A needle-puncture-proof implantable drug delivery needle

Abstract

The present invention discloses a needle-stick-proof implantable drug delivery needle, comprising a needle holder; a needle head movably connected to the needle holder in an upper and lower direction; a first shielding sheet and a second shielding sheet are respectively provided on both sides of the needle head in the needle holder, the first shielding sheet and the second shielding sheet are staggered in an upper and lower direction, the first shielding sheet and the second shielding sheet are connected to the needle holder via a first elastic portion, and the first elastic portion drives the first shielding sheet and the second shielding sheet to abut against the needle head. The purpose of the present invention is to solve the technical problems existing in the prior art and provide a needle-stick-proof implantable drug delivery needle, which can prevent medical staff and recycling personnel from being stabbed after the instrument is used, and has two layers of shielding sheets after being closed to prevent the needle head from being stabbed outward, thereby providing high safety.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an anti-puncture implantable needle for drug delivery. Background Art

[0002] A non-invasive needle is a specialized needle used with an implantable central venous port for medication and infusion. After medication is administered, healthcare professionals must remove the non-invasive needle. Traditionally, this removal process requires them to hold the port base in place with one hand while removing the needle with the other. This momentary recoil can cause injuries to healthcare professionals, impacting their work. Furthermore, removing the non-invasive needle can easily remove medication and body fluids, potentially leading to secondary infections and safety concerns. Summary of the Invention

[0003] 1. Technical problem to be solved by the invention

[0004] The purpose of the present invention is to solve the technical problems existing in the prior art and provide a needle-proof implantable drug delivery needle, which can prevent medical staff and recycling personnel from being stabbed after the instrument is used. Moreover, after being closed, there are two layers of shielding plates to prevent the needle from being stabbed outward, which is highly safe.

[0005] 2. Technical solution

[0006] In order to solve the above problems, the technical solution provided by the present invention is:

[0007] A needle-stick-proof implantable drug delivery needle comprises a needle seat; a needle head movably connected to the needle seat up and down; a first shielding piece and a second shielding piece are respectively provided on both sides of the needle head in the needle seat, the first shielding piece and the second shielding piece are staggered in the upper and lower directions, the first shielding piece and the second shielding piece are connected to the needle seat via a first elastic part, and the first elastic part drives the first shielding piece and the second shielding piece to abut against the needle head.

[0008] Optionally, both the first shielding piece and the second shielding piece are provided with a notch adapted to the needle head.

[0009] Optionally, a feedback portion that abuts and cooperates with the first shielding piece and / or the second shielding piece is provided in the needle seat. When the needle head is separated from the first shielding piece and the second shielding piece, the first shielding piece and / or the second shielding piece abuts and cooperates with the feedback portion.

[0010] Optionally, a fixing wing is connected to the needle seat via a second elastic portion, and the fixing wing is connected to the needle head.

[0011] Optionally, the needle seat includes a base and a movable seat, the movable seat is movably connected to the base up and down, the needle head is movably connected to the movable seat up and down, the first shielding piece and the second shielding piece are connected to the movable seat through a first elastic part, and the fixed wing is connected to the movable seat through the second elastic part, and the first movable groove and the second movable groove are arranged at intervals in the upper and lower parts of the base, the groove diameter of the first movable groove is smaller than the groove diameter of the second movable groove, and a first anti-slip portion is provided between the first movable groove and the second movable groove, and an extension portion is connected to the end of the first shielding piece and the second shielding piece facing away from the needle head, and the extension portion abuts and cooperates with the first movable groove and the second movable groove and can enter the first movable groove from the second movable groove through the first anti-slip portion.

[0012] Optionally, a second anti-slip portion is provided at the upper end of the first movable groove, and an anti-slip protrusion is connected to the movable seat. When the anti-slip protrusion and the extension portion are both located in the first movable groove, the anti-slip protrusion abuts and cooperates with the second anti-slip portion, and the extension portion abuts and cooperates with the first anti-slip portion.

[0013] Optionally, a guiding slope is provided on one side of the first anti-slip portion close to the second movable groove.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0016] This needle-stick-proof implantable drug delivery needle can prevent medical staff and recycling personnel from being stabbed after the device is used. After being closed, there are two layers of shielding plates to prevent the needle from piercing outward, which is highly safe. At the same time, the structure is constructed with the least parts and cost to seal the needle. It has a simple structure, is easy to manufacture, low cost, and is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of an anti-needlestick implantable drug delivery needle (released state) proposed in an embodiment of the present invention;

[0018] Figure 2 A schematic cross-sectional view of an anti-puncture implantable drug delivery needle (released state) proposed in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of an anti-needlestick implantable drug delivery needle proposed in an embodiment of the present invention (closed state);

[0020] Figure 4 A schematic cross-sectional view of an anti-puncture implantable drug delivery needle (closed state) proposed in an embodiment of the present invention;

