CN215191619U - Remaining needle convenient for blood sampling - Google Patents
Remaining needle convenient for blood sampling Download PDFInfo
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- CN215191619U CN215191619U CN202121460278.9U CN202121460278U CN215191619U CN 215191619 U CN215191619 U CN 215191619U CN 202121460278 U CN202121460278 U CN 202121460278U CN 215191619 U CN215191619 U CN 215191619U
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Abstract
The utility model discloses an indwelling needle convenient for blood sampling, which comprises an indwelling needle assembly, an extension pipe and a positive pressure joint which are connected in sequence, wherein a sealing pipe clamp is sleeved on the extension pipe, a side pipe communicated with the positive pressure joint is arranged beside the positive pressure joint, the end part of the side pipe can be detachably connected with an end cap, at least one first through hole arranged along the length direction of the side pipe is arranged on the pipe wall of the side pipe, and a first sealing film is arranged on the first through hole; the outer ring of the side tube is provided with vacuum tubes which correspond to the first through holes one by one, the vacuum tubes are provided with second through holes which are coaxial with the first through holes, the second through holes are provided with second sealing films, a needle tube penetrates through the second sealing films and then extends into the vacuum tube, the upper tube wall of the needle tube is provided with a liquid inlet hole, the outer side end of the needle tube is also provided with a sealing terminal, the outer part of the sealing terminal is annularly provided with a fixing ring, and the fixing ring is connected with the fixing terminal and the vacuum tubes in a dot mode. Through above-mentioned structure, medical personnel need not additionally to prepare disposable syringe and carry out the processing of drawing blood, convenient and fast.
Description
Technical Field
The utility model relates to an indwelling needle, in particular to an indwelling needle convenient for blood sampling.
Background
Clinically, the use of the indwelling needle can effectively reduce the number of times of inserting needles of a patient for continuous multi-day infusion, thereby reducing the pain of the patient in infusion and the harm of the patient body caused by multiple times of inserting needles. However, in blood collection, since the remaining blood inside the indwelling needle is not involved in the circulation of the human body because the indwelling needle is a dead space during non-use, there is a difference between each index of the remaining blood in the indwelling needle and the actual index of the blood in the human body, and the blood in the indwelling needle cannot be directly used for blood sample collection. In the conventional method, a blood sample is collected after about 2ml of blood remaining in an indwelling needle is drawn with a disposable syringe. The problem of this kind of mode lies in all needing medical personnel to reuse a disposable syringe to draw when drawing at every turn, wastes time and energy and appears the nipple and keep somewhere the needle when drawing blood easily and be connected the leakproofness inadequately and cause the condition appearance of blood leakage.
SUMMERY OF THE UTILITY MODEL
In view of the above insufficiency, the utility model aims to provide an indwelling needle convenient for blood sampling, which can effectively solve a great deal of inconvenience in blood sampling of indwelling needles.
In order to achieve the above purpose, the technical scheme of the utility model is that:
an indwelling needle convenient for blood sampling comprises an indwelling needle assembly and a positive pressure joint, wherein the indwelling needle assembly is communicated with the positive pressure joint through an extension pipe, a sealing pipe clamp is sleeved on the extension pipe, a side pipe communicated with the positive pressure joint is arranged beside the positive pressure joint, the end part of the side pipe is detachably connected with an end cap, at least one first through hole arranged along the length direction of the side pipe is arranged on the pipe wall of the side pipe, and a first sealing rubber sheet is arranged on the first through hole; the outer ring of the side tube is provided with vacuum tubes which correspond to the first through holes one by one, the vacuum tubes are provided with second through holes which are coaxial with the first through holes, the second through holes are provided with second sealing films, a needle tube penetrates through the second sealing films and then extends into the vacuum tube, the upper tube wall of the needle tube is provided with a liquid inlet hole, the outer side end of the needle tube is also provided with a sealing terminal, the outer part of the sealing terminal is annularly provided with a fixing ring, and the fixing ring is connected with the fixing terminal and the vacuum tubes in a dot mode.
