CN222426025U - Needle tube retraction type venous blood sampling remaining needle - Google Patents
Needle tube retraction type venous blood sampling remaining needle Download PDFInfo
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- CN222426025U CN222426025U CN202420885692.1U CN202420885692U CN222426025U CN 222426025 U CN222426025 U CN 222426025U CN 202420885692 U CN202420885692 U CN 202420885692U CN 222426025 U CN222426025 U CN 222426025U
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Abstract
本实用新型涉及医疗器械技术领域，具体是一种针管回缩式静脉采血留置针，包括导向筒、导管座和导管，所述导向筒与导管座一端连通，所述导管座另一端与导管连通，其特征在于，还包括滑套和穿刺钢针，所述穿刺钢针与滑套连接，所述滑套与导向筒套接，所述穿刺钢针在导向筒、导管座和导管内滑动；所述导向筒上开设有导向孔，所述滑套可沿着导向孔滑动；所述导向筒一端开设有卡槽，所述滑套内侧设有与卡槽配合的弹片；所述导管座上设有无菌敷贴。本实用新型在采血结束后，穿刺钢针回缩，避免针头裸露在外，避免针刺伤发生；导管上设置的无菌敷贴用于贴到病人皮肤上，方便采血时固定，防止针头移位和脱出，同时防止穿破患者血管和针刺伤；穿刺钢针针头端稍粗设计，便于采血时候引流，避免因采血引起假性溶血、血钾高的问题；采血结束后，可以进行静脉输液治疗。
The utility model relates to the technical field of medical devices, and specifically is a needle tube retractable venous blood sampling indwelling needle, comprising a guide tube, a catheter seat and a catheter, wherein the guide tube is connected with one end of the catheter seat, and the other end of the catheter seat is connected with the catheter, and is characterized in that it also comprises a sliding sleeve and a puncture steel needle, wherein the puncture steel needle is connected with the sliding sleeve, and the sliding sleeve is sleeved with the guide tube, and the puncture steel needle slides in the guide tube, the catheter seat and the catheter; a guide hole is provided on the guide tube, and the sliding sleeve can slide along the guide hole; a card slot is provided at one end of the guide tube, and a spring sheet cooperating with the card slot is provided on the inner side of the sliding sleeve; and a sterile dressing is provided on the catheter seat. After blood collection is completed, the puncture needle of the utility model retracts to avoid the needle being exposed and needle stick injuries. The sterile dressing arranged on the catheter is used to be attached to the patient's skin, which is convenient for fixing during blood collection and prevents the needle from shifting and coming out, and at the same time prevents puncturing the patient's blood vessels and needle stick injuries. The puncture needle tip is designed to be slightly thicker, which is convenient for drainage during blood collection and avoids the problems of false hemolysis and high blood potassium caused by blood collection. After blood collection is completed, intravenous infusion treatment can be performed.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a needle tube retraction type venous blood sampling indwelling needle.
Background
The venous blood sampling technology has wide application in clinical medicine, and various components in human blood can be obtained through the venous blood sampling technology, so that doctors can judge the illness state of patients and formulate schemes and the like. At present, most of the hospital uses a split (catheter) venous blood taking needle which consists of a protective cap, a puncture needle, a needle seat (also called a single-blade handle), a catheter, a connecting seat, a blood collecting needle and a blood blocking sleeve.
At present, the puncture steel needle is directly exposed after the needle is pulled out when the blood sampling is finished, so that the risk of the needle to hurt other people is greatly increased, and the risk of the infection and transmission of blood-borne diseases is also increased.
Clinically, two operations of intravenous blood sampling and intravenous transfusion are often required to be carried out together, and the blood sampling needle and the indwelling needle are used for separate operation, so that the vein of the patient needs to be punctured twice, and the pain of the patient is increased. Blood collection by the indwelling needle also often has the problems of hemolysis, high false blood potassium and the like caused by too thin blood collection needle head of the indwelling needle.
Disclosure of utility model
The utility model aims to solve the technical problem of providing a needle tube retraction type venous blood sampling indwelling needle which can effectively solve the problem in the background art.
In order to solve the problems, the technical scheme adopted by the utility model is that the needle tube retraction type venous blood collection indwelling needle comprises a guide cylinder, a guide tube seat and a guide tube, wherein the guide cylinder is communicated with one end of the guide tube seat, and the other end of the guide tube seat is communicated with the guide tube; the guide tube is provided with a guide hole, the sliding sleeve can slide along the guide hole, one end of the guide tube is provided with a clamping groove, the inner side of the sliding sleeve is provided with a spring sheet matched with the clamping groove, and the guide tube seat is provided with a sterile application.
Preferably, one side of the catheter seat is connected with an extension tube, one end of the extension tube is sequentially connected with a transparent connecting seat and a needle seat, one end of the needle seat is connected with a blood taking needle, a rubber sleeve and a protective cover, the needle seat is detachably connected with the transparent connecting seat, the rubber sleeve is arranged on the periphery of the blood taking needle, and the protective cover is sleeved on the periphery of the blood taking needle.
