A combined safe and non-destructive infusion port needle

Abstract

The present invention discloses a combined safety non-destructive infusion port needle, comprising a needle tube, a needle handle, a catheter, a catheter clamp, a catheter seat, a locking cap, a sheath and a safety box; the distal end of the working section of the needle tube is provided with a spoon-shaped head, the needle tube cutting edge plane is on the side of the head, and is nearly coincident with the outer circle generatrix of the needle tube, and the inner arc at the rear end of the cutting edge is rounded to effectively avoid damage to the infusion port injection plug; convex ribs and grooves are respectively provided on the upper surfaces of the butterfly wings on both sides of the needle handle, and the convex ribs and the grooves can fit together to avoid relative slippage of the butterfly wings; the safety box can be combined together by being hinged to the hinge shaft at the front end of the needle handle through a hinge ring, and before completing the infusion, the box body and the box cover are carried on the upper part of the needle handle without blocking the operator's line of sight, and after completing the infusion and pulling out the needle tube, the box body and the box cover are flipped over so that the needle tube is completely stored in the box body cavity and is sealed and locked by the box cover, which can effectively prevent punctures and contamination of the patient's blood and body fluids, and provide safety protection for the infusion port needle.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a safe and non-destructive needle dedicated to an implantable infusion port. Background Art

[0002] The infusion port is a relatively new implantable drug delivery device. It establishes an infusion channel for infusing drugs or nutrients into the patient's vein, artery, abdominal cavity or spine through the infusion port and its catheter set pre-implanted under the patient's skin, making the difficult and risky repeated puncture and catheter infusion of arteries and veins, thoracic and abdominal cavities and / or spine into a simple subcutaneous puncture and targeted guided infusion. And after puncture, indwelling infusion can be performed for up to 1 week. However, in actual application, if an ordinary injection needle or infusion needle is used for puncture, the needle tip edge will cause cutting damage to the injection plug of the infusion port, which may cause debris to enter the human vein or internal organs, causing thrombosis or granuloma. Or due to leakage of the infusion port, tissue inflammation, ulcers and even necrosis. Therefore, a non-damaging dedicated indwelling infusion needle must be used. In addition, after the infusion is completed and the needle tip is pulled out, it is exposed to the outside, which is easy to stab the operator or subsequent handler's body and cause accidental infection. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a combined safe and non-destructive infusion port needle.

[0004] The technical solution of the present invention is: a combined safety non-destructive infusion port needle, including a needle tube, a needle handle, a catheter, a catheter clamp, a catheter seat, a locking cap, a sheath and a safety box. It is characterized in that: the working section and the fixed section of the needle tube are at a right angle. The distal end of the working section is a needle tip edge, and the fixed section of the needle tube is connected to the inner hole of the catheter and is fixed to the inner hole of the needle handle. The other end of the catheter passes through the catheter clamp and is fixedly connected to the connecting seat. The locking cap can be locked at the rear end of the connecting seat. The sheath is sleeved on the cylindrical platform at the lower part of the front end of the needle handle. The safety box is hinged to the front end of the needle handle.

[0005] A further technical solution is that the head structure of the needle tube working section is a single-sided arc shape, the main plane of the needle tube cutting edge and the liquid outlet are located on the side of the needle tube head and are parallel to the needle tube axis, close to coinciding with the outer circle generatrix of the needle tube. The distance between the tip of the needle tube cutting edge and the axis of the needle tube working end is no greater than the needle tube radius, and the rear arc of the needle tube cutting edge is made concave and rounded.

[0006] A further technical solution is that the two sides of the needle handle are provided with larger butterfly-shaped needle wings with the center forward, the lower surface of the butterfly wings has dense small protrusions, and the upper surfaces of the butterfly wings on both sides have corresponding lower pits, rings, grooves and upper convex platforms, rings, and ribs.

[0007] According to a further technical solution, the safety box includes a box body, a box cover and a hinge seat. The lower edge of the front end of the box body is hinged to the edge of one side of the bottom plate of the hinge seat through a flexible hinge, and the upper edge of the rear end is hinged to the front edge of the middle plane of the box cover through a flexible hinge. The two sides of the bottom plate of the hinge seat are provided with hinge rings, which can be assembled and hinged with the hinge shaft at the front end of the needle handle.

[0008] A further technical solution is that the upper part of the box body of the safety box is a concave cavity, a pipe clamp is provided in the middle of the lower part of the box body bottom plate, and a through slot is provided in the front box wall. An upper convex platform is provided on the upper plane of the box cover, and a locking head of "H-shaped", "mushroom-shaped" or other shapes is provided at the rear end, which can be buckled and locked with the locking groove of inverted "T" shape or other small upper and large lower shapes provided on the bottom plate of the hinge seat.

