CN213189934U - Negative pressure catheter thrombus taking device - Google Patents
Negative pressure catheter thrombus taking device Download PDFInfo
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- CN213189934U CN213189934U CN202021860961.7U CN202021860961U CN213189934U CN 213189934 U CN213189934 U CN 213189934U CN 202021860961 U CN202021860961 U CN 202021860961U CN 213189934 U CN213189934 U CN 213189934U
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Abstract
The utility model discloses a negative pressure catheter thrombus taking device, which belongs to the technical field of medical instruments and comprises a transverse pipe and a containing pipe, wherein a thrombus taking rod is arranged in the transverse pipe, one end of the thrombus taking rod is provided with a conical drill bit, the other end of the thrombus taking rod is connected with the inner wall of the tail end of the transverse pipe through an elastic piece, and the end of the thrombus taking rod provided with the conical drill bit extends out of the opening end of the transverse pipe and also comprises a driving mechanism and a lifting mechanism; the transverse pipe is also communicated with a negative pressure pipe, and the other end of the negative pressure pipe is connected with a negative pressure forming device; this thrombectomy ware can be under the negative pressure condition, and go into pipe thrombus through getting the tie rod to stably snatch the thrombus through the drill bit, when snatching the thrombus, through the negative pressure effect, toward external suction to blood, drive the thrombus to external together, thereby realize effectively, safely getting the thrombus, this thrombectomy ware security is high, doctor-patient personnel convenient operation has improved doctor-patient satisfaction simultaneously.
Description
Technical Field
The utility model relates to the technical field of medical equipment, especially, relate to a negative pressure pipe thrombectomy ware.
Background
Before hemodialysis, uremic patients need to establish a blood vessel access, and a stable and reliable blood vessel access is a basic guarantee for smoothly performing hemodialysis, so that the blood vessel access is a 'life line' of the patients. However, the condition of the blood vessels of a large number of patients is poor, and the self-body arteriovenous internal fistula cannot be established, and the patients often need to be kept with a long-term catheter through the internal jugular vein or the femoral vein.
Because blood has a coagulation mechanism and the catheter has an irritation effect on the blood of a human body as a foreign matter, the right internal jugular vein catheter or the femoral vein catheter tends to form thrombus in the catheter from the beginning of the implantation, and particularly, the thrombus incidence rate of the femoral vein catheter is extremely high in the lower limb with low blood flow speed. At present, the commonly used method for treating thrombus in the catheter is generally drug thrombolysis treatment, which is easy to cause hemorrhage of important visceral organs of a patient on one hand, and on the other hand, for thrombus with larger volume, the drug thrombolysis effect is often poor, so that the function of the catheter is lost.
At present, a plurality of thrombus removal devices are reported, but the existing thrombus removal devices have the defects of high technical requirements on operators, easy thrombus removal, pulmonary embolism and the like.
Disclosure of Invention
An object of the utility model is to provide a negative pressure pipe thrombectomy device to solve the above-mentioned problem.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a novel negative pressure catheter bolt taking device comprises a transverse pipe and a containing pipe, wherein one end of the transverse pipe is an open end, the other end of the transverse pipe is communicated and sealed with the containing pipe, a bolt taking rod is arranged in the transverse pipe, a conical drill bit is arranged at one end of the bolt taking rod, the other end of the bolt taking rod is connected with the inner wall of the tail end of the transverse pipe through an elastic piece, one end of the bolt taking rod, provided with the conical drill bit, extends out of the open end of the transverse pipe, the novel negative pressure catheter bolt taking device further comprises a driving mechanism for driving the bolt taking rod to perform spiral motion along the axial direction of the transverse pipe, and a lifting mechanism for lifting the driving mechanism; the transverse pipe is also communicated with a negative pressure pipe, and the other end of the negative pressure pipe is connected with a negative pressure forming device.
In the thrombus remover, the opening end of the transverse pipe is connected with the catheter in a thread manner and the like, and is similar to the thread of a heparin cap for plugging the catheter, firstly, the opening end is hermetically connected with a catheter port to be thrombus removed, so that the catheter is communicated with the thrombus remover and is closed, and then, the negative pressure forming device is started, so that the common space formed by the thrombus remover and the catheter is in a negative pressure state, namely, a negative pressure environment is constructed; under the negative pressure environment, actuating mechanism is started for get the thrombus that the tie rod spirally stretched into in the pipe, get the cone drill bit of tie rod tip and can slowly bore into the thrombus, the thrombus can be taken to this and get holding of tie ware under the combined action of the drawing of tie rod and negative pressure suction, and the thrombus can not drop to the patient internal under the negative pressure in advance, thereby realizes effectively, safely getting the tie.
