CN210844899U - Device for assisting catheter in passing through blood vessel - Google Patents
Device for assisting catheter in passing through blood vessel Download PDFInfo
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- CN210844899U CN210844899U CN201921507209.1U CN201921507209U CN210844899U CN 210844899 U CN210844899 U CN 210844899U CN 201921507209 U CN201921507209 U CN 201921507209U CN 210844899 U CN210844899 U CN 210844899U
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- blood vessel
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Abstract
The utility model provides a device for assisting a catheter to pass through a blood vessel, which comprises a guide catheter, a balloon system and an inflating device; the balloon system comprises a balloon, a balloon tube and a joint; one end of the sacculus tube is connected with the sacculus, and the other end of the sacculus tube is connected with the joint; the balloon comprises a conical front end, a cylindrical head and a cylindrical tail which are connected in sequence; the diameter of the cylindrical tail part after being filled with gas is smaller than that of the cylindrical head part after being filled with gas, and a step is formed between the cylindrical head part and the cylindrical tail part; the inner diameter of the guide conduit is smaller than the diameter of the cylindrical head part after being filled with air; the inner diameter of the guide conduit is larger than or equal to the diameter of the cylindrical tail part after being filled with air; in the working state, the front end of the guide conduit can be propped against the step between the cylindrical head part and the cylindrical tail part. The utility model discloses a balloon system who sets up special shape with guide the pipe cooperation, can let guide the pipe and pass through stenosis or spasm blood vessel more easily, send to the intervention treatment position.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, in particular to auxiliary catheter passes through vascular device.
Background
Interventional techniques are numerous and can be broadly divided into vascular and non-vascular interventional techniques.
Referring to fig. 1, during the vascular intervention, the guiding catheter 1 is not easy to pass through the stenosis of the blood vessel 2 and cannot reach the lesion site due to vasospasm or stenosis.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a supplementary pipe passes through vascular device to solve and guide the technical problem that the pipe can't pass through vasospasm or narrow department, and can't reach the focus position.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a device for assisting in passing a catheter through a blood vessel comprises a guide catheter, a balloon system and an inflation device;
the balloon system comprises a balloon, a balloon tube and a joint; one end of the sacculus tube is connected with the sacculus, and the other end of the sacculus tube is connected with the joint; the balloon comprises a conical front end, a cylindrical head and a cylindrical tail which are connected in sequence; the diameter of the cylindrical tail part after being filled with gas is smaller than that of the cylindrical head part after being filled with gas, and a step is formed between the cylindrical head part and the cylindrical tail part;
the inner diameter of the guide conduit is smaller than the diameter of the cylindrical head part after being filled with air; the inner diameter of the guide conduit is larger than or equal to the diameter of the cylindrical tail part after being filled with air; when in working state, the front end of the guide conduit can be propped against the step between the cylindrical head part and the cylindrical tail part;
the inflation device is used for connecting the joint and can inflate the sacculus through the joint and the sacculus tube.
Furthermore, an internal thread interface is arranged on the joint; the inflating device is an injector; the injection end of the injector is provided with external threads which can be in threaded connection with the internal thread interface, so that the inflation channel is sealed; by pushing the injection rod of the injector, the gas in the injector can be injected into the saccule through the saccule tube, so that the saccule is inflated.
Furthermore, the joint is externally connected with a pressure gauge for monitoring the gas pressure in the saccule.
Further, the balloon tube includes a circular channel tube, and an indexing guide wire channel is formed in the circular channel tube.
Further, a valve threaded port is arranged on the joint and is communicated with an annular channel pipe of the balloon pipe; a valve is arranged in the valve threaded opening; the valve is in threaded fit with the threaded opening of the valve; the annular channel tube can be sealed by screwing the valve.
Furthermore, the annular channel pipe is connected with the joint and can inflate the balloon through the annular channel pipe; the sacculus cladding is fixed in sacculus pipe one end periphery department, is equipped with a plurality of gas pockets on the outer wall of annular channel pipe and sacculus junction.
Further, the balloon and the balloon tube are both made of plastic; the hardness of the material of the saccule is lower than that of the saccule tube.
Furthermore, the sacculus tube is provided with a depth mark.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model provides a supplementary pipe passes through vascular device, through the sacculus system that sets up special shape, intervenes the treatment in-process, leads to the difficult narrow department of blood vessel that passes through of pipe because of vasospasm or stenosis, lets the pipe pass through stenosis or spasm blood vessel more easily through this kind of device, sends the pipe to the intervention treatment position.
Furthermore, the balloon is soft, and the head is in a bird beak-like conical shape, so that blood vessels are not easily damaged.