Preferably, the length of the protective cover is 5-7cm, the length of the protective cover is at least 1cm longer than that of the blood taking needle, the diameter of the protective cover is larger than 2cm, and the protective cover is made of transparent materials.
Preferably, the extension tube is provided with a tube sealing clamp.
Preferably, butterfly wings are arranged on the sliding sleeve.
Preferably, the catheter has a nominal outer diameter of 0.8mm.
Compared with the prior art, the utility model provides a needle tube retraction type venous blood sampling indwelling needle, which has the following beneficial effects:
after blood collection, the puncture steel needle is retracted, so that the needle head is prevented from being exposed, and the needle puncture is prevented from occurring;
The aseptic application arranged on the catheter seat is used for being stuck on the skin of a patient, is convenient for fixing when blood is taken, prevents the needle from shifting and falling out, and simultaneously prevents the blood vessel of the patient from being punctured and the needle from being punctured;
The needle head end of the puncture steel needle is slightly thick, so that drainage is facilitated during blood sampling, and the problem of high blood potassium and false hemolysis caused by blood sampling is avoided;
According to the specific condition of the patient, the transparent connecting seat can be used for venous blood sampling or venous fluid infusion of the patient, so that the pain of the patient is prevented from being increased by secondary puncture.
Drawings
FIG. 1 is a schematic view of a part of the structure of the present utility model;
FIG. 2 is a schematic diagram of the structure of the present utility model;
FIG. 3 is a schematic view showing a part of the structure of the present utility model in a disassembled state;
fig. 4 is a cross-sectional view of a portion of the structure of the present utility model.
Wherein: 1, a guide cylinder, 11, a guide hole, 12, a clamping groove, 21, a guide tube seat, 22, a guide tube, 3, a sliding sleeve, 31, a butterfly wing, 4, a puncture steel needle, 5, a sterile application, 61, an extension tube, 62, a transparent connecting seat, 63, a needle seat, 64, a rubber sleeve, 7, a blood taking needle, 8, a protective cover, 9 and a tube sealing clamp.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-4, the utility model provides a needle tube retraction type venous blood collection indwelling needle, which comprises a guide cylinder 1, a guide tube seat 21 and a guide tube 22, wherein the guide cylinder 1 is communicated with one end of the guide tube seat 21, the other end of the guide tube seat 21 is communicated with the guide tube 22, and the needle tube retraction type venous blood collection indwelling needle is characterized by further comprising a sliding sleeve 3 and a puncture steel needle 4, the puncture steel needle 4 is connected with the sliding sleeve 3, the sliding sleeve 3 is sleeved with the guide cylinder 1, the puncture steel needle 4 slides in the guide cylinder 1, the guide tube seat 21 and the guide tube 22, a guide hole 11 is formed in the guide cylinder 1, the sliding sleeve 3 can slide along the guide hole 11, a clamping groove 12 is formed in one end of the guide cylinder 1, an elastic sheet matched with the clamping groove 12 is arranged on the inner side of the sliding sleeve 3, and a sterile patch 5 is arranged on the guide tube seat 21.
The aseptic application 5 is arranged on one side of the catheter seat 21, the aseptic application 5 is folded, when the dressing substrate below the aseptic application 5 is torn off to expose the adhesive surface of the aseptic application 5, the aseptic application 5 can be unfolded, the blood taking needle is fixed on the skin of a patient, the needle head is prevented from being shifted and pulled out, meanwhile, the blood vessel and the needle puncture of the patient are prevented from being punctured, the nominal outer diameter of the catheter 22 is 0.8mm, and the problems of false hemolysis, high blood potassium level and the like caused by blood taking are avoided.
Preferably, one side of the catheter seat 21 is connected with an extension tube 61, one end of the extension tube 61 is sequentially connected with a transparent connecting seat 62 and a needle seat 63, one end of the needle seat 63 is connected with a blood taking needle 7, a rubber sleeve 64 and a protective cover 8, the needle seat 63 and the transparent connecting seat 62 are detachably connected, the rubber sleeve 64 is arranged on the periphery of the blood taking needle 7, and the protective cover 8 is sleeved on the periphery of the blood taking needle 7.
The blood taking needle 7 is connected with the needle seat 63, the rubber sleeve 64 and the protective cover 8 into a whole, the needle seat 63 can be separated from the transparent connecting seat 62 after blood taking, the needle seat 63, the rubber sleeve 64 and the protective cover 8 are separated and discarded together, and the interface end of the transparent connecting seat 62 can be directly connected with a positive pressure connector or an intravenous infusion set after separation.
Preferably, the length of the protective cover 8 is 6cm, the length of the protective cover 8 is at least 1cm longer than the length of the blood taking needle 7, the diameter of the protective cover 8 is larger than 2cm, and the protective cover 8 is made of transparent materials.
Preferably, the extension tube 61 is provided with a sealing tube clip 9.
Preferably, the sliding sleeve 3 is provided with butterfly wings 31.