[0009] A further technical solution is that the safety box includes a box body and a box cover. The lower edge of the front end of the box body is directly connected to the upper edge of the front end of the needle handle through a flexible belt, and the upper edge of the rear end of the box body is hinged to the front edge of the middle plane of the box cover through a flexible hinge. The upper part of the box body is a concave cavity, and there is a hook on each of the two sides of the middle part, and a pipe clamp is provided in the middle of the bottom surface of the box body. An upper convex platform is provided on the upper plane of the box cover, and a clamp is provided on each of the two sides of the box cover to buckle and lock with the hook of the box body.

[0010] (1) The working section head of the needle tube adopts a spoon-shaped structure, the main plane of the needle tip edge is parallel to the needle tube axis and almost coincides with the generatrix of the needle tube side surface, the distance between the top of the needle tip and the working section axis is no greater than the radius of the needle tube, and the rear arc of the needle tube edge is made concave and blunt, thereby effectively avoiding damage to the infusion port injection plug during puncture and avoiding deflection of the infusion port needle during puncture, greatly improving the controllability of the operation;

[0011] (2) The two sides of the needle handle have relatively large butterfly wings with the center facing forward, the lower surface has dense small protrusions, and the upper surface has corresponding lower concave pits, rings, grooves and upper convex platforms, rings, and ribs of arbitrary shapes. When in use, the operator's thumb and index finger flip up the two sides of the butterfly wings. When the two planes are fitted together, the pits, rings, grooves on the upper surface of the butterfly wings are interlocked with the platforms, rings, and ribs, thereby avoiding the left and right shaking of the needle tube caused by the slippage of the butterfly wing surface, thereby enhancing the stability and controllability of the product of the present invention during puncture.

[0012] (3) A technical solution of a safety box, wherein the front end of the box body is connected to the needle handle by a flexible belt, and the rear end is hinged to the box cover by a flexible hinge. The upper part of the box body is a concave cavity, with a hook on each side, and an upper boss on the upper part of the box cover, and a clamp ring on each side. Before use, the box body and the box cover are attached to the upper part of the needle handle, so that the hose clamp is buckled on the catheter at the rear end of the needle handle to prevent the safety box from blocking the line of sight of the needle tube working section during puncture. When the infusion is completed and the needle tube is pulled out from the infusion port implanted under the patient's skin, the tube clamp on the bottom of the box body can be separated from the catheter, and the box body can be turned over so that the opening end of the box body is fixed to the outer periphery of the cylindrical platform at the lower part of the front end of the needle handle, and the needle tube is stored in the groove in the box body. Then the box cover is turned over so that the boss on the box cover is embedded in the box body groove, and the clamp rings on both sides of the box cover are buckled and locked with the box body clamp ring. In this way, the needle tube is completely sealed, effectively preventing the needle tip and blood and body fluids from harming the human body after use. Another advantage of the technical solution of the direct-connection safety box is that the structure is relatively simple and easy to operate.

[0013] (4) Another technical solution of a safety box, wherein the safety box comprises a box body, a box cover and an articulated seat. The front end of the box body is hinged to the bottom plate of the articulated seat through a flexible hinge, and the rear end is hinged to the box cover through a flexible hinge. The upper part of the box body is a concave cavity, and a pipe clamp or buckle is provided in the middle of the bottom surface of the box body. The upper plane of the box cover is provided with an upper convex platform, and the rear end is provided with an "H-shaped", "mushroom-shaped" or other shaped locking head, which can be buckled and locked with the inverted "T"-shaped or other shaped locking grooves with a small top and a large bottom provided on the bottom plate of the articulated seat. Before use, the box body and the bottom plate of the articulated seat are unfolded through a flexible hinge, and the box cover is attached to the upper part of the needle handle together with the box cover, and is fixed to the rear end of the needle handle by a buckle. When the infusion is completed and the needle is pulled out from the patient, the buckle on the bottom of the box body can be separated from the rear end of the needle handle, the box body and the box cover can be lifted, and the hinge seat can be driven to flip to the lower front end of the needle handle, so that the working section of the needle tube including the needle tip is completely stored in the concave cavity of the box body, and then the box cover is flipped so that the convex platform on the box cover is embedded in the cavity of the box body, and the locking head provided at the rear end of the box cover can be buckled and locked with the locking groove provided on the bottom plate of the hinge seat.

