CN112043904A - Venous catheter plugging device - Google Patents
Venous catheter plugging device Download PDFInfo
- Publication number
- CN112043904A CN112043904A CN201910503911.9A CN201910503911A CN112043904A CN 112043904 A CN112043904 A CN 112043904A CN 201910503911 A CN201910503911 A CN 201910503911A CN 112043904 A CN112043904 A CN 112043904A
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- China
- Prior art keywords
- catheter
- plug
- outlet end
- liquid outlet
- moving block
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/20—Closure caps or plugs for connectors or open ends of tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M2005/1401—Functional features
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Pulmonology (AREA)
- Vascular Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention 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, the liquid inlet end of a third branch pipe of the three-way pipe is positioned in the adjusting part and is in sealing connection with the adjusting part, 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 invention can effectively prevent blood from flowing back into the catheter, can also obviously reduce the probability of pulmonary embolism caused by lumen blockage and falling off due to thrombus formed in the catheter by the blood, and simultaneously avoids the operation of tube sealing when the transfusion of a nurse is finished.
Description
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 liquid inlet end of 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 chute, and the protruding part of the moving block is positioned in the longitudinal sliding chute 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, a clamping groove is formed in the liquid outlet end of the third branch pipe of the three-way pipe, a sealing part is arranged in the clamping groove, 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 surface of the linear connecting piece is coated with a hydrophilic coating, and the transverse diameter of the linear connecting piece is smaller than the inner diameter 1/3 of the catheter, so that the flow of liquid in the catheter is not influenced.
According to the venous catheter stopper, the plug is made of medical synthetic materials such as polyurethane with good elasticity and toughness, the surface of the plug is coated with a hydrophilic coating, 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 venous catheter occluder of the 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 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, and the liquid inlet end of 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; 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 which has good elasticity and toughness and is not easy to break, the plug 8 is made of medical synthetic materials such as polyurethane with good elasticity and toughness, and hydrophilic coatings are coated on the surfaces of the linear connecting piece 7 and the plug 8.
The side wall of the third branch pipe of the three-way pipe 2 is provided with a longitudinal sliding groove, the protruding part of the moving block 4 is 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 part 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 in the liquid outlet 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 and the plug 8 and the moving block 4 from falling off in the process of using the invention, in the embodiment, fixing pieces 9 are respectively arranged at two ends of the linear connecting piece 7 and the inner parts of the plug 8 and the moving block 4 and are fixedly connected with the two ends.
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, one end of the linear connecting piece 7 connected with the plug 8 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 (8)
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), the liquid inlet end of 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, and the protruding part of the moving block (4) is in threaded connection with the inner side wall of the adjusting part (3); 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 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); under the drive of the adjusting component (3), the plug (8) can enter or exit from the liquid outlet end of the catheter (1) to achieve the effect of plugging or unplugging the liquid outlet end of the catheter (1); the catheter (1) is a medical hose which is arranged in a blood vessel.
2. The venous duct occluder of claim 1, wherein the third lateral wall of the three-way tube (2) is provided with a longitudinal sliding groove, the moving block (4) is protruded and positioned in the longitudinal sliding groove of the third lateral wall of the three-way tube (2), and the moving block (4) moves back and forth in the longitudinal axis direction in the third lateral wall of the three-way tube (2) when the adjusting part (3) is driven under the limit of the longitudinal sliding groove of the third lateral wall of the three-way tube (2).
3. The venous catheter occluder of claims 1-2, wherein the sealing member (5) is located in a groove in the outlet end of the third branch of the three-way tube (2) and sealingly connected thereto, the sealing member (5) being capable of preventing liquid entering through the second branch of the three-way tube (2) from entering the third branch and also of allowing the linear connection (7) to move longitudinally through the middle of the sealing member (5).
4. The venous duct occluder of claims 1-3, wherein both ends of the linear connecting member (7) are located in the plug (8) and the moving block (4), respectively, and the linear connecting member (7) in the plug (8) and the moving block (4) are provided with and fixedly connected with fixing plates (9).
5. The venous catheter occluder of any one of claims 1 to 4, wherein in the state of occluding said catheter (1), the distal end of said plug (8) at the outlet end of said catheter (1) is located outside the outlet end of said catheter (1), and the proximal end of said plug (8) at the outlet end of said catheter (1) is located inside the outlet end of said catheter (1).
