring, or other components that can produce elastic deformation when subjected to force. Those skilled in the art can choose according to their needs. However, the elastic member of the present application is preferably a spring.

[0067] Specifically, it also includes: a first guide groove 51, a second guide groove 52 (not shown in the figure due to viewing angle issues) and a guide member 53;

[0068] The first guide groove 51 and the second guide groove 52 are opposite to each other and are vertically arranged on both side walls of the housing 2;

[0069] The guide member 53 is connected to the clamping mechanism 3 , and a first sliding block matched with the first guide groove 51 and a second sliding block matched with the second guide groove 52 are respectively provided on both sides of the guide member 53 .

[0070] It should be noted that the first guide groove 51 and the second guide groove 52 are opposite to each other and vertically arranged on the two side walls of the shell 2, and the guide member 53 is connected to the clamping mechanism 3, and a first slider that cooperates with the first guide groove 51 and a second slider that cooperates with the second guide groove 52 are respectively provided on both sides of the guide member 53. Therefore, when the clamping mechanism 3 drives the needle 7 to move upward, the guide member 53 can always allow the clamping mechanism 3 to drive the needle 7 to remain vertical to the subcutaneous implant base 6, thereby reducing the difficulty of removing the needle 7.

[0071] It should also be noted that if Figure 1 As shown, the housing 2 is a quadrangular prism structure, and the first guide groove 51 and the second guide groove 52 are arranged at positions different from the slide groove 21 of the housing 2 , that is, they are arranged on the two side walls adjacent to the slide groove 21 .

[0072] Specifically, the guide member 53 is movably connected to the clamping mechanism 3 via the second rotating shaft.

[0073] It should be noted that the guide member 53 can be movably connected to the clamping mechanism 3 through the second rotating shaft, or can be connected through other methods. Those skilled in the art can make the selection according to needs.

[0074] Furthermore, protrusions are provided at the tops of the first guide groove 51 and the second guide groove 52 .

[0075] It should be noted that by providing a protrusion at the top of the first guide groove 51 and the second guide groove 52, when the clamping mechanism 3 moves to the top of the shell 2, the protrusion provided at the top of the first guide groove 51 and the second guide groove 52 can clamp the guide member 53 to prevent the guide member 53 from falling back, thereby preventing the clamping mechanism 3 from driving the needle 7 to fall back and pierce the patient or medical staff.

[0076] Specifically, the housing 2 is made of transparent material.

[0077] It should be noted that the shell 2 is made of a transparent material (such as acrylic), which can facilitate medical staff to observe when clamping the needle 7 through the clamping mechanism 3, thereby facilitating the operation of clamping the needle 7.

[0078] Preferably, the guide member 53 is made of self-lubricating material.

[0079] When using the implantable intravenous drug administration system safety removal device disclosed above, the card slot 11 of the positioning base 1 needs to be placed directly above the injection needle 7 of the implantable intravenous drug administration system, and the clamping mechanism 3 is pressed. The clamping mechanism 3 clamps the outer edge of the needle 7, and then the medical staff presses the wing-shaped plates on both sides of the positioning base 1 with one hand, and pushes the first protrusion and the second protrusion of the clamping mechanism 3 with the other hand so that it moves upward with the needle 7 perpendicular to the subcutaneous implant base 6 to the top of the shell 2 and is stuck and does not fall back. At this time, the needle 7 has been completely removed from the patient's implant base, and finally the implantable intravenous drug administration system safety removal device is discarded together with the needle 7.

[0080] Preferably, the positioning base 1 and the shell 2 can be welded by ultrasonic seamless welding.

[0081] Preferably, the top cover 4 and the shell 2 can be welded by ultrasonic seamless welding.

[0082] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A removal device for an implantable intravenous drug delivery system, the implantable intravenous drug delivery system comprising a subcutaneous implant base and a needle disposed on the subcutaneous implant base, characterized in that: include: Positioning the base, housing, clamping mechanism, and top cover; The positioning base is provided with a slot for cooperating with the needle; The upper surface of the positioning base is provided with a positioning protrusion that cooperates with the lower end of the shell, and the lower surface of the positioning base is a fitting surface that fits against the skin; The clamping mechanism is movably disposed in the housing, and is used to clamp the needle; Both sides of the shell are provided with sliding grooves for exposing both sides of the clamping mechanism; The top cover is arranged on the top of the shell and is used to limit the clamping mechanism from escaping upwards.

2. The removal device of the implantable intravenous drug delivery system according to claim 1, characterized in that: Flexible wings are provided on both sides of the positioning base.

3. The removal device of the implantable intravenous drug delivery system according to claim 2, characterized in that: The upper surface of the wing plate is provided with anti-slip grooves.

4. The removal device of the implantable intravenous drug delivery system according to claim 1, wherein: The clamping mechanism includes: a first clamping block, a second clamping block, an elastic member and a first rotating shaft; A first connecting block is provided on the inner side of the first clamping block, and a second connecting block is provided on the inner side of the second clamping block; The first connecting block is movably connected to the second connecting block via the first rotating shaft; The first end of the first clamping block and the first end of the second clamping block are handheld ends; The second end of the first clamping block and the second end of the second clamping block are clamping ends for clamping the needle; The elastic member is arranged between the handheld end of the first clamping block and the handheld end of the second clamping block.

5. The removal device of the implantable intravenous drug delivery system according to claim 4, characterized in that: The second end of the first clamping block and the second end of the second clamping block are both provided with a bayonet that cooperates with the outer edge of the needle.

6. The removal device of the implantable intravenous drug delivery system according to claim 4, characterized in that: An anti-slip groove is provided on the outer side of the first end of the first clamping block and the outer side of the first end of the second clamping block.

7. The removal device of the implantable intravenous drug delivery system according to claim 4, characterized in that: A first protrusion is provided on the outer side of the first clamping block, and a second protrusion is provided on the outer side of the second clamping block.

8. The removal device of the implantable intravenous drug delivery system according to claim 1, wherein: Also includes: a first guide groove, a second guide groove and a guide member; The first guide groove and the second guide groove are opposite to each other and are vertically arranged on two side walls of the housing; The guide member is connected to the clamping mechanism, and two sides of the guide member are respectively provided with a first sliding block matched with the first guide groove and a second sliding block matched with the second guide groove.

9. The removal device of the implantable intravenous drug delivery system according to claim 8, characterized in that: The guide member is movably connected to the clamping mechanism via a second rotating shaft.

10. The removal device of the implantable intravenous drug delivery system according to claim 8, characterized in that: The tops of the first guide groove and the second guide groove are provided with protruding pieces.

11. The removal device of the implantable intravenous drug delivery system according to claim 1, characterized in that: The shell is made of transparent material.

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