Furthermore, the vacuum tube is made of transparent materials.
Furthermore, a circular groove coaxial with the first through hole is formed in the tube wall of the vacuum tube, the second through hole is formed in the bottom of the circular groove, and the lower portion of the sealing terminal is located in the circular groove when the needle tube does not penetrate through the first sealing film.
Furthermore, the sealing terminal is of a stepped structure, and the diameter of one end, away from the needle tube, of the sealing terminal is larger than that of the circular groove.
Furthermore, a third sealing film is embedded at the end part of the end cap.
The working principle is as follows: when a patient needs to be subjected to indwelling needle blood sampling, medical staff pulls one end of the fixing ring to break a connecting point between the fixing ring and the sealing terminal and between the fixing ring and the vacuum tube, the sealing terminal and the vacuum tube are disconnected immediately, then the medical staff presses the sealing terminal downwards, the needle tube penetrates through the first sealing film under the driving of the sealing terminal, the vacuum tube is communicated with the negative pressure cavity formed by the side tube through the needle tube, and blood in the side tube, the positive pressure joint and the extension tube enters the negative pressure cavity under the action of negative pressure, so that the blood residual in the indwelling needle is extracted. After the blood is extracted, the medical staff can extract the needle tube to perform blood sampling operation through the end part of the side tube or the positive pressure joint.
Has the advantages that: through above-mentioned structure, medical personnel need not additionally to prepare disposable syringe and carry out the processing of drawing blood, convenient and fast.
Drawings
FIG. 1 is a schematic view of the present invention in an unused state;
FIG. 2 is a schematic view of the utility model after use;
FIG. 3 is a cross-sectional view of FIG. 1;
fig. 4 is a cross-sectional view of fig. 2.
Reference numerals: 100. the indwelling needle assembly 110, the catheter holder 120, the catheter 130, the needle 140, the needle holder 200, the extension tube 300, the positive pressure connector 400, the tube sealing clamp 500, the lateral tube 510, the first through hole 600, the first sealing rubber sheet 700, the end cap 800, the vacuum tube 810, the second through hole 820, the circular groove 900, the second sealing rubber sheet 1000, the needle tube 1010, the liquid inlet 1100, the sealing terminal 1200, the fixing ring 1300 and the third sealing rubber sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
An indwelling needle for facilitating blood collection as shown in fig. 1 to 4 includes an indwelling needle assembly 100 and a positive pressure connector 300 communicating with the indwelling needle assembly through an extension tube 200, and a tube sealing clip 400 for sealing the extension tube is fitted over the extension tube. The indwelling needle assembly is a main body part of a conventional indwelling needle, and specifically includes a catheter hub 110 communicating with an extension tube, a catheter 120 provided at a front end of the catheter hub, a needle 130 inserted into the catheter, a needle hub 140 connected to the needle, and the like. In order to facilitate subsequent blood sampling by an indwelling needle, a side tube 500 communicated with the positive pressure joint is arranged beside the positive pressure joint, at least one first through hole 510 arranged along the length direction of the side tube is arranged on the tube wall of the side tube, a first sealing film 600 for sealing the first through hole is arranged on the first through hole, and in addition, an end cap 700 is detachably arranged on the end part of the side tube so as to facilitate subsequent blood sampling. Preferably, the end cap is connected to the side tube by a medical luer fitting to facilitate connection of the side tube to other medical devices. Meanwhile, the vacuum tubes 800 which are in one-to-one correspondence with the first through holes are arranged on the outer portion of the side tube in a surrounding mode, and the vacuum tubes and the side tube are connected in a sealing mode to form a negative pressure cavity with the volume of 2.5-5 ml. Correspondingly, the tube wall of the vacuum tube is provided with second through holes 810 corresponding to the first through holes one by one, and a second sealing film 900 for sealing the second through holes is attached to the second through holes. As shown in fig. 3, in the initial state of the present invention, one end of a needle tube 1000 penetrates through the second sealing film and then extends into the negative pressure cavity formed by the vacuum tube and the side tube. In order to prevent the negative pressure chamber from communicating with the outside, a hermetic terminal 1100 is provided on the outer end of the needle tube, and a fixing ring 1200 is provided around the hermetic terminal and the vacuum tube, and is connected to the hermetic terminal and the vacuum tube by a dot-like bump. As shown in fig. 4, after the medical staff tears off the fixing ring and presses the sealing terminal downward to make the needle tube penetrate the first sealing film, a liquid inlet hole 1010 is further formed in the upper tube wall of the needle tube in order to allow the blood in the indwelling needle to smoothly enter the negative pressure chamber.
