CN219804112U - Blood return prevention central venous catheter - Google Patents
Blood return prevention central venous catheter Download PDFInfo
- Publication number
- CN219804112U CN219804112U CN202320944855.4U CN202320944855U CN219804112U CN 219804112 U CN219804112 U CN 219804112U CN 202320944855 U CN202320944855 U CN 202320944855U CN 219804112 U CN219804112 U CN 219804112U
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- China
- Prior art keywords
- catheter
- cavity
- plugging
- cylinder
- central venous
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- 239000008280 blood Substances 0.000 title claims abstract description 27
- 210000004369 blood Anatomy 0.000 title claims abstract description 27
- 230000002265 prevention Effects 0.000 title claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 44
- 238000002347 injection Methods 0.000 claims abstract description 44
- 238000007789 sealing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 19
- 239000002775 capsule Substances 0.000 abstract description 17
- 239000002504 physiological saline solution Substances 0.000 abstract description 8
- 239000000243 solution Substances 0.000 description 3
- 230000036541 health Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000000151 anti-reflux effect Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model is applicable to the technical field of medical instruments, and provides a blood return prevention central venous catheter which comprises a catheter main body, wherein a catheter main cavity and a catheter side cavity are formed in the catheter main body; the catheter main body further comprises a plugging cavity, a first plugging bag body and a second plugging bag body are respectively arranged on the plugging cavity, the first plugging bag body is matched with the catheter main cavity, and the second plugging bag body is matched with the catheter side cavity; the central venous catheter for preventing blood return also comprises an injection part connected with the blocking cavity, physiological saline is injected into the blocking cavity through the injection part, and pressure is applied to the injection part, so that the first blocking capsule body and the second blocking capsule body swell, the first blocking capsule body swells to block the main cavity of the catheter, and the second blocking capsule body swells to block the side cavity of the catheter, so that the blood return phenomenon is avoided.
Description
Technical Field
The utility model belongs to the technical field of medical instruments, and particularly relates to a central venous catheter capable of preventing blood return.
Background
The central venous catheter is placed as a common clinical monitoring and treatment means, and a simple and painless method is provided for intravenous drug treatment, rapid blood transfusion and volume treatment of blood-loss shock in operation, total parenteral central venous nutrition, blood transfusion and blood supplies, blood sample collection, central venous pressure monitoring and the like through the inlet of the fixed central venous catheter, and compared with a single-cavity central venous catheter, the double-cavity central venous catheter can simultaneously provide two independent transfusion paths, has higher flow velocity, and is very wide in clinical application ways.
However, for the conventional dual-lumen central venous catheter, although two independent infusion paths can be provided at the same time, in practical use, a blood return phenomenon is easy to occur, and a large amount of blood in a venous tube possibly flows into the catheter, so that life health of a patient is affected.
Disclosure of Invention
The embodiment of the utility model aims to provide a central venous catheter for preventing blood return, which aims to solve the problem that the traditional double-cavity central venous catheter is easy to cause the phenomenon of blood return.
In order to achieve the above purpose, the present utility model provides the following technical solutions.
The central venous catheter for preventing blood return comprises a catheter main body, wherein the catheter main body is provided with a catheter main cavity and a catheter side cavity, at least one main cavity side hole is formed in the catheter main cavity, and at least one side cavity side hole is formed in the catheter side cavity; the end part of the catheter main body is fixedly arranged on the connecting seat;
the catheter main body further comprises a plugging cavity, a first plugging bag body and a second plugging bag body are respectively arranged on the plugging cavity, the first plugging bag body is matched with the catheter main cavity, and the second plugging bag body is matched with the catheter side cavity;
the central venous catheter for preventing blood return also comprises an injection part connected with the blocking cavity, physiological saline is injected into the blocking cavity through the injection part, and pressure is applied to the injection part, so that the first blocking capsule body and the second blocking capsule body swell, the first blocking capsule body swells to block the main cavity of the catheter, and the second blocking capsule body swells to block the side cavity of the catheter, so that the blood return phenomenon is avoided.
Further, the injection part comprises a supporting cylinder, a cylinder body is coaxially and fixedly arranged in the supporting cylinder, and the non-open end of the cylinder body is connected with the plugging cavity through an injection tube, so that physiological saline in the cylinder body can be injected into the plugging cavity through the injection tube.
Further, a piston is arranged in the cylinder body in a sealing sliding manner; the injection part also comprises a propulsion assembly, wherein the propulsion assembly is used for pushing the piston to move in the cylinder body.
