WO2016086833A1

WO2016086833A1 - Indwelling needle sustained release positive pressure apparatus

Info

Publication number: WO2016086833A1
Application number: PCT/CN2015/096111
Authority: WO
Inventors: 邹卫平
Original assignee: 邹卫平
Priority date: 2014-12-01
Filing date: 2015-12-01
Publication date: 2016-06-09
Also published as: CN104436363A; CN104436363B

Abstract

An indwelling needle sustained release positive pressure apparatus comprising a protective cap (12), a threaded connector (1), a front catheter (2), a front three-way tee (3), a sustained release catheter (5), an intermediate catheter (4), a clamp (6), a rear three-way tee (7), a rear catheter (8), a three-way tee base (9), a positive pressure connector (11), and a solution reservoir (10). The clamp (6) is sleeved onto the intermediate catheter (4). The sustained release catheter (5) and the intermediate catheter (4) are connected at either extremity respectively to the two-hole extremity of the front three-way tee (3) and that of the rear three-way tee (7). The other components are connected with each other. The indwelling needle sustained release positive pressure apparatus is provided with two catheters, one of which is the sustained release catheter (5) provided at the middle thereof with a micropore, while the other is the intermediate catheter (4) having a universal aperture. When the intermediate catheter (4) is clamped shut by the clamp (6), hydraulic pressure released by the positive pressure connector (11) and the solution reservoir (10) forms a pressure, a medicinal solution slowly flows out from the micropore of the sustained release catheter (5) into an indwelling needle catheter component (13 and 15) and then permeates into a blood vessel, thus effectively preventing thrombus formation. In addition, when infusion is required on the next day, normal infusion can be allowed simply by disinfecting a connecting part before connecting and by opening the clamp on the intermediate catheter.

Description

Indwelling needle slow release positive pressure device

Technical field

The present invention relates to a disposable medical device, and more particularly to an indwelling needle sustained release positive pressure device.

Background technique

The single-use intravenous indwelling needle used clinically in the clinical units of various medical institutions in China needs to be sealed after the infusion to avoid tube plugging due to the formation of blood clotting in the tube, but in practice, it is often caused by patient movement and blood. The infiltration causes the blood to enter the tube, and if the blood is not flushed before the infusion of the next day, or the formed clot is flushed into the blood vessel, the blood vessel which is blocked by the blood during the circulation is formed into an embolism. The patient brings great harm and even life-threatening. Although anticoagulant drugs such as heparin sodium are injected into the patient to prevent blood coagulation, there may be patients who are allergic to anticoagulant drugs such as heparin sodium, and may also be sealed with physiological saline, but they are sealed. The tube time is limited, and it needs to be sealed several times. In addition, the improper operation of the nurse can easily cause the tube blocking phenomenon. On the market, there is a positive pressure joint device, and the technology of placing fine fiber drainage in the tube, which can only be There is a positive pressure, or because the clip is too tight, the pressure is too small, the liquid is released, but the liquid will not flow out in a few minutes, or easy Plugging into, how can we solve the problem of blood clotting to prevent blood clots generated in the tube is facing solved.

Summary of the invention

The object of the present invention is to provide an indwelling needle sustained release positive pressure device, which can provide a certain volume of liquid medicine, a continuous pressure source, and at the same time, can stably release the drug solution, prevent clot formation in the indwelling tube, and avoid blocking. Tube phenomenon occurs, prolonging the service life of the indwelling needle, thereby avoiding secondary damage caused by the formed blood clot rushing into the patient's blood circulation system.

In order to achieve the above object, the present invention adopts the following technical solutions: the present invention includes a protective cap, a screw joint, a front duct, a front tee, a slow release duct, a middle duct, a clip, a rear tee, a rear duct, a tee seat, and a positive pressure The joint and the liquid reservoir are sleeved on the middle conduit, and the two ends of the slow release conduit and the middle conduit are respectively connected with the double hole ends of the front three passages and the rear three passages, and the front conduits are respectively connected with the single tees and the spiral joints of the front three passages. The small end end is connected, the large end of the screw joint is screwed to the protective cap, and the rear duct is respectively connected with the single hole end of the rear tee and the front part of the tee seat, and the positive pressure joint and the liquid reservoir are respectively screwed to the rear of the tee seat The two ends are characterized in that: the indwelling needle sustained release positive pressure device has a double catheter, one of the catheters is a micro-transportation slow-release catheter in the middle, and the other catheter is a middle catheter of the infusion, wherein the catheter is clipped by the clip After that, the positive pressure joint and the hydraulic pressure released by the reservoir form a pressure, and the liquid medicine slowly flows out from the micropores of the sustained release conduit.

