CN211383104U

CN211383104U - Venous catheter plugging device

Info

Publication number: CN211383104U
Application number: CN201920873537.7U
Authority: CN
Inventors: 曾凡洪
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-09-01
Anticipated expiration: 2029-06-06

Abstract

The utility model discloses a venous catheter stopper, which comprises a catheter, a three-way pipe, a plug, a linear connecting piece, a sealing part, a moving block, an adjusting part and a heparin cap, wherein the liquid inlet end of the catheter is in fluid conduction connection with the liquid outlet end of a first branch pipe of the three-way pipe, the liquid inlet end of a second branch pipe of the three-way pipe is detachably connected with the heparin cap, a third branch pipe of the three-way pipe is positioned in the adjusting part and is in sealing connection with the third branch pipe, and the protruding part of the moving block is in threaded connection with the inner side wall of the adjusting part; the plug is in transmission connection with the moving block through a linear connecting piece; the far end of the plug is positioned outside the liquid outlet end of the catheter, and the liquid outlet end of the catheter can be plugged when the near end of the plug is positioned in the liquid outlet end of the catheter; under the drive of the adjusting component, the plug can enter or exit the liquid outlet end of the catheter to achieve the effect of plugging or plugging removal; the catheter is a medical hose which is arranged in the blood vessel. The utility model discloses can effectively prevent blood refluence to the pipe in, can also show and reduce blood and form the thrombus in the pipe and lead to the lumen to block up and drop the probability that causes the pulmonary embolism, avoid nurse's infusion when finishing simultaneously and seal the pipe operation.

Description

Venous catheter plugging device

Technical Field

The invention relates to the field of infusion, in particular to a venous catheter occluder.

Background

When the medicine with large irritation to blood vessels such as chemotherapy medicine is infused in some severe patients or tumor patients, and the infusion needs to be carried out for a long time due to treatment, the deep vein indwelling tube mode is adopted for infusion in clinic at present, namely, the deep vein catheter is placed in the internal jugular vein, the subclavian vein and the femoral vein of the patient, so that the follow-up infusion needs to be facilitated. After the existing deep venous catheter finishes transfusion, heparin and physiological saline are mostly adopted for sealing the catheter, and then a clamp is used for clamping an extension tube to avoid the phenomenon of blood backflow, but the phenomenon that the blood backflow to the catheter forms thrombus cannot be completely avoided, and the clamp is easy to loosen and increase the probability that the blood backflow to the catheter forms thrombus; once a severe blockage of the venous catheter occurs, replacement is required and the escape of thrombus within the catheter into the blood vessel can have serious consequences for pulmonary embolism.

Disclosure of Invention

In view of the above, the present invention provides a venous catheter occluder capable of effectively preventing blood from flowing back into a venous catheter to form a thrombus, which can not only completely prevent blood from flowing back into the catheter, but also significantly reduce the probability of lumen occlusion and pulmonary embolism after the blood forms a thrombus in the catheter, and simultaneously avoid the operation of tube occlusion after the completion of infusion by a nurse, and reduce the nursing workload.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the venous catheter occluder comprises a catheter, a three-way pipe, a plug, a linear connecting piece, a sealing part, a moving block, an adjusting part and a heparin cap; the liquid inlet end of the guide pipe is in fluid conduction connection with the liquid outlet end of the first branch pipe of the three-way pipe, the liquid inlet end of the second branch pipe of the three-way pipe is detachably connected with the heparin cap, and the third branch pipe of the three-way pipe is positioned in the adjusting part and is in sealing connection with the adjusting part; the side wall of the third branch pipe of the three-way pipe is provided with a longitudinal sliding groove, two sides of the moving block are provided with protruding parts, and the protruding parts of the moving block are positioned in the longitudinal sliding groove of the side wall of the third branch pipe of the three-way pipe; the moving block protruding part is in threaded connection with the inner side wall of the adjusting part; the plug is in transmission connection with the moving block through the linear connecting piece, and the moving block moves back and forth in the third branch pipe of the three-way pipe along the longitudinal axis direction under the driving of the adjusting part; the catheter is a medical hose which is arranged in a blood vessel.

