CN116999652A

CN116999652A - Remaining needle

Info

Publication number: CN116999652A
Application number: CN202310886841.6A
Authority: CN
Inventors: 王国辉; 罗培栋; 陈祁
Original assignee: Suzhou Bangyi Medical Technology Co ltd
Current assignee: Suzhou Bangyi Medical Technology Co ltd
Priority date: 2023-07-19
Filing date: 2023-07-19
Publication date: 2023-11-07
Anticipated expiration: 2043-07-19
Also published as: CN116999652B

Abstract

The utility model provides an indwelling needle, includes needle head subassembly, annotates liquid joint assembly, the needle head subassembly with annotate between the liquid joint assembly through extension pipe fixed connection, joint assembly is joined in marriage fixedly connected with between needle head subassembly and the notes liquid and accomodate the supporting component, accomodate the supporting component including fixed connection needle head subassembly with annotate liquid joint assembly between and the cover establish extension pipe outside flexible pipe, flexible setting piece is fixed to the inside of flexible pipe, flexible pipe's outer wall is fixed to be provided with and is used for carrying out the first locating component of design to flexible pipe shrink state, fixed being provided with is used for buckling flexible pipe to the second locating component that carries out the fixation after the end-to-end phase connection state between the outer wall at flexible pipe both ends; through set up a flexible pipe and design through elastic shaping piece outside the extension pipe, elastic shaping piece can design the extension pipe when the infusion, makes the extension pipe can not take place to buckle and stop up the flow of liquid medicine.

Description

Remaining needle

Technical Field

The application relates to the technical field of medical instruments, in particular to an indwelling needle.

Background

Venous indwelling needles are also known as venous trocars. The core comprises a soft catheter which can be remained in a blood vessel and a stainless steel puncture guiding needle core. When the catheter is used, the catheter and the needle core are punctured into a blood vessel together, after the catheter completely enters the blood vessel, the needle core is withdrawn, and only the soft catheter is remained in the blood vessel for infusion treatment, generally, the remained needle can be remained in the blood vessel for 3 to 5 days, and some can be remained for 7 to 10 days.

In the prior art, the indwelling needle is generally provided with a needle end and a liquid injection joint end, and a long extension tube is connected between the needle end and the liquid injection joint end, so that the liquid injection joint end is free and convenient for connecting an infusion joint with the infusion tube, but other problems are brought by the existence of the extension tube, for example, when in infusion, a patient eats or slight movement brought by going to a toilet easily causes the extension tube to bend and block, thereby the liquid medicine cannot smoothly flow, and then a blood return phenomenon is generated, and the infusion risk is increased; after transfusion is completed, the indwelling needle is left on the patient, at the moment, medical staff fixes the extension tube and the liquid injection joint end through the adhesive tape, but normally the adhesive tape cannot completely fix the extension tube, so that the extension tube is suspended, the extension tube is extremely easy to hook with foreign objects, the indwelling needle falls off, the patient is injured, and meanwhile, the indwelling needle cannot be used for a long time; in addition, when the indwelling needle is fixed, because the existence of the extension tube, medical staff often fixes the needle end, the liquid injection joint end and the extension tube respectively through the adhesive tape, the occupied area of the adhesive tape on the skin of a patient is large, and the free activity of the patient is affected, so that part of medical staff can bend the extension tube for many times to enable the liquid injection joint end to be close to the needle end, and further the occupied space of the extension tube is smaller, however, as the time passes, the bent extension tube has elasticity, the adhesive tape can be continuously extruded to enable the adhesive tape to loosen the positioning of the extension tube, and the elastic force can be transmitted to the needle assembly to enable the indwelling hose in the needle assembly to deviate, so that the patient is uncomfortable and meanwhile the blocking of the indwelling hose is caused, and the follow-up transfusion is affected.

Accordingly, the inventors have had the need to devise a new indwelling needle which overcomes the above-mentioned problems.

Disclosure of Invention

The application mainly aims to provide an indwelling needle for solving the problems that an infusion extension tube is easy to bend and the extension tube is difficult to fix in the related art.