The driving mechanism can be a plurality of existing mechanisms, for example, a screw transmission is adopted, two mutually meshed screw rods are adopted, one screw rod is connected with a motor to serve as a driving rod, the other screw rod is fixedly connected with the bolt taking rod to serve as a driven rod, the motor is started, the driving rod rotates to drive the driven rod to rotate, and therefore the bolt taking rod moves spirally outside the transverse pipe to take out bolts;
after the thrombus is taken out, the power supply of the motor of the driving mechanism is closed, the lifting mechanism is started, the driving rod is lifted upwards, so that the two meshed screw rods are separated, namely, the driving rod is separated from the driven rod, and the thrombus taking rod is directly retracted under the action of the tail elastic part instead of being spirally retracted, so that more thrombus can be taken out of the catheter stably;
the lifting mechanism described above may be of many existing constructions.
The utility model discloses a violently the preferred transparent plastic material that adopts of pipe, transparent material can clearly observe the inside part function condition of violently managing. In addition, a method for controlling the starting and stopping of a motor in a transverse pipe is a known technology, for example, when the transverse pipe is subjected to injection molding, a lead communicated with the motor is embedded, and the other end of the lead is connected with a starting and stopping switch outside the transverse pipe, so that the starting and stopping of the motor in the transverse pipe can be controlled outside the transverse pipe.
As a preferred technical scheme: the bolt taking rod is a steel wire.
The embolectomy rod is selected to be a rigid tube so as to be driven by the driving device to enter the catheter and thrombus, but the front section of the embolectomy rod is bendable, namely has certain toughness because the catheter is bent and the bendable part is about 25cm, and of course, the whole embolectomy rod can be bent because the whole embolectomy rod also has corresponding rigidity.
As a preferred technical scheme: the surface of the conical drill bit is provided with a spiral convex line. Is more beneficial to drilling into the thrombus.
As a preferred technical scheme: the conical drill bit is hollow. The drill bit can be the hollow drill bit that adopts steel wire etc. to curl into coniform, that the inner space can hold the thrombus, can snatch the thrombus more stably.
As a preferred technical scheme: the negative pressure forming device is a negative pressure aspirator.
As a preferred technical scheme: the negative pressure forming device is an injector, and a valve is arranged on the negative pressure pipe.
The negative pressure forming device can adopt various forms of devices, such as a negative pressure aspirator commonly used in hospitals, and generally comprises a pressure regulator, a liquid collecting bottle, a hose and the like. The liquid collecting bottle is provided with two hose connectors, one hose connector is connected with the negative pressure terminal, and the other hose connector is connected with the working cavity. When the negative pressure terminal is connected, air negative pressure is generated in the liquid collecting bottle, and the negative pressure guides dirt (such as dirty blood, phlegm and the like) to flow into the liquid collecting bottle from another hose;
the air can also be sucked by an injector, if the injector is adopted, a valve needs to be arranged, the injector is closed after being fully pumped, and the valve is opened after the air is exhausted to continue pumping.
As a preferred technical scheme: the negative pressure pipe is also connected with a pressure gauge. The magnitude of the pressure can be clearly known.
As a preferred technical scheme: the open end of the transverse pipe is provided with threads which are used for being connected with the guide pipe, and the open end of the transverse pipe can be connected with the guide pipe in a sealing manner in an interference fit manner, namely in a plug-in manner and the like besides the threaded connection.
Compared with the prior art, the utility model has the advantages of: this thrombectomy ware can be under the negative pressure condition, and the interior thrombus of pipe is bored into through getting the tie rod to stably snatch the thrombus through the drill bit, when snatching the thrombus, through the negative pressure effect, toward external suction to blood, drive the thrombus to external together, thereby realize effectively, safely getting the thrombus, make the interior thrombus of pipe can not drop to the patient internal. The thrombus taking device has high safety, is convenient for doctors and patients to operate, causes less pain to the patients and simultaneously improves the satisfaction degree of the doctors and the patients.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion B of FIG. 1;
FIG. 3 is a schematic view of the screw of FIG. 1;
fig. 4 is a schematic structural view of the gear of fig. 1.