[0021] 1. Needle seat; 2. Needle head; 3. First shielding piece; 4. Second shielding piece; 5. First elastic part; 6. Feedback part; 7. Second elastic part; 8. Fixed wing; 9. Base; 9a. First movable groove; 9b. Second movable groove; 10. Movable seat; 11. First anti-slip part; 11a. Guide slope; 12. Extension part; 13. Second anti-slip part; 14. Anti-slip protrusion. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0023] It should be noted that when an element is referred to as being "fixed on", "set on", "fixed on" or "installed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. Furthermore, when an element is considered to be "fixedly connected" to another element, the two may be fixed in a detachable manner or in a non-detachable manner, such as socketing, snap-fitting, integrally molded fixing, welding, etc., which can be achieved in the prior art and will not be repeated here. When an element is perpendicular or approximately perpendicular to another element, it means that the ideal state of the two is vertical, but due to the influence of manufacturing and assembly, there may be a certain vertical error. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The “first” and “second” involved in the present invention do not represent specific quantities and orders, but are only used to distinguish names.

[0026] Combined with attachment Figure 1-4, an anti-needlestick implantable drug delivery needle of this embodiment includes a needle seat 1; a needle head 2, which is movably connected to the needle seat 1 up and down; a first shielding piece 3 and a second shielding piece 4 are respectively provided on both sides of the needle head 2 in the needle seat 1, and the first shielding piece 3 and the second shielding piece 4 are staggered up and down, and the first shielding piece 3 and the second shielding piece 4 are connected to the needle seat 1 through a first elastic part 5, and the elastic force of the first elastic part 5 drives the first shielding piece 3 and the second shielding piece 4 to move toward the needle head 2 and abut against the needle head 2. When the needle head 2 moves upward and disengages from the first shielding piece 3 and the second shielding piece 4, the first shielding piece 3 and the second shielding piece 4 are stacked up and down under the elastic force of the first elastic part 5 to close the channel between the first shielding piece 3 and the second shielding piece 4, and at this time, the needle head 2 cannot extend outward.

[0027] This needle-stick-proof implantable drug delivery needle can prevent medical staff and recycling personnel from being stabbed after the device is used. After being closed, there are two layers of shielding plates to prevent the needle from piercing outward, which is highly safe. At the same time, the structure is constructed with the least parts and cost to seal the needle. It has a simple structure, is easy to manufacture, low cost, and is simple and easy to operate.

[0028] As an optional solution of the present invention, in order to ensure the direction of the needle 2 when the first shielding piece 3 and the second shielding piece 4 abut against the needle 2, the first shielding piece 3 and the second shielding piece 4 are both provided with notches that are adapted to the needle 2, and the notches on the first shielding piece 3 and the second shielding piece 4 constitute a circular hole that is adapted to the needle 2.

[0029] As an optional solution of the present invention, a feedback part 6 is provided in the needle seat 1, which is in abutment with the first shielding piece 3 and the second shielding piece 4. The feedback part 6 is respectively arranged at the lower end of the first shielding piece 3 and the upper end of the second shielding piece 4. When the needle head 2 is separated from the first shielding piece 3 and the second shielding piece 4, the first shielding piece 3 and the second shielding piece 4 are in abutment with the feedback part 6, and a sound is emitted at the moment of cooperation to provide medical staff with information that the first shielding piece 3 and the second shielding piece 4 are in a closed state at this time.

[0030] As an optional solution of the present invention, in order to ensure that the sound produced is loud enough, the first shielding piece 3 , the second shielding piece 4 and the feedback part 6 are all made of plastic.

[0031] As an optional solution of the present invention, the needle seat 1 is connected to a fixed wing 8 through a second elastic part 7, and the fixed wing 8 is connected to the needle head 2. The fixed wing 8 drives the needle head 2 to move. When the second elastic part 7 is at the pull rope limit, the tip of the needle head 2 is still located in the needle seat 1 and is separated from the first shielding piece 3 and the second shielding piece 4. Through the linkage of the fixed wing 8, a non-flattened needle tube can be used with a larger flow rate (otherwise a flattened needle tube needs to be used as an anti-dropout structure).