Further, the propelling component further comprises a propelling cylinder, and the propelling cylinder is screwed into the opening of the supporting cylinder in a threaded connection mode, so that when the propelling cylinder rotates relative to the supporting cylinder, the propelling cylinder can generate feeding motion relative to the supporting cylinder; the pushing cylinder end part is also fixedly provided with a pressing handle; the piston is fixedly arranged at one end of the piston rod, and the other end of the piston rod is fixedly connected with the pressing handle, so that the distance between the pushing cylinder and the supporting cylinder is adjusted, and the piston can move in the cylinder body.
Further, an injection channel is arranged in the piston rod, one end of the injection channel is communicated with the inner cavity of the cylinder body, the other end of the injection channel is communicated with an internal thread groove, and the internal thread groove is formed in the pressing handle; the injection channel is also internally provided with a rubber sealing plug.
Further, the propulsion assembly further comprises an external thread blocking piece matched with the internal thread groove, and the external thread blocking piece is fixed in the internal thread groove by screwing, so that the end part of the injection channel is sealed and blocked.
Compared with the prior art, the blood return prevention central venous catheter provided by the utility model has the advantages that the normal saline is injected into the plugging cavity through the injection part and is applied to pressure, so that the first plugging bag body and the second plugging bag body bulge, the first plugging bag body bulges the main cavity of the catheter, and the second plugging bag body bulges the side cavity of the catheter, so that the blood return phenomenon is avoided, the use effect is good, and the problem that a large amount of blood in a venous tube possibly flows into the catheter and affects the life health of a patient in the traditional double-cavity central venous catheter is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present utility model.
FIG. 1 is a block diagram of an anti-flashback central venous catheter of the present utility model;
FIG. 2 is a schematic view of the structure of an injection part in an anti-reflux central venous catheter provided by the utility model;
fig. 3 is a schematic structural view of a propulsion assembly in an injection part according to the present utility model.
In fig. 1-3: 100. a catheter body; 101. a catheter main lumen; 1011. a main cavity side hole; 102. a catheter side lumen; 1021. side hole of side cavity; 103. plugging the cavity; 1031. a first occlusion capsule; 1032. a second occlusion balloon; 200. a connecting seat; 201. a fixed wing structure; 300. an injection part; 301. a support cylinder; 302. a syringe; 303. a cylinder; 304. a piston; 305. a propulsion cylinder; 306. pressing the handle; 3061. an internal thread groove; 307. an injection channel; 308. a rubber sealing plug; 309. an external thread block; 310. a piston rod.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Specific implementations of the utility model are described in detail below in connection with specific embodiments.
As shown in fig. 1, in an embodiment of the present utility model, an anti-back blood central venous catheter includes a catheter main body 100, where the catheter main body 100 has a catheter main cavity 101 and a catheter side cavity 102, at least one main cavity side hole 1011 is formed on the catheter main cavity 101, and at least one side cavity side hole 1021 is formed on the catheter side cavity 102; the end of the catheter main body 100 is fixedly arranged on the connecting seat 200, and the connecting seat 200 is further provided with a fixing wing structure 201, so that the fixing of the blood return prevention central venous catheter is facilitated.
In order to realize the plugging of the main catheter cavity 101 and the side catheter cavity 102, as shown in fig. 1-3, in the embodiment of the present utility model, the main catheter body 100 further includes a plugging cavity 103, a first plugging balloon 1031 and a second plugging balloon 1032 are respectively disposed on the plugging cavity 103, where the first plugging balloon 1031 is matched with the main catheter cavity 101, and the second plugging balloon 1032 is matched with the side catheter cavity 102.
Further, in this embodiment of the present utility model, the central venous catheter for preventing blood return further includes an injection portion 300 connected to the occlusion cavity 103, and physiological saline is injected into the occlusion cavity 103 through the injection portion 300 and applied to the pressure, so that the first occlusion capsule 1031 and the second occlusion capsule 1032 swell, the swelled first occlusion capsule 1031 occludes the main catheter cavity 101, and the swelled second occlusion capsule 1032 occludes the side catheter cavity 102, so as to avoid the occurrence of blood return phenomenon.
Specifically, as shown in fig. 2-3, in the embodiment of the present utility model, the injection portion 300 includes a support cylinder 301, a cylinder 303 is coaxially and fixedly disposed in the support cylinder 301, and a non-open end of the cylinder 303 is connected to the plugging chamber 103 through an injection tube 302, so that physiological saline in the cylinder 303 can be injected into the plugging chamber 103 through the injection tube 302.
Further, in the embodiment of the present utility model, a piston 304 is slidably disposed in the cylinder 303 in a sealing manner; the injection part 300 further comprises a pushing assembly for pushing the piston 304 to move within the cylinder 303.
