CN209916919U

CN209916919U - Indwelling needle

Info

Publication number: CN209916919U
Application number: CN201920326208.0U
Authority: CN
Inventors: 徐会斌; 王昊
Original assignee: JIANGXI FENGLIN MEDICAL TECHNOLOGY Co Ltd; Nanchang Fenglin Medical Equipment Technology Co Ltd; JIANGXI FENGLIN MEDICAL APPLIANCE CO Ltd
Current assignee: JIANGXI FENGLIN MEDICAL TECHNOLOGY Co Ltd; Nanchang Fenglin Medical Equipment Technology Co Ltd; JIANGXI FENGLIN MEDICAL APPLIANCE CO Ltd
Priority date: 2019-03-14
Filing date: 2019-03-14
Publication date: 2020-01-10
Anticipated expiration: 2029-03-14

Abstract

The utility model provides a remaining needle, which comprises a hose seat, a hose arranged at one end of the hose seat, a transfusion joint arranged at one side of the hose seat, and a needle seat detachably connected with the hose seat, wherein the needle seat is provided with a puncture needle, the puncture needle is provided with a convex hull, the remaining needle also comprises a protection component, the protection component is arranged between the hose seat and the needle seat, the protection component comprises a clamping seat and an elastic sheet arranged in the clamping seat, the clamping seat is provided with an opening, and a clamping groove is correspondingly arranged on the hose seat, a through groove is arranged on the elastic sheet, a through hole is arranged at one end of the elastic sheet, one end of the elastic sheet close to the through hole is clamped on the clamping seat, when the puncture needle is not pulled out, the puncture needle sequentially passes through the clamping seat, the through hole, the hose seat and the hose, and extend to the outside of the hose, the clamping seat part is accommodated in the hose seat, and one end of the elastic sheet far away from the through hole passes through the opening of the clamping seat and is clamped on the inner wall of the clamping groove. The remaining needle of the utility model has the function of preventing the puncture needle from hurting medical care personnel, thereby causing cross infection.

Description

Indwelling needle

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a keep somewhere needle.

Background

Patients often need intravenous infusion therapy clinically, and the use of scalp steel needles is limited to short-term or single-dose administration, or collection of blood samples, or infusion of blood, etc. In order to satisfy intermittent, continuous or daily intravenous infusion treatment, reduce the number of times of venous vessel puncture of patients and relieve pain of patients caused by acupuncture, a venous indwelling needle is generally used.

The venous indwelling needle currently used in the market generally comprises a protective sleeve, a flexible pipe and a puncture needle. When the puncture needle is used clinically, the puncture needle pierces into a vein, the hose is introduced into the vein in an auxiliary mode, the puncture needle is drawn out after blood return confirms that the vein puncture is successful, the hose is suspended in the vein, and therefore a medicament can be injected into the vein through the hose or blood can be extracted from the vein.

However, in the prior art, after the venous indwelling needle is clinically used and the puncture needle is drawn out, the needle tip of the puncture needle is exposed outside without any protective measures, so that medical workers are easily stabbed by the contaminated needle tip carelessly in operation to cause virus cross infection, and the consequences are more serious if patients suffer from infectious diseases. Clinically, accidental acupuncture is a long-standing and difficult-to-avoid problem. Meanwhile, the discarded exposed puncture needle also causes environmental pollution, thereby increasing the difficulty of specially treating medical wastes.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing an indwelling needle to solve the technical problem that the venous indwelling needle in the prior art easily leads to medical personnel to be stabbed by the needle point and causes virus cross infection after taking out the pjncture needle.

