CN210750645U

CN210750645U - Indwelling needle device

Info

Publication number: CN210750645U
Application number: CN201921410389.1U
Authority: CN
Inventors: 梅孟雪
Original assignee: Individual
Current assignee: Second Affiliated Hospital to Nanchang University
Priority date: 2019-08-28
Filing date: 2019-08-28
Publication date: 2020-06-16
Anticipated expiration: 2029-08-28

Abstract

The utility model relates to an indwelling needle device, including a catheter subassembly and insert the needle tubing subassembly of locating in the catheter subassembly, the catheter subassembly includes a pipe seat and the pipe that is linked together with the one end of pipe seat, the pipe seat is linked together with a branch pipe, spacing recess has been seted up towards one side of needle tubing subassembly at the pipe seat, the needle tubing subassembly is including the spacing boss portion that connects gradually, the portion of gripping and locate the free terminal blood return window of the portion of gripping, free end and the fixed intercommunication setting of a needle tubing at spacing boss portion, the needle tubing extends to in the blood return window from spacing boss portion, and the needle tubing is used for running through in the pipe, spacing boss portion is used for the card to establish in spacing recess, in order to be connected the needle tubing subassembly with the catheter subassembly. The utility model provides a keep somewhere needle device pipe length and reach 50~70mm, improved the upper arm venipuncture success rate to be convenient for observe blood return.

Description

Indwelling needle device

Technical Field

The utility model relates to the technical field of medical equipment, in particular to keep somewhere needle device.

Background

In recent years, contrast enhanced scanning imaging techniques have been widely used in the medical field. Clinical practice fully proves that: enhanced scanning significantly improves the resolution of certain organ examinations and the diagnostic accuracy. The contrast enhanced scan is performed by injecting a certain amount of iodine-containing water-soluble contrast agent intravenously, and the intravenous contrast agent requires high pressure and high flow rate injection, so that the requirement on veins is high, and veins which are thick, straight and have good elasticity are required.

As the nurse needs to carry out the venipuncture operation for hundreds of times every day when the contrast agent is injected, the nursing time is greatly increased, and the working efficiency is reduced when the nurse encounters some difficult punctures. In order to solve the problem, an indwelling needle puncture technology under ultrasonic guidance in the prior art is adopted.

However, in practical use, because the eyes of the operator need to be closely focused on the screen during the ultrasonic puncture, the blood return of the existing indwelling needle is generally at the position of the catheter, the visual field at the position of the catheter is blocked by the hand during the ultrasonic puncture, and the blood return at the position of the catheter is not easy to be observed when the blood return exists, which affects the practical application.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model discloses an in order to solve current indwelling needle device, the problem of the blood return of being not convenient for observe.

The utility model provides an indwelling needle device, wherein, locate including a catheter subassembly and insert needle tubing assembly in the catheter subassembly, the catheter subassembly include a pipe seat and with the pipe that the one end of pipe seat is linked together, the pipe seat is linked together with a branch pipe the pipe seat orientation spacing recess has been seted up to one side of needle tubing assembly, the needle tubing assembly is including the spacing boss portion that connects gradually, the portion of gripping and locating the free terminal blood return window of the portion of gripping the free end of spacing boss portion sets up with the fixed intercommunication of a needle tubing, the needle tubing follows spacing boss portion extends to in the blood return window, just the needle tubing is used for running through in the catheter, spacing boss portion is used for the card to establish in the spacing recess, with the needle tubing assembly with the catheter subassembly is connected.

The utility model provides an indwelling needle device, including interconnect's tubing subassembly and needle tubing subassembly in the utility model discloses in, the needle tubing passes spacing boss portion and portion of gripping in proper order, until reaching in returning the blood window, when using, in the above-mentioned needle tubing wears to locate the pipe, after needle tubing and pipe entered patient's vein, blood in the vein can enter into returning the blood window through the transmission of needle tubing, because the position of returning the blood window is not kept off by operator's hand, therefore can be convenient for the operator to observe whether there is blood return; in addition, the liquid medicine can be input into the vein of the patient through the catheter by the joint of the branch pipe, and the indwelling function is realized.

The indwelling needle device, wherein the catheter hub includes a catheter hub proximal portion and a catheter hub distal portion connected to each other, the catheter is connected to the catheter hub proximal portion, the branch pipe communicates with the catheter hub proximal portion, and the catheter hub distal portion is provided to be hollow.

The indwelling needle device is characterized in that a push rod part is fixedly arranged on the periphery of the distal end part of the catheter base, a catheter base joint sheet is fixedly connected to the free tail end of the distal end part of the catheter base, and the catheter base joint sheet is annular.