In the venous catheter occluder, the far end of the plug is positioned outside the liquid outlet end of the catheter, and the near end of the plug can enter or exit the liquid outlet end of the catheter under the driving of the adjusting part; when the near end of the plug is positioned in the liquid outlet end of the catheter, the liquid outlet end of the catheter can be plugged; under the drive of the adjusting component, the far end of the plug extends out of the liquid outlet end of the catheter, the far end and the near end of the plug are both positioned outside the liquid outlet end of the catheter, and the catheter is in a blocking removal state.

In the venous catheter occluder, the linear connecting piece in the plug and the linear connecting piece in the moving block are both provided with a fixing piece, the linear connecting piece is fixedly connected with the fixing piece, one end of the linear connecting piece and the fixing piece are simultaneously and fixedly connected with the plug, and the other end of the linear connecting piece and the fixing piece are simultaneously and fixedly connected with the moving block; the plug and the moving block are connected with the linear connecting piece firmly, and the dangerous situation that the linear connecting piece and/or the plug are separated in use can be effectively avoided.

According to the venous catheter occluder, the inner wall of the near end of the third branch pipe of the three-way pipe is provided with the clamping groove, the clamping groove is internally provided with the sealing part, the sealing part is made of medical rubber and other materials with good elasticity and toughness, and the sealing part is in sealing connection with the third branch pipe of the three-way pipe, so that liquid input through the second branch pipe of the three-way pipe can be effectively prevented from entering the third branch pipe; meanwhile, the sealing component is made of rubber with good elasticity, so that the linear connecting piece penetrating through the middle part of the sealing component has a moderate clamping effect and a good sealing effect, and the linear connecting piece penetrating through the middle part of the sealing component can move along the longitudinal axis direction without causing liquid in the second branch pipe of the three-way pipe to enter the third branch pipe.

According to the venous catheter occluder, the linear connecting piece is made of medical stainless steel wires and other materials with good elasticity, toughness and folding resistance, so that the venous catheter occluder can be bent along with a catheter and can also have a transmission function on the connected moving block and the plug; the transverse diameter of the linear connecting piece is smaller than the inner diameter 1/3 of the catheter, and the liquid flow in the catheter is not influenced.

According to the venous catheter stopper, the plug is made of polyurethane and other medical synthetic materials with good elasticity and toughness, the middle part of the plug is cylindrical, the outer diameter of the middle part of the plug is matched with the inner diameter of the catheter, and when the catheter is in a blocked state, the plug can freely slide in the catheter and can prevent blood from flowing backwards into the catheter; the two ends of the plug are provided with conical parts, so that the plug can be smoothly inserted into the conduit and recovered into the conduit; the outer diameter of the plug is obviously smaller than that of the catheter, when the plug completely extends out of the liquid outlet end of the catheter to enter the vascular cavity, blood flow cannot be influenced, and the conical parts at the two ends of the plug can also obviously reduce the probability of thrombus caused by blood turbulence.

The invention has the following beneficial effects:

1. the invention not only does not affect the normal transfusion, but also can prevent the blood from flowing back to the catheter to form thrombus to cause blockage, and simultaneously can avoid the operation of sealing the catheter when the transfusion of a nurse is finished.

2. The invention can effectively avoid the formation of thrombus in the venous catheter and the pulmonary embolism induced by the falling of the thrombus.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of a catheter occlusion state structure of the venous catheter occluder of the present invention;

FIG. 2 is a schematic structural view of a catheter unblocking state of the venous catheter occluder of the present invention;

figure 3 is a cross-sectional view of the venous catheter occluder of the present invention;

in the figures, 1-catheter; 2-a three-way pipe; 3-an adjustment member; 4-moving block; 5-a sealing member; 6-heparin cap; 7-a linear connector; 8-plug; 9-fixing piece.

