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CN-122006013-A - Remaining needle heparin lock with backflow preventing function

CN122006013ACN 122006013 ACN122006013 ACN 122006013ACN-122006013-A

Abstract

The invention discloses an indwelling needle heparin lock with a backflow prevention function, and belongs to the technical field of medical puncture tools. The medical infusion device comprises a main pipeline, wherein a branch pipeline is integrally formed on the right side of the main pipeline, a main pipe cap is fixedly connected above the outer side wall of the main pipeline, a branch pipe cap is sleeved above the outer side wall of the branch pipeline, an extension pipe is fixedly connected to the lower surface of the main pipeline, the inside of the extension pipe is communicated with the inside of the main pipeline, the medical duckbill valve is arranged in the main pipeline through an integral forming structure of the main pipeline and the branch pipeline, a stable one-way conduction effect can be realized, liquid can smoothly pass through the main pipeline, the valve port is automatically closed when infusion is stopped or blood backflow tends to exist, the blood backflow is fundamentally blocked, the pollution and the infection risk of the pipeline are effectively reduced, and needleless closed operation can be realized by matching with a silica gel diaphragm I in the main pipe cap.

Inventors

  • CAO YAN
  • YANG SHAOREN
  • CUI MINGHUA
  • ZHAO RUI
  • WEI FENG
  • ZHANG YIQUN

Assignees

  • 十堰市太和医院（湖北医药学院附属医院）

Dates

Publication Date
20260512
Application Date
20260409

Claims (7)

  1. 1. The indwelling needle heparin lock with the backflow prevention function comprises a main pipeline (1) and is characterized in that a branch pipeline (2) is integrally formed on the right side of the main pipeline (1), a main pipe cap (3) is fixedly connected above the outer side wall of the main pipeline (1), a branch pipe cap (4) is sleeved above the outer side wall of the branch pipeline (2), an extension pipe (5) is fixedly connected to the lower surface of the main pipeline (1), and the inside of the extension pipe (5) is communicated with the inside of the main pipeline (1); the medical duckbill valve (6) is fixedly connected to the inside of the main pipeline (1), the first through-type installation circular groove (7) is formed in the upper surface of the inside of the main pipe cap (3), and the first silica gel diaphragm (8) is fixedly connected to the inner side wall of the first installation circular groove (7).
  2. 2. The heparin lock with the backflow preventing function for the indwelling needle is characterized in that a fixed circular plate (9) is arranged on the inner side wall of the branch pipeline (2), a plurality of struts (10) are fixedly connected to the outer side wall of the fixed circular plate (9), the outer side walls of the struts (10) are fixedly connected with the inner side wall of the branch pipeline (2), a sliding rod (11) is fixedly connected to the center of the inner side wall of the branch pipeline cap (4), the bottom end of the sliding rod (11) penetrates through the fixed circular plate (9) and is fixedly connected with a limiting plate (12), a spring (13) is sleeved on the outer side wall of the sliding rod (11), two ends of the spring (13) are fixedly connected with the opposite sides of the fixed circular plate (9) and the limiting plate (12) respectively, and the spring (13) is made of medical grade stainless steel.
  3. 3. The heparin lock with the backflow preventing function for the indwelling needle according to claim 1, wherein a sealing ring (14) is embedded in the inner side wall of the branch pipe cap (4), and the inner side wall of the sealing ring (14) is in contact with the outer side wall of the branch pipe (2).
  4. 4. The heparin lock with the backflow preventing function for the indwelling needle according to claim 1, wherein a through type installation round groove II (15) is formed in the upper surface of the inner portion of the branch pipe cap (4), and a silica gel diaphragm II (16) is fixedly connected to the inner side wall of the installation round groove II (15).
  5. 5. The heparin lock with the backflow preventing function for the indwelling needle according to claim 1, wherein a jacket (17) is sleeved on the outer side wall of the extension tube (5), an arc-shaped retaining plate (18) is arranged in the jacket (17), an adjusting screw (19) is rotatably connected to the left side of the arc-shaped retaining plate (18) through a rotating shaft, the left end of the adjusting screw (19) extends to the left side of the jacket (17), a knob I (20) is fixedly connected to the left end of the adjusting screw, the outer side wall of the adjusting screw (19) is in threaded connection with the inner side of the jacket (17), a limiting strip (21) is fixedly connected to the upper surface of the arc-shaped retaining plate (18), and the lower surface of the limiting strip (21) is in sliding connection with the upper surface of the jacket (17).
  6. 6. The heparin lock with the backflow preventing function for the indwelling needle according to claim 1, wherein the locking hole (22) is formed in the outer side wall of the branch pipe (2) and located below the branch pipe cap (4), a connecting plate (23) is fixedly connected to the lower surface of the branch pipe cap (4), a knob II (24) is arranged on the right side of the connecting plate (23), a locking screw (25) is fixedly connected to the left end of the knob II (24), and the left end of the locking screw (25) is in threaded connection with the inner side wall of the locking hole (22).
  7. 7. The heparin lock with the backflow preventing function for the indwelling needle according to claim 2, wherein a plurality of semicircular limiting vertical grooves (26) are formed in the inner side of the fixed circular plate (9), a plurality of semicircular vertical bars (27) are fixedly connected to the outer side wall of the sliding rod (11), and the outer side walls of the semicircular vertical bars (27) are respectively connected with the inner side walls of the semicircular limiting vertical grooves (26) in a sliding mode.