The indwelling needle device is characterized in that a soft plug and a limiting convex ring are further arranged in the catheter base, the limiting convex ring is arranged between the soft plug and the limiting groove, the limiting convex ring is arranged on the inner wall of the distal end part of the catheter base, the limiting convex ring is in a hollow annular shape, and the limiting convex ring is used for clamping an anti-acupuncture X-shaped elastic sheet.

The indwelling needle device is characterized in that a thumb clamp is arranged on the periphery of the branch pipe, and an infusion connector is arranged at the free tail end of the branch pipe.

The indwelling needle device is characterized in that a needle tube rolling trace part is arranged on the needle tube and is positioned at one side close to the free tail end of the needle tube, the needle tube rolling trace part is sleeved with the anti-needling X-shaped elastic sheet, and the anti-needling X-shaped elastic sheet is used for opening the front end of the anti-needling X-shaped elastic sheet when the needle tube moves forwards relative to the anti-needling X-shaped elastic sheet; when the needle tube moves backwards relative to the anti-needling X-shaped elastic sheet, the front end of the anti-needling X-shaped elastic sheet is closed.

The diameter of the limiting convex ring is larger than the diameter of the anti-needling X-shaped elastic sheet when the front end of the anti-needling X-shaped elastic sheet is closed, and is smaller than the diameter of the anti-needling X-shaped elastic sheet when the front end of the anti-needling X-shaped elastic sheet is opened.

Keep somewhere the needle device, wherein the outer terminal surface of spacing boss portion still fixedly is equipped with the backstop piece spacing boss portion and the position that portion is connected is held is equipped with a needle tube seat laminating piece, needle tube seat laminating piece be used for when carrying out the assembly with catheter seat laminating piece laminates mutually.

The indwelling needle device is characterized in that the length range of the catheter is 50-70 mm, and the catheter is made of a polyurethane material.

The indwelling needle device, wherein a rice distance from the needle tip of the needle tube to the catheter is 0.8 mm.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic view of the overall structure of an indwelling needle device according to an embodiment of the present invention;

FIG. 2 is an exploded view of the indwelling needle device shown in FIG. 1;

FIG. 3 is an enlarged view showing the structure of a catheter assembly in the indwelling needle device shown in FIG. 2;

FIG. 4 is a cross-sectional view of the catheter assembly of FIG. 3 (including the anti-needle X-shaped spring);

FIG. 5 is an enlarged view showing the structure of the needle tube assembly in the indwelling needle device shown in FIG. 2;

FIG. 6 is an enlarged view of the "V" portion of the needle cannula assembly shown in FIG. 5;

FIG. 7 is a cross-sectional view of the needle cannula assembly shown in FIG. 5.

The main symbols illustrate.

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. Preferred embodiments of the present invention are shown in the 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.

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.

In actual use, because the eyes of an operator need to be stared at the screen during ultrasonic puncture, the existing indwelling needle generally has blood return at a catheter, the visual field of the catheter is blocked by hands during ultrasonic puncture, and the existing indwelling needle is not easy to observe when the blood return exists at the catheter, so that the actual application is influenced.

In order to solve the technical problem, the present invention provides an indwelling needle device, please refer to fig. 1 to 7, for the indwelling needle device provided by the present invention, comprising a catheter component 11 and a needle tube component 21 inserted in the catheter component 11.

Referring to fig. 3 and 4, for the above-mentioned conduit assembly 11, the conduit assembly 11 includes a conduit seat 111 and a conduit 112 communicating with one end of the conduit seat 111. As shown in fig. 3, a branch pipe 114 is disposed on the outer periphery of the catheter hub 111, the branch pipe 114 is in communication with the catheter hub 111, and a stopper groove 117 is formed on the side of the catheter hub 111 facing the needle assembly 21.

For the catheter hub 111 described above, the catheter hub 111 includes a catheter hub proximal portion 1111 and a catheter hub distal portion 1112 that are coupled to each other. Specifically, the catheter 112 is connected to the catheter hub proximal portion 1111, and the branch tube 114 is in communication with the catheter hub proximal portion 1111. A thumb grip 1141 is provided around the outer periphery of the branch tube 114, and an infusion connector 1142 is provided at the free end of the branch tube 114. In the embodiment, the length of the conduit 112 ranges from 50 mm to 70mm, and the conduit 112 is made of polyurethane material.

Also secured to the outer periphery of catheter hub distal end portion 1112 is a push rod portion 113, where push rod portion 113 facilitates providing a point of force for an operator to separate catheter assembly 11 from needle cannula assembly 21. A catheter hub engagement flap 1110 is fixedly attached to the free end of the catheter hub distal portion 1112, the catheter hub engagement flap 1110 being annular.

