Stable remaining needle

Abstract

The utility model is applicable to the technical field of indwelling needles, and provides a stable indwelling needle which comprises a positive pressure joint, an extension tube and a fixing piece, the fixing piece comprises a high lifting part and a wing panel, an adhesive tape is arranged on the lower side of the wing panel, a fixing rope is arranged on the adhesive tape in a penetrating mode and used for being connected with the fixing piece, and the indwelling needle further comprises a needle withdrawing assembly. According to the indwelling needle, the fixing piece is arranged, the fixing piece is matched with the adhesive tape and the fixing rope, the end, connected with the positive pressure connector, of the extension tube is lifted and fixed, blood backflow is prevented, and the safety and stability of the indwelling needle are improved; when the button is pressed, the needle can be automatically withdrawn, the stability is better, and puncture failure caused by blood vessel puncture due to manual needle withdrawing of medical staff is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to indwelling needle technical field especially, it relates to a stable indwitting needle. BACKGROUND

[0002] The core components of the indwelling needle include a soft catheter that can be left in the blood vessel and a stainless steel puncture guide needle core. During use, the catheter and the needle core are punctured into the blood vessel together, and after the catheter enters the blood vessel completely, the needle core is withdrawn, and only the soft catheter is left in the blood vessel to perform infusion treatment.

[0003] In the prior art, the extension tube of the indwelling needle needs to be fixed by using a high platform fixing method, which forms a high platform effect by using adhesive tape (as shown in the accompanying drawings). Figure 1 However, the high platform effect and the fixing effect are both decreased after a period of time due to the flexibility of the adhesive tape, which affects the safe and stable use of the indwelling needle. SUMMARY

[0004] The utility model provides a stable indwitting needle, aims at solving the above -mentioned problem.

[0005] The utility model is realized in this way, a stable indwitting needle, including:

[0006] Positive pressure connector;

[0007] Extension tube connected with the positive pressure connector;

[0008] The fixing member is arranged at one end of the extension tube close to the positive pressure connector, and the fixing member includes:

[0009] High lifting part connected with the extension tube, used for lifting the extension tube;

[0010] Wings arranged at both ends of the high lifting part, and perforations are formed in the wings;

[0011] The lower side of the wings is provided with an adhesive tape for adhesion with the skin, and a fixing rope is arranged on the adhesive tape for connection with the fixing member, and both ends of the fixing rope are respectively threaded out from the adhesive surface of the adhesive tape, and the fixing rope is connected after being threaded through the two perforations.

[0012] Preferably, the indwitting needle further includes:

[0013] Catheter seat;

[0014] Transparent tee joint arranged on the catheter seat, the other end of the extension tube is connected with the transparent tee joint, and a single-hand clamp is arranged on the extension tube;

[0015] Catheter fixedly arranged at one end of the catheter seat, and a separation plug is fixed in the catheter seat on the side away from the catheter of the transparent tee joint.

[0016] A needle holder is fixed to the side wall of the needle holder, and the needle holder is located outside the catheter holder.

[0017] A needle holder is fixed to the side wall of the needle holder, and the needle holder is located outside the catheter holder.

[0018] Preferably, the indwelling needle further comprises a needle retraction assembly for retracting the needle after blood return is observed.

[0019] Preferably, the needle retraction assembly comprises:

[0020] A compression spring is installed in the catheter holder, and the compression spring is located between the isolation plug and the needle holder.

[0021] An annular step is arranged on the needle holder.

[0022] A button is rotatably installed on the catheter holder, the middle part of the button is rotatably connected with the catheter holder, one end of the button is located inside the catheter holder and is provided with a clamping hook capable of clamping the annular step, the other end of the button is located outside the catheter holder, and an elastic member is connected between the button and the catheter holder, and in a natural state, the elastic member acts on the button to keep the button clamped with the needle holder.

[0023] Preferably, the needle retraction assembly further comprises:

[0024] A limiting block is fixed to the side wall of the needle holder close to the catheter holder.

[0025] A limiting protrusion is fixed to the outer side wall of the catheter holder and cooperates with the limiting block, the limiting protrusion is annular and is provided with a gap for the limiting block to pass through, and initially, the spacing between the limiting block and the limiting protrusion is 2-3mm and the limiting block is misaligned with the gap.