In order to achieve the above purpose, the application provides an indwelling needle, which comprises a needle head assembly and a liquid injection joint assembly, wherein the needle head assembly is fixedly connected with the liquid injection joint assembly through an extension tube, a storage supporting assembly is fixedly connected between the needle head assembly and the liquid injection joint assembly, the storage supporting assembly comprises a telescopic tube fixedly connected between the needle head assembly and the liquid injection joint assembly and sleeved outside the extension tube, an elastic shaping piece is fixedly arranged in the telescopic tube, a first positioning assembly for shaping the contraction state of the telescopic tube is fixedly arranged on the outer wall of the telescopic tube, and a second positioning assembly for fixing the telescopic tube after bending the telescopic tube to a head-tail connected state is fixedly arranged between the outer walls of the two ends of the telescopic tube.

Preferably, the needle head assembly comprises a sleeve and a puncture needle, wherein the sleeve is of a Y shape, one end of the sleeve is fixedly connected with an indwelling hose, the other end of the contracting sleeve is provided with two Y-shaped branches, one Y-shaped branch is fixedly provided with a separation plug, the other Y-shaped branch is fixedly connected with the extension tube, and the puncture needle is inserted into the Y-shaped branch with the separation plug and penetrates through the sleeve.

Preferably, the liquid injection joint assembly comprises a joint body and a heparin cap fixedly connected with one end of the joint body, and the other end of the joint body is fixedly connected with the extension tube.

Preferably, the telescopic tube is provided with three telescopic sections and four fixed sections, the telescopic sections and the fixed sections are arranged in a staggered manner, and the first positioning assembly comprises detachable connecting pieces fixedly arranged on each pair of adjacent fixed sections.

Preferably, the detachable connecting piece is a magnet which attracts each other.

Preferably, the second positioning component comprises a buckle and a clamping groove, and the buckle and the clamping groove are respectively and fixedly arranged on the fixing sections at two ends.

Preferably, the inner diameter of the telescopic tube is greater than 3 times of the inner diameter of the extension tube.

Preferably, the elastic shaping piece is a spring, the telescopic section is spiral, and the spring is embedded in a groove of the telescopic section and sleeved outside the extension tube.

Preferably, the telescopic tube is a transparent plastic piece.

Preferably, a needle cap for isolating the puncture needle is detachably connected to the end of the cannula.

Compared with the prior art, the indwelling needle provided by the application has the beneficial effects that:

1. through set up a flexible pipe and design through elastic shaping piece outside the extension pipe, elastic shaping piece can design the extension pipe when the infusion, makes the extension pipe can not take place to buckle and stop up the flow of liquid medicine.

2. Through the shrink of flexible pipe for the extension pipe can be accomodate in the extension pipe after the shrink, and can realize the fixed of flexible pipe after the shrink through first locating component and second locating component, make needle assembly, annotate liquid joint component and extension pipe comparatively inseparable fixing on patient's skin, make the activity health that the patient can be better.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application, are incorporated in and constitute a part of this specification. The drawings and their description are illustrative of the application and are not to be construed as unduly limiting the application. In the drawings:

FIG. 1 is an overall block diagram of the present application;

FIG. 2 is an enlarged view of the structure of FIG. 1A in accordance with the present application;

FIG. 3 is an enlarged view of the structure of FIG. 1B in accordance with the present application;

FIG. 4 is an exploded view of the overall structure of the present application;

fig. 5 is a cross-sectional view of the present application.

Wherein: 1. an extension tube; 2. a telescopic tube; 3. a sleeve; 4. a puncture needle; 5. a retention hose; 6. a spacer plug; 7. a connector body; 8. a heparin cap; 9. a telescoping section; 10. a fixed section; 11. a magnet; 12. a buckle; 13. a clamping groove; 14. a spring; 15. a needle cap.

Detailed Description

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present application and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

Embodiment one:

as shown in fig. 1 to 5, an indwelling needle comprises a needle assembly and a liquid injection joint assembly, wherein the needle assembly is fixedly connected with the liquid injection joint assembly through an extension tube 1, a storage support assembly is fixedly connected between the needle assembly and the liquid injection joint assembly, the storage support assembly comprises a telescopic tube 2 fixedly connected between the needle assembly and the liquid injection joint assembly and sleeved outside the extension tube 1, an elastic shaping piece is fixedly arranged in the telescopic tube 2, a first positioning assembly for shaping the contraction state of the telescopic tube 2 is fixedly arranged on the outer wall of the telescopic tube 2, and a second positioning assembly for fixing the telescopic tube 2 after bending to a head-tail connected state is fixedly arranged between the outer walls of the two ends of the telescopic tube 2; when the infusion device works, the extension tube 1 is wrapped inside by the elastic shaping piece and the extension tube 2, when a patient needs infusion, the first positioning assembly and the second positioning assembly are not in a positioning state, the extension tube 2 is in an extension state under the action of the elastic force of the elastic shaping piece, and as the extension tube 2 and the spring 14 have certain bending resistance, the extension tube 1 can be kept stable under the action of the elastic force of the extension tube 2 and the spring 14 even if the patient performs activities such as feeding or going to a toilet, so that the extension tube 1 is always in a smooth passing state during infusion and is not easy to bend to block the flow of liquid medicine; when the patient is not in the infusion state and the indwelling needle remains in the blood vessel, the telescopic tube 2 is manually contracted, the extension tube 1 can be contained in the space inside the telescopic tube 2 and is bent, the elastic shaping piece is compressed after the telescopic tube 2 is compressed, and then the elastic shaping piece is required to be fixed through the first positioning piece, so that the telescopic tube 2 is prevented from being elastically stretched and reset under the action of the elastic force of the elastic shaping piece, meanwhile, in order to enable the structure of the extension tube 1 to be more compact, the telescopic tube 2 can be bent, the head and the tail of the telescopic tube 2 are enabled to be in contact, then the head and the tail of the telescopic tube 2 are fixed through the second positioning piece, elastic reset of the bent telescopic tube 2 is avoided, and after the telescopic tube 2 is fixed through the first positioning piece and the second positioning piece, the telescopic tube 2, the extension tube 1, the liquid injection joint piece and the needle head assembly are all in a relatively stable state, the space positions of the four are very compact, and the four are conveniently fixed through adhesive tapes, so that the four can be attached to the skin of a patient smoothly, and the patient can move.

The needle head assembly comprises a sleeve 3 and a puncture needle 4, wherein the sleeve 3 is of a Y shape, one end of the sleeve 3 is fixedly connected with a retention hose 5, the other end of the shrinkage sleeve 3 is provided with two Y-shaped branches, one Y-shaped branch is fixedly provided with a separation plug 6, the other Y-shaped branch is fixedly connected with the extension tube 1, the puncture needle 4 is inserted into the Y-shaped branch with the separation plug 6 and penetrates through the sleeve 3, and the end part of the sleeve 3 is detachably connected with a needle cap 15 for separating the puncture needle 4; in operation, the cap 15 is removed, the puncture needle 4 is inserted into the vein of the patient, and the puncture needle 4 is withdrawn, the indwelling tube 5 is left in the vein, and the isolation plug 6 is used to prevent the outflow of the drug solution.

The liquid injection joint assembly comprises a joint body 7 and a heparin cap 8 fixedly connected to one end of the joint body 7, and the other end of the joint body 7 is fixedly connected with the extension tube 1; during operation, insert the notes liquid head in from heparin cap 8 for liquid medicine can flow into extension tube 1, and then flows into patient's vein through keeping somewhere hose 5, and heparin cap 8 can realize keeping apart sealedly, guarantees that annotate liquid joint assembly department is difficult for receiving the pollution.

The telescopic pipe 2 is provided with three telescopic sections 9 and four fixed sections 10, the telescopic sections 9 and the fixed sections 10 are arranged in a staggered manner, the first positioning component comprises detachable connecting pieces fixedly arranged on each pair of adjacent fixed sections 10, and the detachable connecting pieces are mutually attracted magnets 11; when the telescopic pipe 2 is required to be prolonged in operation, the telescopic pipe 2 is pulled, the magnet 11 is separated, when the telescopic pipe 2 is required to be stored, the telescopic pipe 2 is extruded, the magnets 11 are close to each other, attractive force between the magnets 11 is larger than elastic force of the elastic shaping piece, the telescopic pipe 2 can be kept in a contracted state, the detachable connecting piece can be any connecting piece capable of realizing mutual fixation of the fixing sections 10, for example, a damping piece with damping force larger than that of the elastic shaping piece is adopted.

The second positioning assembly comprises a buckle 12 and a clamping groove 13, and the buckle 12 and the clamping groove 13 are respectively and fixedly arranged on the fixing sections 10 at the two ends; when the telescopic pipe 2 is connected with the second positioning piece, the telescopic section 9 between the second section fixing section 10 and the third section fixing section 10 is not in an extension state, the telescopic pipe 2 can be normally bent, the bent telescopic pipe 2 has elastic force, the head and the tail can be mutually far away, at the moment, the fixation between the two ends is realized through the buckle 12 and the clamping groove 13, and the elastic restoring force of the telescopic pipe 2 is overcome.