An indwelling needle comprises a hose seat, a hose arranged at one end of the hose seat, an infusion connector arranged at one side of the hose seat, and a needle seat detachably connected with the hose seat, wherein a puncture needle is arranged on the needle seat, a convex hull is arranged on the puncture needle, the indwelling needle further comprises a protection component, the protection component is arranged between the hose seat and the needle seat, the protection component comprises a clamping seat and a spring sheet arranged in the clamping seat, a through groove is arranged on the spring sheet, a through hole is arranged at one end of the spring sheet, one end of the spring sheet close to the through hole is fixedly arranged in the clamping seat, an opening is arranged on the clamping seat, a clamping groove is correspondingly arranged on the hose seat, and when the puncture needle is not pulled out, the puncture needle sequentially penetrates through the clamping seat, the through hole, the hose seat and the hose and extends out of the hose, the other end of the elastic sheet far away from the through hole penetrates through the opening and is clamped on the clamping groove, the clamping seat is partially contained in the hose seat, after the puncture needle is pulled out, the other end of the elastic sheet far away from the through hole is ejected back into the clamping seat, the puncture needle penetrates through the through groove, and the needle point of the puncture needle is limited by the convex hull and contained in the clamping seat under the resisting of the elastic sheet.

The needle is kept somewhere to the aforesaid, through set up a protection subassembly between hose seat and needle file, the protection subassembly includes the cassette and locates the shell fragment in the cassette, the extrusion through the pjncture needle on the needle file makes the one end of shell fragment pass the opening on the cassette, the card is established in the draw-in groove of hose seat, make hose seat and cassette link as an organic whole, extract the back with the pjncture needle on the needle file from the hose seat, because the shell fragment no longer receives the extrusion of pjncture needle and kick-backs, and make hose seat and cassette separation, the needle point part of pjncture needle is acceptd in the cassette, thereby can make the protection subassembly link as an organic whole and throw away into medical waste case through pjncture needle and needle file, the needle point of pjncture needle does not expose.

Furthermore, the clamping seat is cylindrical, the clamping seat comprises a first seat body and a second seat body, the outer diameter of the first seat body is smaller than that of the second seat body, the elastic sheet penetrates through the cavity of the first seat body and the cavity of the second seat body, the opening is formed in the first seat body, and when the puncture needle is not pulled out, the first seat body is contained in the hose seat.

Furthermore, a limiting column is arranged in the clamping seat, the puncture needle penetrates through the limiting column, a clamping groove is formed in the joint of the limiting column and the clamping seat, and one end, close to the through hole, of the elastic sheet is clamped in the clamping groove.

Furthermore, one end of the limiting column close to the elastic sheet is wedge-shaped.

Further, the shell fragment is including the joint piece, trompil piece, connecting block, fluting piece, the piece of buckling and the card that connects gradually establish the piece, trompil piece connect perpendicularly in the joint piece with between the connecting block, the joint piece card is located on the cassette, be equipped with on the trompil piece the clearing hole, the bending piece connect in the fluting piece with between the card establishes the piece, card establish the piece with contained angle between the bending piece is the obtuse angle, be equipped with on the fluting piece pass through the groove, do not extract during the pjncture needle, the card establishes the piece card and locates on the inner wall of draw-in groove.

Further, the fluting piece is including the first fluting portion and the second fluting portion that connect gradually, first fluting portion with contained angle between the second fluting portion is the obtuse angle, first fluting portion with the piece of buckling is connected, the second fluting portion with the connecting block is connected, just the second fluting portion with contained angle between the connecting block is the obtuse angle, be waist shape through the groove, run through the groove first fluting portion and extend to the second fluting portion.

Furthermore, the tail end of the elastic sheet far away from the through hole is provided with an elastic abutting block, and when the puncture needle is not pulled out, the elastic abutting block abuts against the inner wall of the clamping groove.

Further, the end of the abutting block faces the cavity of the clamping seat.

Furthermore, a stop block is further arranged at one end, far away from the through hole, of the elastic sheet, and the stop block is perpendicular to the elastic sheet.

Furthermore, when the puncture needle is not pulled out, the needle seat cover is arranged on the hose seat and covers the protection component.

Drawings

FIG. 1 is a schematic structural view of an indwelling needle according to a first embodiment of the present invention;

FIG. 2 is an enlarged view taken at I in FIG. 1;

FIG. 3 is an exploded view of the indwelling needle of FIG. 1;

FIG. 4 is an enlarged view taken at II in FIG. 3;

figure 5 is a cross-sectional view of a cartridge in a first embodiment of the invention;

fig. 6 is a schematic structural view of a spring piece in the first embodiment of the present invention.