[0026] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0027] The indwelling needle provided by the utility model discloses through setting fixing piece, the fixing piece includes high lifting part and wing piece, fixing piece and adhesive tape, fixed rope cooperate, one end of extension pipe and positive pressure connector connection is lifted and fixed, prevents blood backflow, improves the security, stability of indwelling needle.

[0028] The indwelling needle provided by the utility model discloses through setting needle retraction assembly, the needle retraction assembly includes compression spring, annular step, button and elastic member, presses down button, can carry out automatic needle retraction, stability is better, avoids medical staff manual needle retraction and easily stings blood vessel and leads to puncture failure. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the way that the extension pipe of the indwelling needle is fixed by the high lifting platform fixing method in the prior art.

[0030] Figure 2 is a structure schematic diagram of the stable indwelling needle provided by the utility model.

[0031] Figure 3 is a structure schematic diagram of the stable indwelling needle when the utility model is applied.

[0032] Figure 4 is a structure schematic diagram of the fixing part in the stable indwelling needle provided by the utility model.

[0033] Figure 5 is a structure schematic diagram of the adhesive tape and the fixing rope in the stable indwelling needle provided by the utility model.

[0034] Figure 6 is Figure 2 the partial enlarged view in the figure.

[0035] Figure 7 is an internal schematic diagram of the catheter seat in the stable indwelling needle provided by the utility model.

[0036] Mark annotation: 1, catheter seat; 2, catheter; 3, needle core; 4, needle holder handle; 5, needle seat; 6, extension tube; 7, single hand clamp; 8, positive pressure connector; 9, wing; 10, perforation; 11, high lift part; 12, limit block; 13, limit protrusion; 14, button; 15, notch; 16, adhesive tape; 17, fixing rope; 18, isolation plug; 19, compression spring; 20, annular step. DETAILED DESCRIPTION

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the description and the drawings are to be regarded as illustrative in nature and are not intended to limit the application; the terminology used in the description and the claims of the present application, and the above listed accompanying drawings, should not be taken to limit the scope of the application; the terminology "include" and "have" and their derivatives as used herein, should be understood as taking their broadest possible interpretation in the context of the application; the terminology "first", "second" and the like used in the description and the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

[0038] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0039] The utility model discloses an embodiment of a stable indwelling needle, like Figures 2-7 As shown in the figure, comprising:

[0040] Positive pressure connector 8;

[0041] The extension pipe 6 connected with the positive pressure connector 8;

[0042] The fixed part of the extension pipe 6 close to the positive pressure connector 8 one end, the fixed part includes:

[0043] The high lift part 11 connected with the extension pipe 6, for lifting the extension pipe 6, the high lift part 11 is provided with the clamping slot for the extension pipe 6 to pass through, and the high lift part 11 and the extension pipe 6 can be fixedly connected or detachably connected, and in the embodiment, the high lift part 11 and the extension pipe 6 are preferably integrated structure;

[0044] The wing 9 of the high lift part 11 both ends, preferably the wing 9 and the high lift part 11 are integrally formed, and the wing 9 is provided with the perforation 10;

[0045] The wing 9 lower side is equipped with the adhesive tape 16, is used for with skin bonding, the adhesive tape 16 is equipped with a fixed rope 17, is used for with fixed part connection, the fixed rope 17 both ends respectively from the adhesive tape 16's pasting surface to pass out, preferably the fixed rope 17 both ends pass out position's interval is equal to two perforation 10's interval, and when fixing, the fixed rope 17 both ends respectively pass through two perforation 10 after being tied, and the fixed part is bound tightly, one end of the extension pipe 6 and the positive pressure connector 8 are lifted and fixed, prevent blood reflux, improve the safety, stability of indwelling needle, and for adhesive tape 16 and fixed rope 17, medical staff is easy to obtain and can make oneself, need not to be customized, and the cost is lower.