In the figure: 1. a transverse tube; 2. accommodating the tube; 3. taking a bolt rod; 4. a drill bit; 5. a spring; 61. a first screw; 62. a second screw; 71. a first motor; 72. a second motor; 81. a first fixing plate; 82. a second fixing plate; 91. a first gear; 92. a second gear; 10. a negative pressure tube; 11. a connecting port; 12. a valve; 13. a pressure gauge; A. an open end.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example (b):
referring to fig. 1-4, a negative pressure catheter thrombus extractor comprises a horizontal tube 1 and a containing tube 2, wherein one end of the horizontal tube 1 is an open end a, and the other end of the horizontal tube 1 is communicated and sealed with the containing tube 2, and the horizontal tube 1 and the containing tube 2 are both made of transparent plastic materials;
a bolt taking rod 3 is arranged in the transverse pipe 1, the bolt taking rod 3 is a steel wire in the embodiment, one end of the bolt taking rod 3 is provided with a conical drill bit 4, the drill bit 4 in the embodiment adopts a drill bit which is spirally curled into a conical shape and is hollow, the other end of the bolt taking rod 3 is connected with the inner wall of the tail end of the transverse pipe 1 through a spring 5, one end of the bolt taking rod 3, which is provided with the conical drill bit 4, extends out from the opening end A of the transverse pipe 1, the opening end A is provided with a thread for connecting with a conduit, the thread is consistent with the thread of a heparin cap used for sealing a central venous catheter in the prior art and is mainly used for connecting with the conduit, so that the whole bolt taking device is communicated with the conduit to be screwed and isolated from the outside atmosphere, and negative pressure is conveniently;
also comprises a driving mechanism for driving the bolt taking rod to perform spiral motion along the axial direction of the transverse pipe,
the drive mechanism of the present embodiment comprises two intermeshing screws, see fig. 3, namely a first screw 61 and a second screw 62; the first motor 71 is used for providing power for the first screw rod 61, the first motor 71 is fixedly connected with the first screw rod 61 through an output shaft of the first motor 71, the first motor 71 is connected to a first fixing plate 81, and the first motor 71 can move up and down in the fixing plate 81 through a through groove; the upper end of the first fixing plate 81 is fixedly connected with the transverse pipe 1; the second screw rod 62 is fixedly connected with the bolt taking rod 3;
a lifting mechanism for lifting the driving mechanism is also included, the lifting mechanism can be of many existing structures, the lifting structure of the embodiment is as follows, see fig. 4:
comprises a second motor 72 and a second fixing plate 82, the second motor 72 is fixedly connected with the second fixing plate 82 through a bearing, the upper end of the second fixing plate 82 is fixedly connected with the transverse tube 1, a first gear 91 and a second gear 92 which are meshed with each other are arranged between the first motor 71 and the second motor 72, wherein the first gear 91 is fixedly connected with the first motor 71, the second gear 92 is connected with an output shaft of the second motor 72,
the second gear 92 drives the first gear 91 and the first motor 71, so that the first motor 71 moves up and down in the vertical direction; when the first motor 71 moves upward, the second screw 62 is disengaged from the first screw 61. How to achieve the up-and-down sliding is also a known technology known by those skilled in the art, and there are many structures in the prior art to achieve the above functions, for example, the first fixing plate 81 may penetrate through the casing of the first motor 71, and a slide rail is disposed through the through groove, so that the first motor 71 can move up and down in the vertical direction; when the first motor 71 is activated, the second motor 72 is not activated, thereby keeping the first motor 71 stationary; when the first motor 71 finishes working and is closed, the second motor 72 is started to drive the first motor 71 to slide upwards, and the first screw 61 moves upwards along with the first motor 71 and is separated from the second screw 62;
the transverse pipe 1 is also communicated with a negative pressure pipe 10, the other end of the negative pressure pipe 10 is connected with a negative pressure forming device, the negative pressure forming device of the embodiment adopts an injector, the injector is connected with a connecting port 11 at the bottom of the negative pressure pipe 10, and a valve 12 and a pressure gauge 13 are arranged in the negative pressure pipe 10;
the working principle is as follows: after the open end A of the transverse pipe 1 and a central venous catheter to be emboldened are screwed, negative pressure is formed in the emboldener by using an injector, then the first motor 71 is started, the first screw 61 starts to rotate, the second screw 62 is driven by the first screw 61 to do leftward spiral motion, so that the conical drill bit 4 can drill into the thrombus, after the thrombus is drilled, the second motor 72 is started to drive the first motor 71 to move upwards, the first screw 61 also moves upwards due to the fact that the first motor 71 is fixed with the first screw 61, so that the first screw 61 is separated from the second screw 62, after the second screw 62 loses the meshing force of the first screw, the emboldener 3 rapidly returns under the tensile force of the tail spring 5, so that the thrombus is taken out of the catheter and enters the emboldener, the thrombus is gathered in the accommodating pipe 2, a switch can be arranged at the bottom of the accommodating pipe 2, and the thrombus and blood which are taken out are convenient to discharge.