Description of the main element symbols:

the following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, 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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 6, an indwelling needle according to a first embodiment of the present invention includes a hose holder 10, an infusion connector 20 disposed at one side of the hose holder 10, a needle holder 30, a protection assembly 40, and a sheath 50. The hose 11 is arranged on the hose seat 10, the puncture needle 31 is arranged on the needle seat 30, and the convex hull 311 is arranged on the puncture needle 31.

The hose 11 is arranged at one end of the hose seat 10, the puncture needle 31 is used for puncturing the vein, the hose 11 is assisted to be punctured into the vein of the human body, the protective sleeve 50 is sleeved on the hose seat 10 and covers the hose 11 and the puncture needle 31, and pollution, damage or puncture danger to medical personnel when the indwelling needle is not used are prevented. The hose 11 is mounted on the hose seat 10 through the rivet 12, and the hose seat 10 is further provided with an isolating plug 13 inside for forming an inner cavity passage for transfusion, blood collection and the like after the puncture needle 31 is pulled out, and effectively preventing air, bacteria and the like from entering the inner cavity.

The infusion connector 20 is used for connecting infusion, blood collection, and other systems during infusion, and the infusion connector 20 is connected to the hose base 10 via an infusion hose 21. The infusion connector 20 is further provided with a water stop clip 60, and the water stop clip 60 is provided to control the flow of the liquid medicine in the infusion hose 21.

The needle holder 30 is provided with a puncture needle 31, and when the indwelling needle is not used, the puncture needle 31 sequentially penetrates through the protective component 40 and the hose holder 10, and extends into the hose 11 and out of the hose 11 to assist in puncturing the hose 11 into a vein. In addition, a convex hull 311 is arranged at one end of the puncture needle 31 close to the needle point, and the puncture needle 31 is limited to be separated from the clamping seat 40 by the convex hull 311.

The protection assembly 40 is arranged between the hose seat 10 and the needle seat 30, and is used for wrapping the needle tip of the puncture needle 31 after the indwelling needle is used, and preventing the needle tip of the puncture needle 31 from being exposed in the air after the indwelling needle is used, so that the medical staff is prevented from being hurt. After the indwelling needle is used, the protective component 40 is detached from the hose mount 10 along with the piercing needle 31 and the needle mount 30.

Specifically, the protection component 40 includes a card seat 41 and a spring 42 disposed in the card seat 41. An opening 411 is formed on the clamping seat 41, and a clamping groove 14 is correspondingly formed on the hose seat 10. The elastic sheet 42 is provided with a through groove 421, one end of the elastic sheet 42 is provided with a through hole 422, one end of the elastic sheet 42 close to the through hole 422 is clamped on the clamping seat 41, when the puncture needle 31 is not pulled out, the puncture needle 31 sequentially penetrates through the clamping seat 41, the through hole 422, the hose seat 10 and the hose 11 and extends out of the hose 11, the clamping seat 41 is partially accommodated in the hose seat 10, and the puncture needle 31 extrudes the elastic sheet 42, so that the other end of the elastic sheet 42 far away from the through hole 422 penetrates through the opening 411 and is clamped on the inner wall of the clamping groove 14. After the puncture needle 31 is pulled out, the puncture needle 31 passes through the through groove 421, the needle point of the puncture needle 31 is contained in the clamping seat 41 under the limitation of the convex hull 311 and the resisting of the elastic sheet 42, the other end of the elastic sheet 42 is contracted back into the clamping seat 41 from the clamping groove 14 and the opening 411, and the clamping seat 41 is separated from the hose seat 10.

Specifically, the clamping seat 41 is cylindrical, the clamping seat 41 includes a first seat 412 and a second seat 413, an outer diameter of the first seat 412 is smaller than an outer diameter of the second seat 413, the elastic sheet 42 penetrates through a cavity of the first seat 412 and a cavity of the second seat 413, the opening 411 is disposed on the first seat 412, and when the puncture needle 31 is not pulled out, the first seat 412 is accommodated in the hose seat 10. After the puncture needle is pulled out, the clamping seat 41 is separated from the hose seat 10, that is, the first seat body 412 is separated from the hose seat 10.