[0046] Further, the indwelling needle further includes:

[0047] Catheter seat 1;

[0048] The transparent tee of being located on the catheter seat 1, the other end of the extension pipe 6 is connected with the transparent tee, and the extension pipe 6 is equipped with single hand clamp 7;

[0049] The catheter 2 of being fixedly arranged in one end of the catheter seat 1, the isolation plug 18 of being fixed in the catheter seat 1 in the transparent tee away from the catheter 2 one side;

[0050] The needle holder 5 of being located in the other end of the catheter seat 1, the needle core 3 of being inserted into the catheter 2 and being fixed in one end of the needle holder 5, the needle head of the needle core 3 passes through the isolation plug 18, the transparent tee and the catheter 2 in proper order and extends to the outside of the catheter 2;

[0051] The needle holder 4 of being fixed on the side wall of the needle holder 5, the needle holder 4 is located in the outside of the catheter seat 1.

[0052] The above is the prior art of the indwelling needle, which will not be described again.

[0053] At present, medical staffs mostly use two-hand needle withdrawal method when using the indwelling needle, specifically, the needle handle 4 is used to puncture the vein, and after seeing the blood return, the catheter 2 is sent into the vein together with the needle core 3, and then the needle is completely withdrawn. The medical staffs find that when the needle is withdrawn 2-3 mm, the needle head of the needle core 3 is outside the catheter 2, and the needle withdrawal is unstable due to physiological shaking of the hands and other factors, which can easily cause the blood vessel to be punctured and lead to puncture failure.

[0054] In this embodiment, the indwelling needle further comprises a needle withdrawal assembly for withdrawing the needle by a proper distance after the needle is used to puncture the vein and see the blood return. In the field, 2-3 mm is a proper distance.

[0055] In this embodiment, the needle withdrawal assembly comprises:

[0056] The compression spring 19 is installed in the catheter seat 1 and located between the isolation plug 18 and the needle seat 5. The compression spring 19 can be fixedly connected with the isolation plug 18 or the needle seat 5, or the compression spring 19 can be sleeved on the needle core 3, and the two ends of the compression spring 19 are in abutment with the isolation plug 18 and the needle seat 5, respectively. The compression spring 19 does not have too much limitation, and the acting force of the compression spring 19 on the needle seat 5 is greater than the resistance during the needle withdrawal;

[0057] The annular step 20 is arranged on the needle seat 5;

[0058] The button 14 is rotatably installed on the catheter seat 1. The middle part of the button 14 is rotatably connected with the catheter seat 1. One end of the button 14 is located inside the catheter seat 1 and is provided with a clamping hook capable of being clamped with the annular step 20. The other end of the button 14 is located outside the catheter seat 1. An elastic element (not shown in the figure) is connected between the button 14 and the catheter seat 1. Preferably, the elastic element is a torsion spring, which is located at the rotating connection position of the button 14 and the catheter seat 1. In the natural state, the acting force of the elastic element on the button 14 keeps the button 14 clamped with the needle seat 5.

[0059] After the medical staff uses the needle handle 4 to puncture the vein and see the blood return, the medical staff presses the end of the button 14 located outside the catheter seat 1. The button 14 rotates to separate the clamping hook from the annular step 20. Under the action of the compression spring 19, the needle seat 5 moves away from the isolation plug 18, and the needle core 3 moves to automatically withdraw the needle. The stability is better, thereby avoiding the problem that the medical staff manually withdraws the needle to easily puncture the blood vessel and lead to puncture failure.

[0060] Furthermore, in order to prevent the inertia of the needle seat 5 and other factors from causing the needle withdrawal distance to exceed the proper distance during the needle withdrawal, which is not conducive to the subsequent sending of the catheter 2 into the blood vessel, the needle withdrawal assembly further comprises:

[0061] The limiting block 12 fixed on the side wall of the needle holder 4 close to the catheter seat 1 can be integrally arranged;

[0062] The limiting protrusion 13 fixed on the outer side wall of the catheter seat 1 and matched with the limiting block 12 can be integrally arranged, the limiting protrusion 13 is annular and has a gap 15 for the limiting block 12 to pass through, initially, the distance between the limiting block 12 and the limiting protrusion 13 is 2-3mm and the limiting block 12 is misaligned with the gap 15;

[0063] When the needle is retracted, the compression spring 19 drives the needle seat 5 to move, the needle seat 5 drives the needle holder 4 to move, until the limiting block 12 and the limiting protrusion 13 are in contact, the needle retraction is stopped, after the catheter 2 is sent in, when the needle needs to be completely retracted, the needle holder 4 is rotated to move the limiting block 12 to the position of the gap 15, the gap 15 is passed through and then the medical staff manually completely retracts the needle.