Furthermore, a pressure injector is adopted to drive gas into the saccule, the valve is locked after the gas is driven into the saccule, and the pressure of the saccule is kept.
Furthermore, distance mark points are designed on the balloon rod, the balloon rod is sent to the mark points, and the head end of the balloon is just positioned at the opening part of the guide catheter.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a prior art schematic illustration of a finger catheter failing to navigate a vasospasm or stenosis;
FIG. 2 is a schematic view of the overall structure of a device for assisting in the passage of a catheter through a blood vessel according to the present invention;
FIG. 3 is a schematic view of the balloon in cooperation with a guiding catheter;
FIG. 4 is a schematic view of a balloon;
fig. 5 is a cross-sectional view of the balloon shaft and balloon connection.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.
Referring to fig. 2, the present invention provides a device for assisting a catheter to pass through a blood vessel, which comprises a guiding catheter 1, a balloon system 3, a guiding wire 4 and an injector 5.
The balloon system 3 includes a balloon 31, a balloon tube 32 and a joint 33. The balloon tube 32 is connected to the balloon 31 at one end and to the connector 33 at the other end.
The connector 33 is provided with an internally threaded interface 330 and a valve 34 therein. The injection end 51 of the injector 5 is provided with an external thread which can be connected with the internal thread interface 330 in a threaded manner, so that the inflation channel is sealed, and air in the injector can be injected into the balloon 31 through the balloon tube 32 by pushing the injection rod of the injector 5, so that the balloon 31 is inflated. The connector 33 is externally connected with a pressure gauge, and when the inflation pressure reaches a set pressure, the valve 34 is rotated to seal the inflation channel of the balloon tube 32, so that the balloon 31 is maintained in an inflated state.
The balloon 31 includes a tapered front end 310, a cylindrical head 311, and a cylindrical tail 312 connected in series. The diameter of the cylindrical tail 312 after being filled with gas is smaller than that of the cylindrical head 311 after being filled with gas, and a step is formed between the cylindrical head 311 and the cylindrical tail 312.
The inner diameter of the guide catheter 1 is smaller than the diameter of the cylindrical head 311 after filling with air; the inner diameter of the guide catheter 1 is equal to or larger than the diameter of the cylindrical tail part 312 after being filled with air; thus, the front end of the guide catheter 1 can be propped against the step between the cylindrical head 311 and the cylindrical tail 312, so that after the cylindrical head 311 is inflated to expand the blood vessel, the guide catheter 1 can be propped against the balloon 31 and the balloon 31 to move forwards smoothly until reaching the focus.
Referring to fig. 3 to 5, the balloon 31, the balloon tube 32 and the joint 33 are made of plastic, and the balloon 31 is made of a softer material than the balloon tube 32. The balloon tube 32 includes a circular channel tube 322 with an indexing guide wire channel 321 formed within the circular channel tube 322. The guide wire channel 321 is spaced from the annular channel tube 322 and allows the guide wire 4 to pass through without affecting balloon deflation. The annular passage tube 322 is connected to the joint 33, and the balloon 31 can be inflated by inflating the annular passage tube 322 into the balloon 31. The balloon 31 is fixed at the periphery of one end of the balloon tube 32 in a wrapping manner, a plurality of air holes 320 are formed in the outer wall of the joint of the annular channel tube 322 and the balloon 31, and air filled in the annular channel tube 322 can enter the balloon 31 through the through holes to enable the balloon to be inflated. The guide wire channel 321 is thicker to accommodate all sizes of guide wires 4 without exchanging the guide wires.
The balloon tube 32 is provided with a depth mark for an operator to judge the position of the balloon 31.