The liquid reservoir of the indwelling needle sustained release positive pressure device is a spring-loaded syringe in the rear inner cavity thereof. After the syringe is sucked, the spring is compressed to release the plunger of the syringe, and the spring releases the pressure to form a positive pressure on the indwelling needle. Device.

The front end of the screw joint of the indwelling needle sustained release positive pressure device can be screwed to the catheter hub of the catheter assembly of the straight or butterfly indwelling needle.

The indwelling needle sustained release positive pressure device may also be a catheter end of the catheter assembly of the front portion of the front catheter and the Y-shaped indwelling needle. Pick up.

The sustained release catheter of the indwelling needle sustained release positive pressure device may be made of one material or more with one or more micropores as a medical liquid passage, and the micropore diameter is between 0.001 mm and 0.1 mm, or may be different The pore diameter is formed by segmental connection, and it may also be a solid core tube in which two materials are co-extruded into a package, and a gap formed between the contact surfaces of the two materials is used as a chemical liquid passage.

The positive pressure joint and the liquid reservoir which are screwed together at the rear of the three-way seat of the indwelling needle positive pressure positive pressure device can be replaced, and the positive pressure joint can also be replaced by a heparin cap.

The syringe casing of the indwelling needle sustained release positive pressure device is screwed to the rear of the tee seat, and can also be designed as a unitary structure.

The spring in the syringe of the indwelling needle sustained release positive pressure device can also be replaced by an elastic reservoir or a reservoir or an elastomer.

The clip of the indwelling needle sustained release positive pressure device may be a one-handed clip or a clip.

The indwelling needle sustained release positive pressure device can also be screwed onto the central venous catheter connector seat for the same sustained release effect as the indwelling needle.

In the indwelling needle sustained release positive pressure device of the present invention, when the catheter assembly is not provided, the infusion set end joint is screwed to the positive pressure joint of the present invention, so that the infusion set and the indwelling needle sustained release positive pressure device of the present invention are filled with the liquid medicine After that, remove the cap on the screw joint, screw the screw joint to the straight indwelling needle catheter hub with the needle assembly removed, and pull the core rod to pump the liquid to the syringe casing when the physiological saline is delivered. The position of the core rod slot, after the angle of the rotating core rod makes the four ribs of the core rod deviate from the slot of the cover, the spring is compressed, and the core rod is stuck on the cover; when the infusion is nearing the end, the water stop clip is closed, and the infusion is performed. The end joint is separated from the positive pressure joint, and a positive pressure is formed in the positive pressure joint. After that, the four ribs of the core rod are restored to the slit of the cover, the compression spring is released, and the liquid medicine in the outer cylinder of the syringe is squeezed. Pressing to form another positive pressure, so that the present invention simultaneously has two positive pressures simultaneously pressing the liquid medicine, and the squeezed liquid medicine in the tube of the present invention flows along the micropores of the slow release conduit to the indwelling catheter, and flows. Until the indwelling catheter is also formed larger than the human vein Infiltration into the vein, because the invention has always kept the drug solution infiltrated into the patient's venous blood vessel, thereby preventing the blood from coagulating in the indwelling catheter, thereby preventing the tube from forming a thrombus and preventing the blood clot from entering the blood vessel to form a secondary injury, thereby eliminating the nurse. Every 6-8 hours/time of sealing and flushing, the workload is reduced. In addition, when the infusion is needed again the next day, it is only necessary to sterilize the connection and connect, and open the clip on the middle catheter. It can be infused normally. If it needs to be placed again, it will be pumped into the reservoir when infusion of physiological saline for sealing.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention;

2 and 3 are schematic views showing the structure intention and the cover of the liquid receiver of the present invention;

4 is a schematic structural view of a first embodiment of the present invention in combination with a straight indwelling needle catheter assembly;

FIG. 5 is a schematic structural view of Embodiment 2 of the present invention.