6. The venous duct occluder of any of claims 1 to 5, wherein both the distal and proximal ends of the stopper (8) are located outside the outflow end of the catheter (1) in the unblocked state of the catheter (1).
7. The device according to any one of claims 1 to 6, characterized in that the outer diameter of the plug (8) is matched with the inner diameter of the catheter (1), so that the plug (8) can slide freely in the catheter (1) when the catheter (1) is in a blocked state, and the plug (8) can prevent blood from flowing back into the catheter (1).
8. The venous duct occluder of claims 1-7, wherein the middle part of the stopper (8) remote from the outlet end of the duct (1) is cylindrical; both ends of the plug (8) are provided with conical parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910503911.9A CN112043904A (en) | 2019-06-06 | 2019-06-06 | Venous catheter plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910503911.9A CN112043904A (en) | 2019-06-06 | 2019-06-06 | Venous catheter plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112043904A true CN112043904A (en) | 2020-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910503911.9A Pending CN112043904A (en) | 2019-06-06 | 2019-06-06 | Venous catheter plugging device |
Country Status (1)
| Country | Link |
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| CN (1) | CN112043904A (en) |
Citations (11)
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| US20100069855A1 (en) * | 2008-09-16 | 2010-03-18 | Engineering Resources Group, Inc. | Clog-preventing valved catheter and method of using the catheter |
| US20130289527A1 (en) * | 2005-11-10 | 2013-10-31 | Phase One Medical, Llc | Catheter device |
| US20140107616A1 (en) * | 2012-10-17 | 2014-04-17 | M. Samy Ahmed Hamboly | Bloodless Arterial Percutaneous Insertion System |
| CN204072962U (en) * | 2014-09-01 | 2015-01-07 | 谢世庚 | Spiral push-rod preventing thrombosis venous detaining needle |
| CN108578825A (en) * | 2018-05-17 | 2018-09-28 | 北京仰生恒泰科技有限责任公司 | A kind of closure type intravenous infusion line device |
| CN108578826A (en) * | 2018-05-16 | 2018-09-28 | 曾凡洪 | A kind of anti-blood back venous detaining needle |
| CN108992737A (en) * | 2018-08-11 | 2018-12-14 | 闫红魁 | Preventing thrombosis not plugging remaining needle |
| CN109550105A (en) * | 2019-01-27 | 2019-04-02 | 北京仰生恒泰科技有限责任公司 | A kind of functional intravenous guide tube device blocked |
| CN109550104A (en) * | 2019-01-27 | 2019-04-02 | 北京仰生恒泰科技有限责任公司 | A kind of functional intravenous guide tube device blocked |
-
2019
- 2019-06-06 CN CN201910503911.9A patent/CN112043904A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130289527A1 (en) * | 2005-11-10 | 2013-10-31 | Phase One Medical, Llc | Catheter device |
| US20070225682A1 (en) * | 2006-03-24 | 2007-09-27 | Ash Stephen R | Anti-clotting indwelling catheter |
| US20090036836A1 (en) * | 2007-08-01 | 2009-02-05 | Marcus Nystrom | Peripheral catheter assembly and method of using it |
| US20100069855A1 (en) * | 2008-09-16 | 2010-03-18 | Engineering Resources Group, Inc. | Clog-preventing valved catheter and method of using the catheter |
| US20140107616A1 (en) * | 2012-10-17 | 2014-04-17 | M. Samy Ahmed Hamboly | Bloodless Arterial Percutaneous Insertion System |
| CN204072962U (en) * | 2014-09-01 | 2015-01-07 | 谢世庚 | Spiral push-rod preventing thrombosis venous detaining needle |
| CN108578826A (en) * | 2018-05-16 | 2018-09-28 | 曾凡洪 | A kind of anti-blood back venous detaining needle |
| CN108578825A (en) * | 2018-05-17 | 2018-09-28 | 北京仰生恒泰科技有限责任公司 | A kind of closure type intravenous infusion line device |
| CN108992737A (en) * | 2018-08-11 | 2018-12-14 | 闫红魁 | Preventing thrombosis not plugging remaining needle |
| CN109550105A (en) * | 2019-01-27 | 2019-04-02 | 北京仰生恒泰科技有限责任公司 | A kind of functional intravenous guide tube device blocked |
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Application publication date: 20201208 |
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