Detailed Description

In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

Example 1

As shown in fig. 1, the intravenous catheter occluder of the present invention comprises a catheter 1, a three-way pipe 2, an adjusting part 3, a moving block 4, a plug 8, a linear connector 7 and a heparin cap 6, wherein a liquid inlet end of the catheter 1 is in fluid conduction connection with a liquid outlet end of a first branch pipe of the three-way pipe 2, a liquid inlet end of a second branch pipe of the three-way pipe 2 is detachably connected with the heparin cap 6, and a third branch pipe of the three-way pipe 2 is located in the adjusting part 3 and is in sealed connection with the adjusting part; the plug 8 is in transmission connection with the moving block 4 through the linear connecting piece 7; the far end of the plug 8 is positioned outside the liquid outlet end of the catheter 1, and the near end of the plug 8 can enter or exit the liquid outlet end of the catheter 1 under the driving of the adjusting component 3; when the near end of the plug 8 is positioned in the liquid outlet end of the catheter 1, the liquid outlet end of the catheter 1 can be plugged, and when the near end of the plug 8 is positioned outside the liquid outlet end of the catheter 1, the plugging of the liquid outlet end of the catheter 1 is released; one end of the linear connecting piece (7) is arranged in the plug (8), and the other end of the linear connecting piece (7) is arranged in the moving block 4; the catheter 1 is a medical hose, the linear connecting piece 7 is made of a medical stainless steel wire with good elasticity and toughness and is not easy to break, and the plug 8 is made of a medical synthetic material such as polyurethane with good elasticity and toughness.

The side wall of the third branch pipe of the three-way pipe 2 is provided with a longitudinal sliding groove, two sides of the moving block 4 are provided with protruding parts, the protruding parts of the moving block 4 are positioned in the longitudinal sliding groove of the side wall of the third branch pipe of the three-way pipe 2, and the inner wall of the adjusting part 3 is in threaded connection with the protruding parts of the moving block 4, as shown in fig. 3; the moving block 4 is in transmission connection with the plug 8 through the linear connecting piece 7.

In order to improve the safety of the present invention and solve the problem of the sealing property between the third branch pipe of the three-way pipe 2 and the adjusting part 3, in this embodiment, a rubber seal ring is disposed between the third branch pipe of the three-way pipe 2 and the adjusting part 3. In order to ensure that liquid in a second branch pipe of the three-way pipe 2 does not enter a third branch pipe and ensure the transmission connection function of the linear connecting piece 7, a clamping groove is arranged on the inner wall of the near end of the third branch pipe of the three-way pipe 2, and a sealing part 5 is arranged in the clamping groove; one end of the linear connecting piece 7 is fixedly connected with the moving block 4, the other end of the linear connecting piece 7 is fixedly connected with the plug 8, and the linear connecting piece 7 penetrates through the middle part of the sealing component 5 and can move along the longitudinal axis direction.

In order to avoid the linear connecting piece 7 from falling off from the plug 8 and the moving block 4 in the process of using the invention, in the embodiment, two ends of the linear connecting piece 7 are respectively fixedly connected with fixing pieces 9 positioned in the plug 8 and the moving block 4.

In this embodiment, when the liquid outlet end of the catheter 1 is plugged, the distal end of the plug 8 is located outside the liquid outlet end of the catheter 1, and the proximal end of the plug 8 is located inside the liquid outlet end of the catheter 1, as shown in fig. 1. When the liquid outlet end of the catheter 1 is in a state of releasing the blockage, the far end and the near end of the plug 8 are both positioned outside the liquid outlet end of the catheter 1, as shown in fig. 2.

When the device is used, the liquid outlet end of the catheter 1 is placed into a deep venous blood vessel cavity of a human body, then normal saline is injected into a second branch pipe of a three-way pipe of a deep venous catheter plugging device for filling, the linear connecting piece 7 is connected with the end of the plug 8 and is fed from the liquid inlet end of the catheter 1, the normal saline is synchronously injected into the liquid inlet end of the catheter 1, the plug 8 is fed to the liquid outlet end of the catheter 1, then the first branch pipe of the three-way pipe is connected with the liquid inlet end of the catheter 1 according to the structure shown in figure 1, the near end of the plug 8 at the liquid outlet end of the catheter 1 is plugged into the liquid outlet end of the catheter 1 through the regulation of the regulating part 3, and the purpose of preventing blood from flowing back into the venous catheter is achieved. When the blockage needs to be removed in preparation of transfusion, the adjusting component 3 is adjusted to enable the moving block 4 to move forwards along the longitudinal axis direction, the linear connecting piece 7 is used for driving and pushing the near end of the plug 8 to slide and extend out of the liquid outlet end of the conduit 1, the liquid outlet end of the conduit 1 is communicated with the human blood vessel recovery fluid, and the transfusion liquid medicine smoothly flows into the blood vessel. When the catheter 1 is to be blocked by transfusion, the adjusting part 3 is adjusted to enable the moving block 4 to move backwards, the linear connecting piece 7 pulls back the plug 8, the near end of the plug 8 is plugged into the liquid outlet end of the catheter 1 in a sliding mode until the liquid outlet end of the catheter 1 is blocked, and liquid flow is automatically stopped, so that the purpose of preventing blood from flowing back into the catheter 1 can be achieved.