Reference mark:

1-spiral joint, 2-anterior catheter, 3-front tee, 4-middle catheter, 5-release catheter, 6-clip, 7-rear tee, 8-post catheter, 9-way tee, 10- Reservoir, 11-positive pressure fitting, 12-cap, 13-straight indwelling needle catheter assembly, 14-heparin cap, 15-Y indwelling catheter assembly, 16-Y indwelling needle assembly, 101 - Syringe jacket, 102-piston, 103-core, 104-spring, 105-cover.

detailed description

The present invention will be further described in detail below with reference to the embodiments and with reference to the accompanying drawings.

Example 1

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the present invention consists of a cap (12), a screw joint (1), a front duct (2), a front tee (3), and a sustained release catheter (5). ), middle conduit (4), clamp (6), rear tee (7), rear conduit (8), tee (9), positive pressure joint (11) and reservoir (10), clip ( 6) On the middle conduit (4), the two ends of the slow-release conduit (5) and the middle conduit (4) are respectively connected with the double-hole ends of the front three-way (3) and the rear three-way (7), and the front conduit ( 2) Connected to the small-end end of the single-hole and screw joint (1) of the front three-way (3), the screw-type joint (1), the large-end screw-on cap (12), and the rear duct (8) and the rear tee ( 7) The single hole end is connected to the front portion of the tee seat (9), and the positive pressure joint (11) and the liquid reservoir (10) are respectively screwed to the two ends of the rear portion of the three-way seat (9), which is characterized in that The indwelling needle sustained release positive pressure device has a double catheter, one of which is a slow release catheter (5) with a microporous hole in the middle, and the other catheter is a middle catheter (4) for infusion, wherein the catheter (4) is After the clip (6) is clamped, the hydraulic pressure released by the positive pressure joint (11) and the reservoir (10) forms a pressure, and the chemical liquid slowly flows out from the micropores of the sustained release conduit (5).

The reservoir (10) of the indwelling needle sustained release positive pressure device is a syringe with a spring (104) in its rear inner cavity, and the spring (104) is compressed after the syringe is sucked to release the plunger of the syringe (103) The spring (104) releases the pressure so that the indwelling needle forms a positive pressure device.

The front portion of the screw joint (1) of the indwelling needle sustained release positive pressure device can be screwed to the catheter hub of the catheter assembly (13) of the straight or butterfly indwelling needle.

The indwelling needle sustained release positive pressure device may also be connected to the catheter end of the catheter assembly (15) of the Y-type indwelling needle at the front of the front catheter (2).

The sustained release conduit (5) of the indwelling needle sustained release positive pressure device may be made of one material or more with one or more micropores as a medical liquid passage, and the micropore diameter is between 0.001 mm and 0.1 mm. It may be formed by segmental connection of different pore diameters, or it may be a solid core catheter in which two materials are co-extruded into a package, and a gap formed between the contact surfaces of the two materials is used as a chemical liquid passage.

The positive pressure joint (11) and the liquid reservoir (10) which are screwed together at the rear of the three-way seat (9) of the indwelling needle positive pressure positive pressure device, the exchangeable position, the positive pressure joint (11) It can be replaced with a heparin cap (14).

The syringe casing (101) of the indwelling needle sustained release positive pressure device is screwed to the rear interface of the tee seat (9), and can also be designed As a unitary structure.

The spring (104) in the syringe of the indwelling needle sustained release positive pressure device may also be an elastic reservoir or a reservoir or an elastomer.

The clip (6) of the indwelling needle sustained release positive pressure device may be a one-handed clip or a clip.