In addition, since the puncture needle 31 needs to pass through the card holder 41, in order to ensure that the puncture needle 31 passes through the card holder 41 in the card holder 41 along the linear direction, a limiting column 414 is arranged in the card holder 41, the puncture needle 31 passes through the limiting column 414, a clamping groove 415 is arranged at the connection part of the limiting column 414 and the card holder 41, and one end of the elastic sheet 42 close to the through hole 422 is clamped in the clamping groove 415.

Further, in order to match the shape of the elastic sheet 42, one end of the limiting column 414 close to the elastic sheet 42 is wedge-shaped.

In this embodiment, the elastic piece 42 includes a clamping block 423, an opening block 424, a connecting block 425, a slotting block 426, a bending block 427, and a clamping block 428, which are connected in sequence, the opening block 424 is vertically connected between the clamping block 423 and the connecting block 425, the clamping block 423 is clamped on the clamping base 41, the opening block 424 is provided with the through hole 422, the bending block 427 is connected between the slotting block 426 and the clamping block 428, an included angle between the clamping block 428 and the bending block 427 is an obtuse angle, the slotting block 426 is provided with the through groove 421, and the clamping block 428 is clamped on an inner wall of the clamping groove 415 when the puncture needle is not pulled out.

Further, the grooving block 426 includes a first grooving portion 4261 and a second grooving portion 4262 which are connected in sequence, an included angle between the first grooving portion 4261 and the second grooving portion 4262 is an obtuse angle, the first grooving portion 4261 is connected with the bending block 427, the second grooving portion 4262 is connected with the connecting block 425, an included angle between the second grooving portion 4262 and the connecting block 425 is an obtuse angle, the passing groove 421 is waist-shaped, and the passing groove 421 penetrates through the first grooving portion 4261 and extends to the second grooving portion 4262.

Meanwhile, in order to improve the practicability of the whole protection assembly 40, the end of the elastic sheet 42 far away from the through hole 422 is also provided with an elastic abutting block 43, and when the puncture needle 31 is not pulled out, the elastic abutting block 43 abuts against the inner wall of the clamping groove 415 after passing through the opening 411.

Further, in the present embodiment, the end of the abutting block 43 faces into the cavity of the clamping seat 41. In other embodiments, the end of the abutment block 43 may face away from the cavity of the cartridge 41.

In addition, a stop 44 is further disposed at an end of the elastic sheet 42 away from the through hole 422, and the stop 44 is disposed perpendicular to the elastic sheet 42. In the embodiment, the stopper 44 is disposed on the first slot portion 4261 and perpendicular to the first slot portion 4261, and the stopper 44, the first slot portion 4261 and the locking block 428 enclose a containing space. The stop 44 is used to block the tip of the needle 31 to reduce the risk of cross-contamination of the blood source due to exposure of the needle tip.

It can be understood that, in order to ensure the safety of the indwelling needle in use, the needle holder 30 is covered on the hose holder 10 and covers the protective assembly 40 when the puncture needle 31 is not pulled out.