In this embodiment, a soft plug 115 and a limiting convex ring 116 are further disposed in the catheter hub 111, and the limiting convex ring 116 is disposed between the soft plug 115 and the limiting groove 117. It should be noted that the catheter hub distal end portion 1112 is hollow, the limiting protruding ring 116 is disposed in the catheter hub distal end portion 1112, the limiting protruding ring 116 is hollow and annular, and the limiting protruding ring 116 is used for clamping a needle-prick-proof X-shaped elastic sheet 22.

Referring to fig. 5 to 7, for the needle tube assembly 21, the needle tube assembly 21 includes a limiting boss portion 211, a holding portion 212 and a blood returning window 213 disposed at a free end of the holding portion 212, which are connected in sequence.

The left end of the limiting boss part 211 is fixedly communicated with a needle tube 210, and the needle tube 210 extends from the limiting boss part 211 to the blood return window 213 so as to convey the blood return to the blood return window 213 for the observation of an operator. In practice, the needle cannula 210 is adapted to extend through the catheter 112, and the retention boss 211 is adapted to snap into the retention groove 117 to connect the needle cannula assembly 21 to the catheter assembly 11.

A syringe stitch 2101 is provided on a syringe 210 on the side near the free end of the syringe 210. In order to prevent the needle tube 210 from pricking, in the present embodiment, the needle tube stitching 2101 is sleeved with a needle-prick preventing X-shaped spring plate 22.

In practical applications, when the needle tube 210 moves forward relative to the anti-needle-prick X-shaped elastic sheet 22, the front end of the anti-needle-prick X-shaped elastic sheet 22 opens; when the needle tube 210 moves rearward relative to the anti-needle punch X-shaped spring 22, the front end of the anti-needle punch X-shaped spring 22 closes. Because the anti-needle-prick X-shaped elastic sheet 22 is clamped in the limiting convex ring 116, the diameter of the limiting convex ring 116 is larger than the diameter of the anti-needle-prick X-shaped elastic sheet 22 when the front end is closed and smaller than the diameter of the anti-needle-prick X-shaped elastic sheet 22 when the front end is opened. Therefore, when the needle tube 210 moves backward relative to the anti-needle-prick X-shaped elastic sheet 22, the front end of the anti-needle-prick X-shaped elastic sheet 22 is closed, and the anti-needle-prick X-shaped elastic sheet 22 can be pulled out from the limit convex ring 116.

As can be seen from fig. 6, a stop block 2111 is further fixedly provided on the outer end surface of the above-mentioned limit boss portion 211, a needle hub engaging piece 2121 is provided at a position where the limit boss portion 211 and the grip portion 212 are connected, and the needle hub engaging piece 2121 is adapted to engage with the catheter hub engaging piece 1110 in the assembling combination.

It should be noted that the length of the catheter of the 20G indwelling needle for injecting contrast medium in the prior art is only 30mm, the length is far not suitable for the use of the ultrasonic indwelling needle of the upper arm, and after the puncture to the vein, the catheter of the indwelling needle slides out of the vein due to the insufficient length of the catheter in the indwelling vein, and the condition occurs after the arm of the patient moves or the high-pressure injection.

To solve this problem, the catheter length of the indwelling needle is reset. Because the upper arm vein is deep and is positioned at the subcutaneous position of 10-15 mm, when the needle is inserted at an angle of 30 degrees during puncture, the catheter needs to be submerged for 10-30 mm under the skin to reach the target vein, and after the puncture is successful, the indwelling needle needs to be ensured to be positioned in the vein by more than 20 mm. The upper arm indwelling needle of the utility model has the length of the catheter reaching 50-70 mm.

It should be noted that the needle tip of the needle 210 is spaced a distance of 0.8mm from the catheter 112, and that a smaller distance may reduce the occurrence of the needle 210 being located in the blood vessel and the catheter 112 being located outside the blood vessel to a greater extent.

The utility model provides a keep somewhere needle device's specific use is roughly as follows:

① preparing articles including portable intravenous ultrasonic instrument 1, ultrasonic indwelling needle, chlorhexidine disinfectant, transparent film (6 × 7 cm), aseptic transparent probe sleeve, aseptic coupling agent, aseptic glove, and tourniquet;

② the patient is ready to lie down with arms extended 90, fully expose the upper arm, and tie a tourniquet at the armpit;

③ evaluation, wherein the B ultrasonic evaluation vein selects proper puncture vein and evaluates the depth and caliber of the vein;

④ sterilizing with chlorhexidine disinfectant solution (10 cm × 10 cm) for 2 times;

⑤ spreading a towel, spreading a sterile therapeutic towel under the arm, and spreading a sterile hole towel on the arm;