Specifically, in the embodiment of the present utility model, the propulsion assembly further includes a propulsion cylinder 305, and the propulsion cylinder 305 is screwed into the opening of the support cylinder 301 by a threaded connection manner, so that when the propulsion cylinder 305 rotates relative to the support cylinder 301, the propulsion cylinder 305 can generate a feeding motion relative to the support cylinder 301; the end part of the pushing cylinder 305 is also fixedly provided with a pressing handle 306; the piston 304 is fixedly mounted at one end of the piston rod 310, and the other end of the piston rod 310 is fixedly connected with the pressing handle 306, so that the piston 304 can move in the cylinder 303 by adjusting the distance between the pushing cylinder 305 and the supporting cylinder 301.
Further, in the embodiment of the present utility model, the piston rod 310 further has an injection channel 307, one end of the injection channel 307 is communicated with the inner cavity of the cylinder 303, the other end of the injection channel 307 is communicated with an internal thread groove 3061, and the internal thread groove 3061 is opened on the pressing handle 306; the injection channel 307 also has a rubber sealing plug 308 inside.
Still further, in an embodiment of the present utility model, the propulsion assembly further includes an external thread block 309 that mates with the internal thread groove 3061, and the external thread block 309 is fastened by screwing the external thread block 309 so that the external thread block 309 is fixed in the internal thread groove 3061 to seal and block the end of the injection channel 307.
In the specific use process of the injection part 300 provided by the utility model, the syringe tube of the injector is inserted into the cylinder 303 from the injection channel 307 so as to inject physiological saline into the cylinder 303, after the injection is finished, the syringe tube of the injector extends out of the injection channel 307, the arranged rubber sealing plug 308 prevents liquid leakage, and the injection channel 307 can be effectively plugged through the external thread plugging block 309; then, the pushing cylinder 305 is driven to rotate by rotating the pressing handle 306, so that the pushing cylinder 305 is continuously screwed into the supporting cylinder 301, and the piston 304 is pushed to move in the cylinder 303 to squeeze the physiological saline, so that the physiological saline is pressed into the blocking cavity 103, the first blocking capsule 1031 and the second blocking capsule 1032 are further swelled, the swelled first blocking capsule 1031 blocks the main catheter cavity 101, and the swelled second blocking capsule 1032 blocks the side catheter cavity 102, so that the occurrence of the blood return phenomenon is avoided.
Although embodiments of the utility model have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present utility model. Additional modifications will readily occur to those skilled in the art. Therefore, the utility model is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
1. The central venous catheter for preventing blood return comprises a catheter main body, wherein the catheter main body is provided with a catheter main cavity and a catheter side cavity, at least one main cavity side hole is formed in the catheter main cavity, and at least one side cavity side hole is formed in the catheter side cavity; the end part of the catheter main body is fixedly arranged on the connecting seat; the method is characterized in that:
the catheter main body further comprises a plugging cavity, a first plugging bag body and a second plugging bag body are respectively arranged on the plugging cavity, the first plugging bag body is matched with the catheter main cavity, and the second plugging bag body is matched with the catheter side cavity;
the central venous catheter for preventing blood return also comprises an injection part connected with the plugging cavity.
2. The anti-flashback central venous catheter of claim 1, wherein the injection portion comprises a support cylinder, a cylinder is coaxially and fixedly arranged in the support cylinder, and a non-open end of the cylinder is connected with the plugging cavity through an injection tube.
3. The anti-flashback central venous catheter of claim 2, wherein a piston is slidably disposed in the cylinder; the injection part also comprises a pushing component which is used for pushing the piston to move in the cylinder body.
4. The anti-flashback central venous catheter of claim 3, wherein the propulsion assembly further comprises a propulsion barrel threaded into the opening of the support barrel; the pushing cylinder end part is also fixedly provided with a pressing handle; the piston is fixedly arranged at one end of the piston rod, and the other end of the piston rod is fixedly connected with the pressing handle.
5. The blood return prevention central venous catheter of claim 4, wherein the piston rod is internally provided with an injection channel, one end of the injection channel is communicated with the inner cavity of the cylinder body, the other end of the injection channel is communicated with an internal thread groove, and the internal thread groove is formed on the pressing handle; the injection channel is also internally provided with a rubber sealing plug.
6. The anti-flashback central venous catheter of claim 5, wherein the pusher assembly further comprises an external thread block that mates with the internal thread groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320944855.4U CN219804112U (en) | 2023-04-24 | 2023-04-24 | Blood return prevention central venous catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320944855.4U CN219804112U (en) | 2023-04-24 | 2023-04-24 | Blood return prevention central venous catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219804112U true CN219804112U (en) | 2023-10-10 |
Family
ID=88215727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320944855.4U Active CN219804112U (en) | 2023-04-24 | 2023-04-24 | Blood return prevention central venous catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219804112U (en) |
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2023
- 2023-04-24 CN CN202320944855.4U patent/CN219804112U/en active Active
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