The use process of the indwelling needle comprises the following steps: the sheath 50 is taken off, the puncture needle 31 is inserted into the vein of the patient by hand, after the blood return is observed, the hose 11 is slowly inserted into the vein of the patient by the other hand, the needle seat 30 is held at the same time, the puncture needle 31 is slowly pulled out of the hose seat 10 until the puncture needle is separated from the hose seat 10, at the moment, the hose 11 is kept in the vein of the patient, the hose seat 10 and other components are kept on the patient, and after the puncture needle 31 is separated from the hose seat 10, the end of the elastic sheet 42 far away from the through hole 422 can not be squeezed by the puncture needle 31 to be clamped in the opening 411 and the clamping groove 14, so that the clamping seat 41 in the protection assembly 40 is separated from the hose seat 10, and the protection assembly 40 is separated from the hose seat 10. Meanwhile, the convex hull 311 is arranged on the puncture needle 31, so that the puncture needle 31 is prevented from being continuously pulled out, the needle tip part of the puncture needle 31 is continuously kept in the clamping seat 41, the end of the elastic sheet 42 far away from the through hole 422 cannot be extruded by the puncture needle 31 any more, and then rebounds, so that the clamping seat 41 is smoothly separated from the hose seat 10, meanwhile, the puncture needle 31 is blocked by the bending block 427 of the elastic sheet 41 and cannot penetrate out of the clamping seat 41 any more, further, the protection component 40 is connected with the needle seat 30 through the puncture needle 31 and pulled out, the clamping seat 41, the puncture needle 31 and the needle seat 30 can be thrown into a medical garbage box, and the needle tip of the puncture needle 31 is accommodated in the clamping seat 41 and is not exposed, so that the medical staff cannot be hurt.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, which are described in detail and detail, but should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An indwelling needle, comprising a hose base, a hose arranged at one end of the hose base, an infusion connector arranged at one side of the hose base, and a needle base detachably connected with the hose base, wherein a puncture needle is arranged on the needle base, and a convex hull is arranged on the puncture needle, the indwelling needle is characterized by also comprising a protection component, the protection component is arranged between the hose base and the needle base, the protection component comprises a clamping base and a spring plate arranged in the clamping base, a through groove is arranged on the spring plate, a through hole is arranged at one end of the spring plate, one end of the spring plate close to the through hole is fixedly arranged in the clamping base, an opening is arranged on the clamping base, a clamping groove is correspondingly arranged on the hose base, and when the puncture needle is not pulled out, the puncture needle sequentially passes through the clamping base, the through hole, the hose base and the hose, the puncture needle is inserted into the through groove, the other end of the elastic sheet far away from the through hole penetrates through the opening and is clamped on the clamping groove, the clamping seat is partially accommodated in the hose seat, after the puncture needle is pulled out, the other end of the elastic sheet far away from the through hole is ejected back into the clamping seat, the puncture needle penetrates through the through groove, and the needle point of the puncture needle is accommodated in the clamping seat under the limitation of the convex hull and the resisting of the elastic sheet.

2. The indwelling needle of claim 1, wherein the clamping seat is cylindrical, the clamping seat comprises a first seat body and a second seat body, the outer diameter of the first seat body is smaller than that of the second seat body, the spring plate penetrates through the cavity of the first seat body and the cavity of the second seat body, the opening is formed in the first seat body, and the first seat body is accommodated in the hose seat when the puncture needle is not pulled out.

3. The indwelling needle according to claim 1, wherein a limiting post is provided in the holder, the puncture needle passes through the limiting post, a slot is provided at the connection of the limiting post and the holder, and one end of the resilient plate close to the through hole is clamped in the slot.

4. The indwelling needle according to claim 3, wherein the end of the restraining post adjacent to the resilient tab is wedge-shaped.

5. The indwelling needle according to claim 1, wherein the resilient tab comprises a locking piece, a hole-opening piece, a connecting block, a notch piece, a bending piece and a clamping piece, which are connected in sequence, the hole-opening piece is vertically connected between the locking piece and the connecting block, the locking piece is clamped on the locking seat, the hole-opening piece is provided with the through hole, the bending piece is connected between the notch piece and the clamping piece, the included angle between the clamping piece and the bending piece is an obtuse angle, the notch piece is provided with the through groove, and the clamping piece is clamped on the inner wall of the clamping groove when the puncture needle is not pulled out.

6. The indwelling needle according to claim 5, wherein the slotted block comprises a first slotted portion and a second slotted portion connected in series, the angle between the first slotted portion and the second slotted portion is an obtuse angle, the first slotted portion is connected with the bending block, the second slotted portion is connected with the connecting block, the angle between the second slotted portion and the connecting block is an obtuse angle, the passing groove is kidney-shaped, the passing groove penetrates through the first slotted portion and extends to the second slotted portion.

7. The indwelling needle according to claim 1, wherein the end of the resilient tab remote from the aperture is provided with a resilient abutment which abuts against the inner wall of the notch when the puncture needle is not withdrawn.

8. The indwelling needle of claim 7, wherein the distal end of the abutment block faces into the cavity of the cartridge.

9. The indwelling needle according to claim 1, wherein a stop is provided at the end of the resilient sheet remote from the aperture, the stop being disposed perpendicular to the resilient sheet.

10. The indwelling needle according to claim 1, wherein the hub cap is mounted on the hose mount and covers the protective assembly when the puncture needle is not withdrawn.