In the indwelling needle sustained release positive pressure device of the first embodiment of the present invention, the infusion set end joint is screwed to the positive pressure joint (11) of the present invention, and the infusion set and the indwelling needle sustained release positive pressure device of the present invention are provided. After filling with the liquid, remove the cap (12) on the screw joint (1) and screw the screw joint (1) onto the catheter seat of the straight indwelling needle catheter assembly (13) with the needle assembly removed. When the physiological saline is transferred, the drawing core rod (103) sucks the liquid medicine into the syringe casing (101), to the position of the core rod (103), and rotates the core rod (103) at an angle to make the four core rods (103) After the ribs are offset from the slot of the cover (105), the spring (104) is compressed, and the core rod (103) is caught on the cover (105); when the infusion is nearing the end, the water stop clip (6) is closed, and the infusion set is turned on. The end joint is separated from the positive pressure joint (11), and a positive pressure is formed in the positive pressure joint (11), and then the four bars of the core rod (103) are restored to the slit of the cover (105), and the compressed spring (104) Is released, the liquid medicine in the outer cylinder (101) of the syringe is squeezed by the rubber plug (102) to form another positive pressure, so that the present invention simultaneously has two positive pressures simultaneously pressing the liquid medicine, the present invention Inside the tube The squeezed liquid flows along the micropores of the sustained-release catheter (5) to the indwelling catheter, and flows to the indwelling catheter and also forms a venous pressure larger than the human body to infiltrate the vein. Since the present invention keeps the drug solution infiltrating into the patient's vein Intravascular, which can prevent blood from coagulation and coagulation in the indwelling catheter, thereby preventing the tube from being blocked and preventing the formation of blood clots, preventing the blood clot from entering the blood vessel to form a secondary injury, thus eliminating the need for the nurse to seal the tube every 6-8 hours/time. Tube, to reduce the workload, in addition, when the infusion is needed again the next day, only the connection site is disinfected and connected, and the clip on the middle catheter is opened, and the infusion can be normally performed. If it needs to be indwelled again, then Pumped into the reservoir while infusion of saline for use in sealing the tube.

Example 2

As shown in FIG. 5, the second embodiment of the present invention differs from the first embodiment in the needle assembly (16) of the Y-type indwelling needle, the catheter assembly (15) of the Y-type indwelling needle, the front catheter (2), and the front three links. (3), sustained release catheter (5), middle catheter (4), clip (6), rear tee (7), posterior catheter (8), tee (9), heparin cap (14) and stock solution The device (10) is composed of a clip (6) sleeved on the middle conduit (4), and the two ends of the slow release conduit (5) and the middle conduit (4) are respectively connected with the double-hole ends of the front and rear tees, and the front duct ( 2) respectively connected to the branch end of the duct assembly (15) of the single-hole and Y-type indwelling needle of the first three-way (3), and the single-end end and the three-way seat of the rear duct (8) and the rear tee (7), respectively ( 9) The front connection, the heparin cap (14) and the reservoir (10) are respectively screwed to the two ends of the rear of the tee seat (9), and the other features are the same, but the operation is also different.

In the second embodiment, the infusion set of the infusion set is inserted into the latex cap of the heparin cap (14) of the second embodiment, so that the infusion set and the indwelling needle with the Y-shaped indwelling needle of the second embodiment are slowed down. After the positive pressure device is filled with the liquid medicine, the indwelling needle sheath is removed, the infusion set adjuster is closed, and the wound disinfection is performed according to the indwelling needle puncture operation procedure, and the venous puncture is seen after returning blood. The infusion set is performed after the needle assembly (16), the needle insertion, the needle assembly (16), the fixation, and the like. When the physiological saline is delivered, the core rod (103) is pulled to suck the liquid into the syringe casing (101). To the position of the core rod (103) slot, the angle of the rotating core rod (103) is such that the four ribs of the core rod (103) are offset from the slot of the cover (105), the spring (104) is compressed, and the core rod (103) is Jam on the cover (105); when the infusion is nearing the end, close the water stop clip (6), pull out the infusion needle, and then restore the four bars of the core rod (103) to the slot of the cover (105). The compressed spring (104) is released, and the liquid medicine in the outer cylinder (101) of the syringe is squeezed by the rubber plug (102) to form a positive pressure pressing liquid, so that the squeezed liquid in the tube is along The micropores of the sustained-release catheter (5) flow to the indwelling catheter, and flow to the indwelling catheter also forms a venous pressure greater than the human body to infiltrate the vein. Since the present invention keeps the liquid medicine infiltrating into the vein of the patient, the blood can be prevented from being The indwelling catheter condenses into a solidification, which can prevent the tube from being blocked and prevent the blood clot from entering the blood vessel to form a secondary injury, so that the nurse can be exempted every 6 -8 hours/time of sealing and flushing to reduce the workload. In addition, when the infusion is needed again the next day, it is only necessary to sterilize the connection and connect the clip on the middle catheter (4). 6), that is, the infusion can be normally performed. If it needs to be placed again, it is pumped into the reservoir (10) when infusion of physiological saline for sealing.