⑥ puncture, namely, a puncture person wears a sterile glove, a probe sleeve is a sterile protective cover, an assistant pricks a tourniquet to coat a sterile coupling agent, the puncture person holds a sterile probe by the left hand to lock the cross section of a target vein, the holding part 212 of an indwelling needle device is held by the thumb and the forefinger of the right hand to ensure that the limiting groove 117 is tightly connected with the limiting boss 116 and ensure that the limiting boss 116 faces upwards, the operator punctures the vein in a pen holding mode along the ultrasonic central line at an angle of 20-30 degrees, after seeing a pinpoint sample bright spot in the vein, the blood return window 213 is checked to see whether blood returns, after seeing the blood returns, the middle finger of the right hand pushes the push rod 113 to send the catheter 112 into the vein by 1-2 cm, the probe is discarded, the indwelling needle is pressed down, and the remaining catheter 112 is sent.

It should be noted that, because of the position-limiting convex ring 116, when the needle tube 210 is retreated, the anti-needle-prick X-shaped elastic sheet 22 will not move along with the needle tube 210, and when the needle point is retreated into the anti-needle-prick X-shaped elastic sheet 22, the front end of the anti-needle-prick X-shaped elastic sheet 22 is closed, and the needle point is enclosed in the elastic sheet. Meanwhile, due to the closing of the anti-needle punch X22, the diameter of the closed anti-needle punch X is smaller than the diameter of the stop collar 116, so that the needle tip and the anti-needle punch X22 can be withdrawn from the catheter hub distal end 1112 together.

⑦ withdraw blood from the branch tube, confirm that the catheter 112 is in the vessel, pulse the tube, seal the tube positively, and pinch the branch tube 114 with the thumb grip 1141.

⑧ sticking film to fix the indwelling needle.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An indwelling needle device is characterized by comprising a catheter component and a needle tube component inserted in the catheter component, wherein the catheter component comprises a catheter seat and a catheter communicated with one end of the catheter seat, the catheter seat is communicated with a branch pipe, a limiting groove is formed in one side, facing the needle tube component, of the catheter seat, the needle tube component comprises a limiting boss part, a holding part and a blood return window arranged at the free tail end of the holding part, the free tail end of the limiting boss part is fixedly communicated with a needle tube, the needle tube extends into the blood return window from the limiting boss part, penetrates through the catheter, and the limiting boss part is clamped in the limiting groove so as to connect the needle tube component with the catheter component.

2. The indwelling needle device of claim 1, wherein the catheter hub includes a proximal hub portion and a distal hub portion connected to each other, the catheter being connected to the proximal hub portion, the branch tube communicating with the proximal hub portion, the distal hub portion being hollow.

3. The indwelling needle device of claim 2, wherein a push rod portion is fixedly provided at the outer periphery of the distal portion of the catheter hub, and a catheter hub engaging piece is fixedly connected to the free end of the distal portion of the catheter hub, the catheter hub engaging piece being annular.

4. The indwelling needle device according to claim 2, wherein a soft plug and a limiting convex ring are further provided in the catheter hub, the limiting convex ring is provided between the soft plug and the limiting groove, the limiting convex ring is provided on the inner wall of the distal end portion of the catheter hub, the limiting convex ring is in a hollow ring shape, and the limiting convex ring is used for clamping a needle-prick-proof X-shaped elastic sheet.

5. The indwelling needle device of claim 1, wherein a thumb grip is provided around the circumference of the branch tube and an infusion connector is provided at the free end of the branch tube.

6. The indwelling needle device according to claim 4, wherein a needle tube tracking portion is provided on the needle tube, the needle tube tracking portion being located on a side close to the free end of the needle tube, the needle tube tracking portion being sheathed with the needlestick-proof X-shaped resilient piece for opening the front end of the needlestick-proof X-shaped resilient piece when the needle tube moves forward relative to the needlestick-proof X-shaped resilient piece; when the needle tube moves backwards relative to the anti-needling X-shaped elastic sheet, the front end of the anti-needling X-shaped elastic sheet is closed.

7. The indwelling needle device according to claim 6, wherein the diameter of the restraining collar is larger than the diameter of the needle-prick preventing X-shaped clip when the front end is closed and smaller than the diameter of the needle-prick preventing X-shaped clip when the front end is open.

8. The indwelling needle device of claim 3, wherein a stop block is fixedly provided on the outer end face of the stop boss portion, and a needle holder engaging piece is provided at the position where the stop boss portion and the grip portion are connected, the needle holder engaging piece being adapted to engage with the catheter holder engaging piece when the assembly is performed.

9. The indwelling needle device according to claim 1, wherein the catheter has a length in the range of 50-70 mm and is made of a polyurethane material.

10. The indwelling needle device of claim 1, wherein the needle tip of the needle cannula is 0.8mm to the catheter.