Example 2

The venous catheter occluder in the present embodiment is different from the venous catheter occluder in embodiment 1 in that: the outer wall of the medical stainless steel wire adopted by the linear connecting piece 7 and the surface of the plug 8 are coated with silver ion antibacterial coatings, so that the occurrence of related infection in the catheter can be effectively prevented; the steel wire has good elasticity and bending strength, and meets the use requirement of pushing and pulling the plug 8 out of and back from the liquid outlet end of the conduit 1 in the embodiment.

The above examples are given for the purpose of illustrating the invention clearly and not for the purpose of limiting the same, and it will be apparent to those skilled in the art that, in light of the foregoing description, numerous modifications and variations can be made in the form and details of the embodiments of the invention described herein, and it is not intended to be exhaustive or to limit the invention to the precise forms disclosed.

Claims

1. The venous catheter occluder is characterized by comprising a catheter (1), a three-way pipe (2), a plug (8), a linear connecting piece (7), a sealing part (5), a moving block (4), an adjusting part (3) and a heparin cap (6), wherein the liquid inlet end of the catheter (1) is in fluid conduction connection with the liquid outlet end of a first branch pipe of the three-way pipe (2), the liquid inlet end of a second branch pipe of the three-way pipe (2) is detachably connected with the heparin cap (6), a third branch pipe of the three-way pipe (2) is positioned in the adjusting part (3) and is in sealing connection with the adjusting part (3), protruding parts are arranged on two sides of the moving block (4), the protruding parts on two sides of the moving block (4) are in threaded connection with the inner side wall of the adjusting part (3), one end of the linear connecting piece (7) is fixedly connected with the moving block (4), the other end of the linear connecting piece (7) is fixedly connected with the plug (8); the far end of the plug (8) is positioned outside the liquid outlet end of the catheter (1), the near end of the plug (8) can enter or exit the liquid outlet end of the catheter (1) under the driving of the adjusting component (3), the liquid outlet end of the catheter (1) can be plugged when the near end of the plug (8) is positioned in the liquid outlet end of the catheter (1), and the plugging of the liquid outlet end of the catheter (1) can be released when the far end and the near end of the plug (8) are both positioned outside the liquid outlet end of the catheter (1).

2. The venous catheter occluder of claim 1, wherein the inner wall of the proximal end of the third branch of the three-way tube (2) is provided with a groove, and the sealing part (5) is arranged in the groove of the proximal end of the third branch of the three-way tube (2) and is connected in a sealing way.

3. The venous duct occluder of claim 2, characterized in that the sealing member (5) has a moderate clamping effect and a good sealing effect on the wire-like connection (7) passing through the intermediate portion.

4. The venous duct occluder of claim 2, wherein the third shunt side wall of the tee (2) is provided with a longitudinal chute.

5. The venous duct occluder of any of claims 1 or 4, wherein the moving block (4) protrusion is disposed within a third shunt sidewall longitudinal runner of the three-way tube (2).

6. The venous duct occluder of claim 3, wherein one end of the linear connecting piece (7) is provided with a fixing piece (9) inside the moving block (4) and fixedly connected with the fixing piece, and the other end of the linear connecting piece (7) is also provided with a fixing piece (9) inside the choke plug (8) and fixedly connected with the choke plug.

7. The venous duct occluder of claim 6, characterized in that both ends of the stopper (8) have a conical shape, the middle part of the stopper (8) being cylindrical.

8. The venous duct occluder of claim 7, wherein the outer diameter of the stopper (8) matches the inner diameter of the catheter (1), the stopper (8) being slidable within the catheter (1) and being liquid-tight.