Because the thrombus in the pipe is taken out in the twinkling of an eye, violently the negative pressure in 1 pipe can suck patient's blood and get into and hold pipe 2, and the thrombus in the guarantee pipe does not drop toward the internal direction of patient to avoid the emergence of thromboembolism.
Of course, the above-mentioned driving mechanism and lifting mechanism are only one aspect of the present embodiment, and all the existing structures that can realize these two movements: firstly, transversely move left promptly along the axial of violently managing, the purpose makes the bolt taking pole stretch out left violently the pipe and bores into the thrombus, secondly: the bolt withdrawing rod moves upwards along the radial direction, namely the vertical direction of the transverse pipe, so that the two screw rods are mutually separated, and the bolt withdrawing rod retracts into the transverse pipe under the action of elasticity (contraction pulling force) to complete bolt withdrawing; all falling within the scope of protection of the present application. For example, the lifting mechanism may also directly adopt a boom which can vertically move up and down, and the boom may be fixedly connected to the first motor 71.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A negative pressure catheter thrombectomy device is characterized in that: the transverse pipe comprises a transverse pipe and an accommodating pipe, wherein one end of the transverse pipe is an open end, the other end of the transverse pipe is communicated and sealed with the accommodating pipe, a bolt taking rod is arranged in the transverse pipe, a conical drill bit is arranged at one end of the bolt taking rod, the other end of the bolt taking rod is connected with the inner wall of the tail end of the transverse pipe through an elastic piece, one end of the bolt taking rod, which is provided with the conical drill bit, extends out of the open end of the transverse pipe, and the transverse pipe further comprises a driving mechanism for driving the bolt taking rod to perform spiral motion along the axial direction of the transverse pipe and a lifting mechanism for lifting the driving mechanism; the transverse pipe is also communicated with a negative pressure pipe, and the other end of the negative pressure pipe is connected with a negative pressure forming device.
2. The negative pressure catheter embolectomy device of claim 1, wherein: the bolt taking rod is a steel wire.
3. The negative pressure catheter embolectomy device of claim 1, wherein: the surface of the conical drill bit is provided with a spiral convex line.
4. The negative pressure catheter embolectomy device of claim 1, wherein: the conical drill bit is hollow.
5. The negative pressure catheter embolectomy device of claim 1, wherein: the elastic piece is a spring.
6. The negative pressure catheter embolectomy device of claim 1, wherein: the negative pressure forming device is a negative pressure aspirator.
7. The negative pressure catheter embolectomy device of claim 1, wherein: the negative pressure forming device is an injector, and a valve is arranged on the negative pressure pipe.
8. The negative pressure catheter embolectomy device of claim 1, wherein: the negative pressure pipe is also connected with a pressure gauge.
9. The negative pressure catheter embolectomy device of claim 1, wherein: the open end of the transverse pipe is provided with threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021860961.7U CN213189934U (en) | 2020-08-31 | 2020-08-31 | Negative pressure catheter thrombus taking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021860961.7U CN213189934U (en) | 2020-08-31 | 2020-08-31 | Negative pressure catheter thrombus taking device |
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| Publication Number | Publication Date |
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| CN213189934U true CN213189934U (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021860961.7U Active CN213189934U (en) | 2020-08-31 | 2020-08-31 | Negative pressure catheter thrombus taking device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262016A (en) * | 2021-06-03 | 2021-08-17 | 皖南医学院第一附属医院（皖南医学院弋矶山医院） | A multi-functional calculus fragmentation ablation device for urological department |
-
2020
- 2020-08-31 CN CN202021860961.7U patent/CN213189934U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262016A (en) * | 2021-06-03 | 2021-08-17 | 皖南医学院第一附属医院（皖南医学院弋矶山医院） | A multi-functional calculus fragmentation ablation device for urological department |
| CN113262016B (en) * | 2021-06-03 | 2022-04-08 | 皖南医学院第一附属医院（皖南医学院弋矶山医院） | Calculus smashing and melting device for urology department |
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