[0014] This effectively prevents the needle tip, blood and body fluid from harming the human body after use. Another advantage of the combined safety box technical solution is that it can provide the option of installing or not installing the safety box according to clinical needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0016] Figure 2 It is a partial enlarged schematic diagram of the needle tube and the intact needle tip in the present invention;

[0017] Figure 3 It is a front view of the needle handle in the present invention;

[0018] Figure 4 A top view of the needle handle of the present invention;

[0019] Figure 5 It is a three-dimensional schematic diagram of an embodiment of an assembled safety box of the present invention in an unfolded state;

[0020] Figure 6 It is a schematic diagram of an embodiment of the present invention after the infusion port puncture is completed;

[0021] Figure 7 It is a schematic diagram of a needle tip protection state after completing infusion of an infusion port according to an embodiment of the present invention;

[0022] Figure 8 This is a schematic diagram of the unfolded state of an embodiment of the present invention in which the safety box and the needle handle are integrated into one. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in combination with the embodiments and drawings to help fully understand the purpose, features and effects of the present invention. Obviously, what is described here is only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention. In addition, all the connections or hinges mentioned in the text do not refer to a single form of connection or hinge between components. Rather, it means that more connection or hinge modes can be formed by deformation or increase or decrease in a certain form according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0024] Reference Figure 1 One embodiment of the present invention is composed of a needle tube 1, a needle handle 2, a catheter 3, a catheter clamp 4, a connecting seat 5, a locking cap 6, a sheath 7 and a safety box 8.

[0025] Reference Figure 2 The working section 11 of the needle tube 1 is at right angles to the fixed section 12. The main plane 111 of the needle tube cutting edge at the far end of the working section 11 is substantially parallel to the axis of the working section of the needle tube 1 and almost coincides with the outer circle generatrix of the working section 11; the inner arc 112 at the rear end of the main plane 111 of the needle tube cutting edge is processed to be concave and rounded; thereby effectively avoiding the cutting of the infusion port injection plug during puncture, and basically maintaining the puncture force vertically transmitted to the needle tip vertex 113 along the axis of the working section of the needle tube during puncture, avoiding deflection during puncture, resulting in puncture failure or needle tip damage.

[0026] Reference Figure 3-4As shown, butterfly wings 22 are provided on both sides of the needle handle 2, and the front edge of the butterfly wings 22 is very close to the axis of the needle tube working section. The lower planes of the butterfly wings 22 on both sides are distributed with dense small convex points 223, and the upper planes of the butterfly wings 22 on both sides have corresponding upper convex circular rings, truncated cones, convex ribs or convex points and lower concave circular rings, circular pits, grooves or concave points. The upper planes of the butterfly wings 22 on both sides are respectively provided with lower concave circular pits 222 and upper convex circular rings 221, and the outer diameter of the upper convex circular ring 221 is slightly smaller than the inner diameter of the lower concave circular pit 222. Therefore, when using, the operator uses the thumb and index finger to press against the lower planes with dense convex points 223 of the butterfly wings 22 on both sides and flip them up, so that the upper planes of the butterfly wings on both sides overlap each other, and the upper convex circular ring 221 on one side of the butterfly wings is embedded in the lower concave circular pit 222, which not only increases the friction resistance between the finger and the butterfly wings, but also avoids the relative slippage of the butterfly wing surface, thereby effectively improving the operator's ability to control the infusion port needle.

[0027] Reference Figure 3-5 The front ends of the connecting column 21 in the middle of the needle handle 2 are provided with hinge shafts 211, which can be matched with the hinge rings 831 on the hinge seat 83 of the assembled safety box 8. The assembled safety box 8 is mainly composed of a box body 81, a box cover 82 and a hinge seat 83, wherein the front end of the box body 81 is hinged to the hinge seat 83 through a flexible hinge 84, and the rear end is hinged to the box body 81 through a flexible hinge 85.

[0028] Reference Figure 6 and Figure 7 , the assembled safety box 8, before the infusion port needle is punctured, the box body 81 together with the box cover 82 is carried on the upper part of the needle handle 2, and is buckled with the catheter 3 at the rear end of the needle handle 2 through the buckle 812 at the bottom of the box body 81; the operator pinches the butterfly wings 22 on both sides of the needle handle 2 with the thumb and index finger of one hand to control the direction and force of the needle tube working section 11 to puncture the center point of the infusion port B pre-implanted under the human skin A, until the main plane of the front end of the needle tube 1 passes through the infusion port B injection plug and enters the infusion cavity, and then the butterfly wings 22 are flattened, and the infusion port needle is fixed according to the infusion port infusion operation procedures for indwelling infusion. When the infusion is completed and the needle tip is pulled out, in order to prevent the needle tip from stabbing the operator or subsequent handlers, the box body 81 of the safety box 8 should be lifted so that the buckle 812 at the bottom is disengaged from the catheter 3, and then the box body 81 is flipped around the hinge shaft 211 at the front end of the needle handle 2 to the same direction of the needle tube working section 11, so that the needle tube working section 11 together with the needle tip 113 are completely stored in the concave cavity of the box body 81, and then the box cover 82 is flipped so that the boss 821 on the box cover 82 is snapped into the box body 81, and the locking head 822 at the rear end of the box cover 82 is snapped into the locking groove 832 on the hinge seat, so that the used needle tube working section 11 is completely closed and locked to achieve the purpose of preventing stabbing and pollution.