The inner diameter of the telescopic pipe 2 is 3 times larger than that of the extension pipe 1; when the telescopic tube 1 is contracted, the telescopic tube 1 can be bent or wound in the telescopic tube 2, the larger the inner diameter of the telescopic tube 2 is, the shorter the length required by the fixed section 10 is, so that the telescopic tube 2 after contraction is shorter in length, the structure is more compact, and when the inner diameter of the telescopic tube 2 is more than three times of the inner diameter of the telescopic tube 1, the length of the telescopic tube 1 after contraction can be reduced to be less than one fifth of the length in an extension state.

The elastic shaping piece is a spring 14, the telescopic section 9 is spiral, and the spring 14 is embedded in a groove of the telescopic section 9 and sleeved outside the extension tube 1; in operation, the spring 14 can be a plastic member, and the spring 14 is embedded in the spiral groove, so that the spring 14 is more stable.

The telescopic tube 2 is a transparent plastic piece, and when the telescopic tube 2 works, a patient can observe the transfusion state conveniently.

Embodiment two: the difference between this embodiment and the first embodiment is that: the telescopic pipe 2 is connected between the liquid injection joint assembly and the needle head assembly in a detachable mode together with the first positioning assembly and the second positioning assembly on the telescopic pipe 2, the indwelling needle is a disposable object during operation, the indwelling needle can be used as medical waste to be discarded after being used, the telescopic pipe 2 can be detached at the moment, and the telescopic pipe 2 can be recycled after being disinfected.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. The utility model provides a keep somewhere needle, includes needle subassembly, annotates liquid joint assembly, the needle subassembly with annotate through extension tube (1) fixed connection between the liquid joint assembly, its characterized in that: the utility model discloses a syringe needle subassembly, annotate liquid joint subassembly, joint subassembly and support subassembly are accomodate to joint subassembly are including fixed connection syringe needle subassembly with annotate between the liquid joint subassembly and the cover is established extension pipe (1) outside flexible pipe (2), the inside fixed mounting of flexible pipe (2) has elastic shaping spare, the outer wall of flexible pipe (2) is fixed to be provided with and is used for right flexible pipe (2) shrink state carries out the first locating component of design, fixed being provided with is used for with between the outer wall at flexible pipe (2) both ends flexible pipe (2) is buckled to carry out fixed second locating component after the end to end phase state.

2. An indwelling needle according to claim 1, in which: the needle head assembly comprises a sleeve (3) and a puncture needle (4), wherein the sleeve (3) is of a Y shape, one end of the sleeve (3) is fixedly connected with a retaining hose (5), the other end of the shrinkage sleeve (3) is provided with two Y-shaped branches, one Y-shaped branch is fixedly provided with a separation plug (6), the other Y-shaped branch is fixedly connected with the extension tube (1), and the puncture needle (4) is inserted into the Y-shaped branch with the separation plug (6) and penetrates through the sleeve (3).

3. An indwelling needle according to claim 2, in which: the liquid injection joint assembly comprises a joint body (7) and a heparin cap (8) fixedly connected with one end of the joint body (7), and the other end of the joint body (7) is fixedly connected with the extension tube (1).

4. An indwelling needle according to claim 1, in which: the telescopic pipe (2) is provided with three telescopic sections (9) and four fixed sections (10), the telescopic sections (9) and the fixed sections (10) are arranged in a staggered mode, and the first positioning component comprises detachable connecting pieces fixedly arranged on each pair of adjacent fixed sections (10).

5. An indwelling needle according to claim 4, in which: the detachable connecting piece is a magnet (11) which attracts each other.

6. An indwelling needle according to claim 4, in which: the second positioning assembly comprises a buckle (12) and a clamping groove (13), and the buckle (12) and the clamping groove (13) are respectively and fixedly arranged on the two ends of the fixing section (10).

7. An indwelling needle according to claim 4, in which: the inner diameter of the telescopic pipe (2) is 3 times larger than that of the extension pipe (1).

8. An indwelling needle according to claim 4, in which: the elastic shaping piece is a spring (14), the telescopic section (9) is in a spiral shape, and the spring (14) is embedded in a groove of the telescopic section (9) and sleeved outside the extension tube (1).

9. An indwelling needle according to claim 1, in which: the telescopic pipe (2) is a transparent plastic piece.

10. An indwelling needle according to claim 1, in which: the end part of the sleeve (3) is detachably connected with a needle cap (15) for isolating the puncture needle (4).