Preferably, the catheter 22 has a nominal outer diameter of 0.8mm.
As a specific embodiment of the present utility model:
The blood taking needle 7 is connected with the puncture steel needle 4 into a whole through the needle seat 63, the transparent connecting seat 62, the extension tube 61, the catheter seat 21 and the guide cylinder 1, the puncture steel needle 4 is used for puncturing vein of a patient, the blood taking needle 7 is used for connecting the blood taking tube, when the blood taking needle is used, the puncture steel needle 4 is used for puncturing, after the blood is punctured, the sliding sleeve 3 slides towards the rear end of the catheter 22, the sliding sleeve 3 drives the puncture steel needle 4 to retract into the catheter 22, the catheter seat 21 or the guide cylinder 1, if the blood vessel is not punctured for the first time, the sliding sleeve 3 can be pushed again to send out of the catheter 22 for puncturing again, when the blood vessel is successfully punctured, the sliding sleeve 3 slides to the tail end of the guide cylinder 1, when the elastic sheet on the inner side of the sliding sleeve 3 is clamped on the clamping groove 12 of the guide cylinder 1, the click sound can be heard, at the moment, the sliding sleeve 3 and the puncture steel needle 4 can not slide back and forth, at the moment, the puncture steel needle 4 is completely retracted into the guide cylinder 1, when the indwelling needle is discarded, the puncture steel needle 4 is not damaged outside, and the risk of blood-borne infection and spread is reduced.
Referring to 2, from the viewpoints of hospital feel and expense, the application is changed from the original double cavities into single cavities, namely, after improvement, the single cavities are only connected with one joint, and maintenance only needs to wash one cavity.
The foregoing embodiments are merely for illustrating the technical solution of the present utility model, but not for limiting the same, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that modifications may be made to the technical solution described in the foregoing embodiments or equivalents may be substituted for parts of the technical features thereof, and such modifications or substitutions do not depart from the spirit and scope of the technical solution of the embodiments of the present utility model.
Claims (6)
1. The needle tube retraction type intravenous blood sampling indwelling needle comprises a guide cylinder (1), a guide tube seat (21) and a guide tube (22), wherein the guide cylinder (1) is communicated with one end of the guide tube seat (21), the other end of the guide tube seat (21) is communicated with the guide tube (22), the needle tube retraction type intravenous blood sampling indwelling needle is characterized by further comprising a sliding sleeve (3) and a puncture steel needle (4), the puncture steel needle (4) is connected with the sliding sleeve (3), the sliding sleeve (3) is sleeved with the guide cylinder (1), the puncture steel needle (4) slides in the guide cylinder (1), the guide tube seat (21) and the guide tube (22), a guide hole (11) is formed in the guide cylinder (1), the sliding sleeve (3) can slide along the guide hole (11), a clamping groove (12) is formed in one end of the guide cylinder (1), an elastic sheet matched with the clamping groove (12) is arranged on the inner side of the sliding sleeve (3), and a sterile application piece (5) is arranged on the guide tube seat (21).
2. The needle tube retraction type intravenous blood sampling indwelling needle according to claim 1, wherein one side of the catheter seat (21) is connected with an extension tube (61), one end of the extension tube (61) is sequentially connected with a transparent connecting seat (62) and a needle seat (63), one end of the needle seat (63) is connected with a blood taking needle (7), a rubber sleeve (64) and a protective cover (8), the needle seat (63) is detachably connected with the transparent connecting seat (62), the rubber sleeve (64) is arranged on the periphery of the blood taking needle (7), and the protective cover (8) is sleeved on the periphery of the blood taking needle (7).
3. The needle tube retraction type venous blood collection indwelling needle according to claim 2, wherein the length of the protecting cover (8) is 5-7cm, the length of the protecting cover (8) is at least 1cm longer than that of the blood collection needle (7), the diameter of the protecting cover (8) is larger than 2cm, and the protecting cover (8) is made of transparent materials.
4. A retracting needle cannula intravenous blood collection needle as claimed in claim 2, wherein the extension tube (61) is provided with a tube sealing clip (9).
5. A needle tube retraction type venous blood collection indwelling needle according to claim 1, wherein butterfly wings (31) are arranged on the sliding sleeve (3).
6. A retracting needle cannula intravenous blood collection needle as claimed in claim 1, wherein the catheter (22) has a nominal outer diameter of 0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420885692.1U CN222426025U (en) | 2024-04-26 | 2024-04-26 | Needle tube retraction type venous blood sampling remaining needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420885692.1U CN222426025U (en) | 2024-04-26 | 2024-04-26 | Needle tube retraction type venous blood sampling remaining needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222426025U true CN222426025U (en) | 2025-02-07 |
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ID=94399311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420885692.1U Active CN222426025U (en) | 2024-04-26 | 2024-04-26 | Needle tube retraction type venous blood sampling remaining needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222426025U (en) |
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2024
- 2024-04-26 CN CN202420885692.1U patent/CN222426025U/en active Active
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