[0064] In summary, the utility model provides a stable indwelling needle, and the working principle is:

[0065] After the puncture site is disinfected, the medical staff inserts the needle holder 4 into the vein to see the blood return, presses the button 14, the needle is automatically retracted by 2-3mm, then the catheter 2 and the needle core 3 are sent in, the needle holder 4 is rotated to move the limiting block 12 to the position of the gap 15, the needle is manually completely retracted, the catheter seat 1 is fixed through the adhesive tape 16, then the extension tube 6 is fixed through the cooperation of the fixing part, the fixing rope 17 and the adhesive tape 16.

[0066] It should be noted that, for the foregoing embodiments, in order to simply describe, they are all expressed as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the action sequence described, because according to the utility model, certain steps can adopt other sequences or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily necessary for the utility model.

[0067] The above embodiments are only used to illustrate the technical scheme of the utility model, and not to limit the protection scope of the utility model. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative labor belong to the scope to be protected by the utility model.

Claims

1. A stable indwelling needle comprising a positive pressure connector and an extension tube connected to the positive pressure connector, characterized in that, It also includes a fixing member arranged at one end of the extension tube close to the positive pressure connector, wherein the fixing member comprises: a high-lifting part connected with the extension tube, used for lifting the extension tube; wings arranged at two ends of the high-lifting part, wherein the wings are provided with perforations; a sticky tape arranged at the lower side of the wings, used for sticking to the skin, wherein a fixing rope is arranged on the sticky tape, used for connecting with the fixing member, and the two ends of the fixing rope are respectively arranged to pass through the sticky tape, and the two ends of the fixing rope are respectively arranged to pass through the two perforations and are connected after being fixed.

2. The stabilizing catheter of claim 1, wherein the stabilizing catheter is a needle. It also includes: a catheter seat; a transparent tee arranged on the catheter seat, wherein the other end of the extension tube is connected with the transparent tee, and the extension tube is provided with a single-hand clamp; a catheter fixedly arranged at one end of the catheter seat, wherein the catheter seat is fixed with a separation plug on the side away from the catheter; a needle seat arranged at the other end of the catheter seat, wherein the needle seat is inserted into the catheter and is fixed with a needle core, and the needle head of the needle core is arranged to pass through the separation plug, the transparent tee and the catheter in sequence and extends to the outside of the catheter; a needle holding handle fixedly arranged on the side wall of the needle seat, wherein the needle holding handle is arranged on the outside of the catheter seat.

3. The stabilised catheter as claimed in claim 2, wherein the needle is made of stainless steel. It also includes a needle retraction assembly, used for retracting the needle after the blood is seen after the needle is inserted into the vein.

4. The stabilised catheter as claimed in claim 3, wherein the needle is made of stainless steel. The needle retraction assembly comprises: a compression spring arranged in the catheter seat, wherein the compression spring is arranged between the separation plug and the needle seat; an annular step arranged on the needle seat; a button rotatably arranged on the catheter seat, wherein the middle part of the button is rotatably connected with the catheter seat, one end of the button is arranged in the catheter seat and is provided with a hook capable of being engaged with the annular step, the other end of the button is arranged on the outside of the catheter seat, and an elastic member is arranged between the button and the catheter seat, and the elastic member keeps the button engaged with the needle seat under the natural state.

5. The stabilised catheter as claimed in claim 4, wherein the needle is made of stainless steel. The needle retraction assembly further comprises: a limiting block fixedly arranged on the side wall of the needle holding handle close to the catheter seat; a limiting protrusion fixedly arranged on the outer side wall of the catheter seat and matched with the limiting block, wherein the limiting protrusion is annular and is provided with a gap for the limiting block to pass through, and the distance between the limiting block and the limiting protrusion is 2-3 mm and the limiting block is misaligned with the gap at the beginning.

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