Description

Remaining needle heparin lock with backflow preventing function Technical Field The invention relates to the technical field of medical puncture tools, in particular to an indwelling needle heparin lock with a backflow prevention function. Background The heparin lock of the indwelling needle is used as a medical auxiliary instrument commonly used in clinic and is mainly used for sealing the tail end of a catheter in the intermittent period of infusion of the indwelling needle, sealing a pipeline, preventing blood from flowing out and air from entering, facilitating the subsequent infusion, flushing and sealing operation, being widely applied to various clinical treatment scenes, and in order to meet the basic requirements of clinical infusion, the heparin lock of the indwelling needle is generally provided with a main pipeline and a branch pipeline, wherein the main pipeline is used as a main channel of infusion of liquid medicine, flushing and sealing the catheter, and the branch pipeline is mainly used for exhausting operation before infusion so as to avoid bad results caused by air bubbles entering a blood vessel of a patient in the infusion process; However, when the existing indwelling needle heparin lock is used for carrying out exhaust operation by utilizing the branch pipeline, the sealing cap arranged on the outer side of the pipeline of the branch pipeline is required to be completely opened, pipeline conduction can be achieved, and exhaust is completed, because the sealing cap is completely opened, the branch pipeline is directly communicated with the outside, the tail end of the indwelling needle catheter is in a conduction state with a blood vessel of a patient, at the moment, blood in the blood vessel easily flows out to the outside through the main pipeline and the branch pipeline under the action of self pressure, so that the blood loss of the patient can be caused, discomfort of the patient is increased, pipeline pollution is possibly caused, and the risk of relevant blood flow infection of the catheter is further increased. Disclosure of Invention Object of the invention it is an object of the present invention to provide a solution to the problems described in the background art. The technical scheme is that the indwelling needle heparin lock with the backflow preventing function comprises a main pipeline, wherein a branch pipeline is integrally formed on the right side of the main pipeline, a main pipe cap is fixedly connected above the outer side wall of the main pipeline, a branch pipe cap is sleeved above the outer side wall of the branch pipeline, an extension pipe is fixedly connected to the lower surface of the main pipeline, and the inside of the extension pipe is communicated with the inside of the main pipeline; The medical duckbill valve is fixedly connected to the inside of the main pipeline, a through type installation circular groove I is formed in the upper surface of the inside of the main pipe cap, and a silica gel diaphragm I is fixedly connected to the inner side wall of the installation circular groove I. Still further, the inside wall of branch pipeline is provided with fixed plectane, the lateral wall fixedly connected with of fixed plectane a plurality of branches, a plurality of the lateral wall of branch all with the inside wall fixed connection of branch pipeline, the inside wall center department fixedly connected with slide bar of branch pipe cap, the bottom of slide bar passes fixed plectane, and fixedly connected with limiting plate, the lateral wall cover of slide bar is equipped with the spring, the both ends of spring respectively with fixed plectane with the opposite side fixed connection of limiting plate, the material of spring is medical grade stainless steel material. Furthermore, the inner side wall of the branch pipe cap is provided with a sealing ring in an embedded mode, and the inner side wall of the sealing ring is in contact with the outer side wall of the branch pipe. Furthermore, a through type installation round groove II is formed in the upper surface of the inner portion of the support pipe cap, and a silica gel diaphragm II is fixedly connected to the inner side wall of the installation round groove II. Still further, the lateral wall cover of extension pipe is equipped with the clamp sleeve, the inside of clamp sleeve is provided with the arc and keeps out the board, the left side that the arc kept out the board is rotated through the pivot and is connected with adjusting screw, adjusting screw's left end extends to the left side of clamp sleeve, and fixedly connected with knob one, adjusting screw's lateral wall with the inside threaded connection of clamp sleeve, the upper surface fixedly connected with spacing of arc keeps out the board, the lower surface of spacing with the upper surface sliding connection of clamp sleeve. Furthermore, the lateral wall of branch pipeline just is located the below of branch pipe cap has seted up the l