When the device for assisting the catheter to pass through the blood vessel is used, the guide wire 4 is firstly sent to the proximal end along the blood vessel, the guide catheter 1 is sent along the guide wire 4, and the blunt end of the guide catheter 2 can not pass through the narrow or spasm of the blood vessel 2; the balloon system 3 is sent to the mark position along the guide wire; the cylindrical head 311 of the balloon 31 just protrudes beyond the end of the guide catheter 1; connecting the injector 5 and the connector 33, opening the valve 34, pushing the injection rod of the injector 5, injecting air in the injector into the balloon 31 through the balloon tube 32, and inflating and expanding the balloon 31; when the reading of the pressure gauge externally connected to the connector 33 reaches the set pressure, the valve 34 is rotated to seal the inflation channel of the balloon tube 32, and the inflation is stopped, so that the balloon 31 is kept in an inflated state to open the vascular stenosis. The guide catheter 1 and the balloon system 3 are continuously and synchronously sent, the guide wire is guided to pass through the narrow part of the blood vessel, then the valve 34 is opened, the air in the balloon 31 is pumped out through the injector 5, the balloon 31 is contracted, and the balloon 31 is withdrawn. The guiding catheter 1 is sent to the coronary artery opening continuously, and the guiding guide wire 4 is withdrawn. If the vessel has a plurality of stenoses and the guide catheter can not pass through the stenoses directly, the balloon is deflated and the guide catheter is synchronously advanced to the next stenoses of the vessel for re-inflation to pass through, and the steps are repeated until the guide catheter reaches the opening of the coronary artery.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (8)
1. A device for assisting in the passage of a catheter through a blood vessel, comprising a guiding catheter (1), a balloon system (3) and an inflation device;
the balloon system (3) comprises a balloon (31), a balloon tube (32) and a joint (33); one end of the sacculus tube (32) is connected with the sacculus (31), and the other end is connected with the joint (33); the balloon (31) comprises a conical front end (310), a cylindrical head (311) and a cylindrical tail (312) which are connected in sequence; the diameter of the cylindrical tail part (312) after being filled with gas is smaller than that of the cylindrical head part (311) after being filled with gas, and a step is formed between the cylindrical head part (311) and the cylindrical tail part (312);
the inner diameter of the guide catheter (1) is smaller than the diameter of the cylindrical head (311) after being filled with air; the inner diameter of the guide catheter (1) is larger than or equal to the diameter of the cylindrical tail part (312) after being filled with air; in the working state, the front end of the guide catheter (1) can be propped against the step between the cylindrical head part (311) and the cylindrical tail part (312);
the inflation device is used for connecting a joint (33), and the balloon (31) can be inflated through the joint (33) and the balloon tube (32).
2. The device for assisting in the passage of a catheter through a blood vessel of claim 1, wherein the connector (33) is provided with an internally threaded hub (330); the inflating device is an injector (5); the injection end (51) of the injector (5) is provided with external threads and can be in threaded connection with the internal thread interface (330) so that the inflation channel is sealed; by pushing the injection rod of the injector (5), the gas in the injector can be injected into the balloon (31) through the balloon tube (32), so that the balloon (31) is inflated.
3. A device for assisting in the passage of a catheter through a blood vessel as claimed in claim 2, wherein the connector (33) is externally connected to a pressure gauge for monitoring the pressure of the gas in the balloon (31).
4. The device for assisting in the passage of a catheter through a blood vessel of claim 2, wherein the balloon tube (32) includes a circumferential channel tube (322), the circumferential channel tube (322) defining a guide wire channel (321) therein.
5. A device for assisting in the passage of a catheter through a blood vessel as claimed in claim 4, wherein the connector (33) is provided with a valve screw port communicating with the annular passage tube (322) of the balloon tube (32); a valve (34) is arranged in the valve threaded opening; the valve (34) is in threaded fit with the valve threaded port; the annular channel tube (322) can be sealed by screwing the valve (34).
6. A device for assisting in the passage of a catheter through a blood vessel according to claim 4, characterised in that the annular passage tube (322) is connected to the connector (33) and can be inflated into the balloon (31) through the annular passage tube (322); the sacculus (31) is fixed at the periphery of one end of the sacculus pipe (32) in a wrapping mode, and a plurality of air holes (320) are formed in the outer wall of the joint of the annular channel pipe (322) and the sacculus (31).
7. A device for assisting in the passage of a catheter through a blood vessel according to claim 1, characterised in that the balloon (31) and the balloon tube (32) are both made of plastic; the hardness of the balloon (31) is lower than that of the balloon tube (32).
8. The device of claim 1, wherein the balloon catheter (32) is provided with depth markings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921507209.1U CN210844899U (en) | 2019-09-10 | 2019-09-10 | Device for assisting catheter in passing through blood vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921507209.1U CN210844899U (en) | 2019-09-10 | 2019-09-10 | Device for assisting catheter in passing through blood vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210844899U true CN210844899U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921507209.1U Active CN210844899U (en) | 2019-09-10 | 2019-09-10 | Device for assisting catheter in passing through blood vessel |
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| CN (1) | CN210844899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116271444A (en) * | 2022-11-25 | 2023-06-23 | 广州易介医疗科技有限公司 | Balloon type auxiliary catheter and use method thereof |
-
2019
- 2019-09-10 CN CN201921507209.1U patent/CN210844899U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116271444A (en) * | 2022-11-25 | 2023-06-23 | 广州易介医疗科技有限公司 | Balloon type auxiliary catheter and use method thereof |
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