[0029] Reference Figure 8In another embodiment of the present invention, the safety box is connected to the needle handle as a whole. The front end of the safety box body 23 is directly connected to the front end of the connecting column 21 through a flexible belt 231, and the rear end is hinged to the box cover 24 through a flexible hinge 241. Usually, the box body and the box cover are carried on the top of the needle handle connecting column 21, and are buckled with the catheter through the buckle 233 at the bottom of the box body 23. When the infusion is completed and the needle tube is pulled out, the box body 23 of the safety box can be lifted to separate the catheter buckle 233 at the bottom from the catheter 3, and the box body 23 can be turned over to the same direction as the needle tube working section 11, so that the needle tube working section 11 is completely stored in the concave cavity of the box body 23, and then the box cover 24 is turned over so that the boss 242 on the box cover 24 is snapped into the cavity of the box body 23, and the snap rings 243 on both sides of the box cover 24 are buckled with the hooks 232 on both sides of the box body, so that the needle tube working section 11 after use is completely closed and locked, so as to achieve the effect of safety, anti-puncture and anti-pollution.

Claims

1. A combined safety non-destructive infusion port needle, comprising a needle tube, a needle handle, a catheter, a catheter clamp, a catheter seat, a locking cap, a sheath and a safety box, characterized in that: The working section and the fixed section of the needle tube are at a right angle, the fixed section of the needle tube is connected to the inner hole of the catheter and is fixed to the inner hole of the needle handle; the working section passes through the center of the cylindrical platform at the lower front end of the needle handle, and the distal end of the working section is the cutting edge of the needle tube; the other end of the catheter passes through the catheter clamp and is fixedly connected to the connecting seat; the locking cap can be locked at the rear end of the connecting seat to close the tapered hole of the connecting seat; the sheath can be sleeved on the cylindrical platform at the lower front end of the needle handle; the safety box is hinged to the front end of the needle handle.

2. The combined safe non-destructive infusion port needle according to claim 1 is characterized in that The top of the needle tube working section is a single-sided closed arc shape, the main plane of the needle tube cutting edge and the liquid outlet are located on the other side of the closed arc shape at the top of the needle tube and are parallel to the needle tube axis, and are nearly coincident with the outer circle generatrix of the needle tube; the distance between the tip of the needle tube cutting edge and the axis of the needle tube working end is close to the radius of the needle tube, and the inner arc at the rear end of the needle tube cutting edge is made concave and chamfered.

3. The combined safe and non-destructive infusion port needle according to claim 1 is characterized in that The two sides of the needle handle are provided with butterfly wings with the center forward, and the lower surface of the butterfly wings has dense small convex points. The upper surfaces of the butterfly wings on both sides have corresponding upper convex rings, frustums, convex ribs or convex points and lower concave rings, pits, grooves or concave points. When the upper planes on the two sides are in corresponding contact, they can fit each other.

4. The combined safe non-destructive infusion port needle according to claim 1 is characterized in that The safety box comprises a box body, a box cover and a hinge seat; the front end of the box body is hinged to one side of the bottom plate of the hinge seat through a flexible hinge, and the upper plane of the rear end is hinged to the front part of the upper plane of the box cover through a flexible hinge; hinge rings are provided on both sides of the bottom plate of the hinge seat, and the hinge rings can be hinged to the hinge shaft at the front end of the needle handle.

5. The combined safe non-destructive infusion port needle according to claim 4 is characterized in that The upper part of the box body of the safety box is a concave cavity, and a pipe clamp or buckle is provided at the bottom of the box body; an upper boss is provided on the upper plane of the box cover, and a locking head including an "H-shaped", "Y-shaped" or "mushroom-shaped" is provided at the rear end to buckle and lock with an inverted "T"-shaped or upper small and lower large locking groove provided on the bottom plate of the hinge seat.

6. The combined safe non-destructive infusion port needle according to claim 4 is characterized in that The safety box comprises a box body and a box cover; the front end of the box body is connected to the front end of the needle handle through a flexible belt, and the rear end of the box body is hinged to the front part of the upper plane of the box cover through a flexible hinge; the upper part of the box body is a concave cavity, each side has a hook, and the bottom of the box body is provided with a tube clamp or a buckle; an upper boss is provided on the upper plane of the box cover, and each side of the box cover is provided with a snap ring which can be buckled and locked with the box body hook.

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