[0032] As an optional solution of the present invention, the needle seat 1 includes a base 9 and a movable seat 10, the movable seat 10 is movably connected to the base 9, the needle head 2 is movably connected to the movable seat 10, the first shielding piece 3 and the second shielding piece 4 are connected to the movable seat 10 through the first elastic portion 5, the fixed wing 8 is connected to the movable seat 10 through the second elastic portion 7, and the base 9 is provided with a first movable groove 9a and a second movable groove 9b at intervals above and below. The first movable groove 9a is provided above the second movable groove 9b, and the groove diameter of the first movable groove 9a is smaller than The groove diameter of the second movable groove 9b, a first anti-slip portion 11 is provided between the first movable groove 9a and the second movable groove 9b, and an extension portion 12 is connected to the end of the first shielding piece 3 and the second shielding piece 4 away from the needle head 2, the extension portion 12 is in abutment with the first movable groove 9a and the second movable groove 9b and can pass through the first anti-slip portion 11 from the second movable groove 9b into the first movable groove 9a, the extension portion 12 cannot pass through the first anti-slip portion 11 from the first movable groove 9a into the second movable groove 9b, when the extension portion 12 When located in the second movable groove 9b, the first shielding piece 3 and the second shielding piece 4 can respectively abut against the two sides of the needle head 2. When the needle head 2 needs to be closed, the fixed wing 8 is pulled upward with force, and the fixed wing 8 pulls the needle head 2 to separate it from the first shielding piece 3 and the second shielding piece 4. At this time, the first shielding piece 3 and the second shielding piece 4 are pre-closed under the elastic force of the first elastic part 5. Then, the fixed wing 8 is pulled upward with force, and the fixed wing 8 pulls the movable seat 10 upward through the second elastic part 7, and the movable seat 10 pulls The first shielding piece 3 and the second shielding piece 4, the extension part 12 on the first shielding piece 3 and the second shielding piece 4 enters the first movable groove 9a from the second movable groove 9b, and at this time the extension part 12 abuts against the first movable groove 9a, so that the first shielding piece 3 and the second shielding piece 4 are sealed twice (the groove diameter of the first movable groove 9a is smaller than the overall length of the first shielding piece 3 and the second shielding piece 4), and the needle head 2 is sealed twice through a single operation, which can effectively avoid the risk of single sealing failure, and the operation method is simple and efficient.

[0033] As an optional solution of the present invention, the upper end of the first movable groove 9a is provided with a second anti-slip portion 13, and the movable seat 10 is connected to an anti-slip protrusion 14, and the anti-slip protrusion 14 abuts against the first anti-slip portion 11 or the second anti-slip portion 13 to reach the limit of activity. When the anti-slip protrusion 14 and the extension portion 12 are both located in the first movable groove 9a, the anti-slip protrusion 14 abuts and cooperates with the second anti-slip portion 13, and the extension portion 12 abuts and cooperates with the first anti-slip portion 11. At this time, the movable seat 10 is in an immovable state in the base 9, and the needle 2 abuts against the first shielding piece 3 and the second shielding piece 4 under the elastic force of the second elastic portion 7 and is also in an immovable state. The various components will not generate noise due to collision during the waste disposal stage, and it can also prevent frequent collisions from causing disintegration and exposing the needle.

[0034] As an optional solution of the present invention, in order to facilitate the extension portion 12 to enter the first movable groove 9a through the first anti-slip portion 11 when force is applied, a guiding slope 11a is provided on the side of the first anti-slip portion 11 close to the second movable groove 9b.

[0035] The above is a schematic description of the present invention and its embodiments, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs a structure and embodiment similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A needle-puncture-proof implantable drug delivery needle, characterized by: include needle holder; A needle, movably connected to the needle seat up and down; A first shielding piece and a second shielding piece are respectively provided on both sides of the needle head in the needle seat, the first shielding piece and the second shielding piece are staggered in an upper and lower position, the first shielding piece and the second shielding piece are connected to the needle seat through a first elastic part, and the first elastic part drives the first shielding piece and the second shielding piece to abut against the needle head; The first shielding piece and the second shielding piece are both provided with a notch adapted to the needle head; The needle seat is connected to a fixing wing via a second elastic portion, and the fixing wing is connected to the needle head; The needle seat includes a base and a movable seat, the movable seat being movably connected to the base up and down, and the needle head being movably connected to the movable seat up and down, the first shielding piece and the second shielding piece being connected to the movable seat by a first elastic part, and the fixed wing being connected to the movable seat by the second elastic part; the first movable groove and the second movable groove are provided at intervals up and down in the base, the groove diameter of the first movable groove is smaller than the groove diameter of the second movable groove, a first anti-slip portion is provided between the first movable groove and the second movable groove, an extension portion is connected to the ends of the first shielding piece and the second shielding piece facing away from the needle head, the extension portion abuts and cooperates with the first movable groove and the second movable groove and can enter the first movable groove from the second movable groove through the first anti-slip portion; A guiding slope is provided on one side of the first anti-slip portion close to the second movable groove; A second anti-slip portion is provided at the upper end of the first movable groove, and an anti-slip protrusion is connected to the movable seat. When the anti-slip protrusion and the extension portion are both located in the first movable groove, the anti-slip protrusion abuts and cooperates with the second anti-slip portion, and the extension portion abuts and cooperates with the first anti-slip portion.

2. The needle-puncture-proof implantable drug delivery needle according to claim 1, characterized in that: A feedback portion that abuts and cooperates with the first shielding piece and / or the second shielding piece is provided in the needle seat. When the needle head is separated from the first shielding piece and the second shielding piece, the first shielding piece and / or the second shielding piece abuts and cooperates with the feedback portion.

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