The embodiment 1 and the embodiment 2 described above are only preferred embodiments of the present invention. It should be noted that various modifications, improvements, and additions and deletions of the components may be made by those skilled in the art without departing from the principles of the present invention.

Claims

An indwelling needle sustained release positive pressure device comprising a protective cap, a screw joint, a front catheter, a front three-way, a slow release conduit, a middle conduit, a clip, a rear tee, a rear duct, a tee seat, a positive pressure joint and a storage The liquid device and the clip are sleeved on the middle conduit, and the two ends of the slow release conduit and the middle conduit are respectively connected with the double hole ends of the front three passages and the rear three passages, and the front conduits are respectively connected with the single tees of the front tees and the small end portions of the spiral joints. Connecting, the large end of the screw joint is screwed to the protective cap, and the rear duct is respectively connected with the single hole end of the rear tee and the front part of the tee seat, and the positive pressure joint and the liquid reservoir are respectively screwed to the two ends of the rear part of the tee seat The indwelling needle sustained release positive pressure device has a double catheter, one of which is a slow release catheter with a microporous hole in the middle, and the other catheter is a middle catheter of the infusion, wherein the catheter is clipped by the clip, and the positive The hydraulic pressure released by the pressure joint and the reservoir forms a pressure, and the liquid medicine slowly flows out from the micropores of the sustained release conduit.
The indwelling needle sustained release positive pressure device according to claim 1, wherein the reservoir of the indwelling needle sustained release positive pressure device is a spring-loaded syringe in the rear inner cavity thereof, and the syringe is pumping the liquid medicine. The rear spring is compressed, releasing the plunger of the syringe, and the spring releases the pressure to form the positive pressure device.
The indwelling needle sustained release positive pressure device according to claim 1, wherein the front end of the screw joint of the indwelling needle sustained release positive pressure device can be rotated with the catheter of the catheter assembly of the straight or butterfly indwelling needle. Pick up.
The indwelling needle sustained release positive pressure device according to claim 1, wherein said indwelling needle sustained release positive pressure device is also connected to the front end of the front catheter and the catheter end of the catheter assembly of the Y-shaped indwelling needle. .
The indwelling needle sustained release positive pressure device according to claim 1, wherein the sustained release catheter of the indwelling needle sustained release positive pressure device is made of one material and has one or more micropores in between. As the chemical liquid passage, the pore diameter of the micropores is between 0.001 mm and 0.1 mm, and can also be formed by segmentation of different pore diameters. It can also be a solid core tube in which two materials are coextruded into a package, and the two materials are shrunk. The gap formed between the contact faces is different as the drug solution channel.
The indwelling needle sustained release positive pressure device according to claim 1, wherein: the positive pressure connector and the liquid reservoir of the rear end of the three-way seat of the indwelling needle sustained release positive pressure device are screwed together, For the change position, the positive pressure connector can also be replaced with a heparin cap.
The indwelling needle sustained release positive pressure device according to claim 1, wherein the syringe casing of the indwelling needle sustained release positive pressure device is screwed to the rear of the tee seat, and can also be designed as a unitary structure.
The indwelling needle sustained release positive pressure device according to claim 2, wherein the spring in the syringe of the indwelling needle sustained release positive pressure device is also an elastic reservoir or a reservoir or an elastomer. .
The indwelling needle sustained release positive pressure device according to any one of claims 1 to 8, wherein the clip of the indwelling needle sustained release positive pressure device is a one-handed clip or a clip.
The indwelling needle sustained release positive pressure device according to any one of claims 1, 2, 5, 6, 7, and 8, The utility model is characterized in that the indwelling needle sustained release positive pressure device can also be screwed and used on the central venous catheter joint seat, and has the same sustained release effect as the indwelling needle.