As a further improvement of the above embodiment, the vacuum tube is made of a transparent material to facilitate the medical staff to grasp the blood drawing condition in the indwelling needle.
As a further improvement of the above embodiment, in order to prevent the needle tube and the hermetic terminal from being unnecessarily inclined due to external collision, and further prevent the needle tube from passing through the first through hole, a circular groove 820 coaxial with the first through hole is concavely provided on the vacuum tube, and the second through hole is correspondingly provided at the bottom of the circular groove. When the needle tube does not penetrate through the first sealing film, the lower part of the sealing terminal is positioned in the circular groove, so that the excessive inclination of the sealing terminal caused by collision can be avoided.
As a further improvement of the above embodiment, after the blood drawing is completed, the sealing terminal is in a stepped column structure in order to facilitate the medical staff to pull out the needle tube, and the diameter of one end of the sealing terminal far away from the needle tube is larger than that of the circular groove.
As a further improvement of the above embodiment, a piece of third sealing film 1300 is embedded at the end of the end cap for facilitating subsequent blood collection. When blood is needed to be collected, the needle head of the blood collection needle can directly penetrate through the third sealing film and extend into the outlet rod for blood collection.
Claims (5)
1. The utility model provides a keep somewhere needle convenient to blood sampling which characterized in that: the device comprises an indwelling needle assembly and a positive pressure joint, wherein the indwelling needle assembly is communicated with the positive pressure joint through an extension pipe, a sealing pipe clamp is sleeved on the extension pipe, a side pipe communicated with the positive pressure joint is arranged beside the positive pressure joint, the end part of the side pipe is detachably connected with an end cap, at least one first through hole distributed along the length direction of the side pipe is arranged on the pipe wall of the side pipe, and a first sealing rubber sheet is arranged on the first through hole; the outer ring of the side tube is provided with vacuum tubes which correspond to the first through holes one by one, the vacuum tubes are provided with second through holes which are coaxial with the first through holes, the second through holes are provided with second sealing films, a needle tube penetrates through the second sealing films and then extends into the vacuum tube, the upper tube wall of the needle tube is provided with a liquid inlet hole, the outer side end of the needle tube is also provided with a sealing terminal, the outer part of the sealing terminal is annularly provided with a fixing ring, and the fixing ring is connected with the fixing terminal and the vacuum tubes in a dot mode.
2. The indwelling needle for facilitating blood collection according to claim 1, wherein: the vacuum tube is made of transparent materials.
3. The indwelling needle for facilitating blood collection according to claim 1, wherein: the vacuum tube is made of transparent materials.
4. The indwelling needle for facilitating blood collection according to claim 3, wherein: the sealing terminal is of a stepped structure, and the diameter of one end, away from the needle tube, of the sealing terminal is larger than that of the circular groove.
5. The indwelling needle for facilitating blood collection according to claim 1, wherein: and a third sealing rubber sheet is embedded at the end part of the end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121460278.9U CN215191619U (en) | 2021-06-29 | 2021-06-29 | Remaining needle convenient for blood sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121460278.9U CN215191619U (en) | 2021-06-29 | 2021-06-29 | Remaining needle convenient for blood sampling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215191619U true CN215191619U (en) | 2021-12-17 |
Family
ID=79431978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121460278.9U Active CN215191619U (en) | 2021-06-29 | 2021-06-29 | Remaining needle convenient for blood sampling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215191619U (en) |
-
2021
- 2021-06-29 CN CN202121460278.9U patent/CN215191619U/en active Active
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