CN211534770U - Spring device for electric coagulation embolism - Google Patents
Spring device for electric coagulation embolism Download PDFInfo
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- CN211534770U CN211534770U CN201921501137.XU CN201921501137U CN211534770U CN 211534770 U CN211534770 U CN 211534770U CN 201921501137 U CN201921501137 U CN 201921501137U CN 211534770 U CN211534770 U CN 211534770U
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Abstract
The utility model relates to an electricity congeals thromboembolism spring assembly relates to medical instrument technical field, and it is used for solving spring coil propelling movement difficulty, the fibre hair that exists among the prior art and easily drops, embolism incomplete technical problem. The utility model discloses an electricity congeals thromboembolism spring assembly, including pipe and spring coil, when the spring coil is located the pipe outside, thereby to the spring coil circular telegram make the spring coil form the thrombus at pathological change position, consequently eliminated the coagulation of fibre hair and intraductal blood and the push resistance that forms on the one hand, make the spring coil more easily by the propelling movement to pathological change position, on the other hand has avoided fibre hair to drop at the propelling movement in-process and the phenomenon that non-pathological change position formed the embolism. Also, when the coil is positioned outside the catheter, the coil is helical in shape, which facilitates anchoring in the body and reduces displacement, thereby completing embolization to reduce the number of embolizations.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to an electric coagulation embolism spring assembly.
Background
Embolism treatment is an important technology in minimally invasive interventional therapy and also one of three major technologies of interventional radiology, and has been applied to treatment of tumors in multiple parts of the whole body, such as Transcatheter Arterial Chemoembolization (TACE) and Uterine Arterial Embolization (UAE). The embolization device is a necessary medical appliance in embolization treatment, and is used for embolizing tumor blood vessels and promoting ischemia and necrosis of tumors. The most ideal embolizing agent can fill vascular lumens with different diameters, and has long degradation time and good controllability. Various embolic agents on the market at present have advantages and disadvantages, and no universal optimal product exists. Common embolization products include spring rings, gelatin sponges, PVA (polyvinyl alcohol), sodium alginate microspheres, NBCA, degradable starch microspheres, alcohol, super-liquefied iodized oil, autologous blood clots, and the like.
Compared with other embolisms, the spring coil embolisms have the advantages of easiness in control, accurate positioning, no possibility of flowing to other parts along with blood, no possibility of mistaken embolism, capability of quickly embolizing thicker blood vessels and the like, and the advantages are not possessed by granular embolization substances, so that the spring coil embolisms are widely applied. Common spring embolism ware on the market at present adopts the fibre hair centre gripping with the macromolecular material in the spring mostly, utilizes the blood coagulation effect of fibre hair to form the thrombus, and the production technology of this type of spring coil is complicated, man-hour is longer, and fibre hair has the risk that drops in vivo.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electricity congeals thromboembolism spring assembly, its technical problem that is arranged in the spring coil processing difficulty and the fibre hair that exists among the solution prior art easily drops.
The utility model provides an electricity congeals thromboembolism spring assembly, include:
a conduit;
a coil, the catheter being adapted to load and deliver the coil to a lesion, the coil being configured to assume a spatial helical configuration outside the catheter when at least a portion of the coil is pushed out of the catheter;
a guide wire for delivering current to the spring coil, the guide wire connected to the spring coil by a connector; and
and the positive electrode of the power supply device is connected with the guide wire, and the negative electrode of the power supply device is connected with a human body to form a current loop.
In one embodiment, the connector comprises a first connector body connected to an end of the coil and a second connector body connected to an end of the guidewire;
when the connector is positioned in the catheter, the first connecting body and the second connecting body form clamping connection; after the connector is extended out of the catheter, the first connector and the second connector are disconnected from each other so that the spring ring is pushed out of the catheter.
In one embodiment, the connector is a fuse that automatically breaks when energized to allow the coil to be pushed out of the catheter.
In one embodiment, the spring coil is formed from a memory wire through a secondary winding.
In one embodiment, the wire is made of platinum tungsten alloy, stainless steel, or nickel titanium alloy.
In one embodiment, one end of the spring ring has a circular arc configuration.
In one embodiment, the guidewire is made of stainless steel, platinum or nickel titanium alloy.
In one embodiment, the catheter is made of a polymeric insulating material, and the inner and outer walls of the catheter are provided with a hydrophilic coating.
Compared with the prior art, the utility model has the advantages of: when the spring coil is located the pipe outside, thereby to the spring coil circular telegram make the spring coil form the thrombus at pathological change position, compare the blood coagulation effect through the fibre hair among the prior art and be used for forming the thrombus, the utility model discloses a spring coil owing to need not centre gripping fibre hair, has eliminated the coagulation of fibre hair and intraductal blood and the push resistance that forms on the one hand, makes the spring coil more easily by propelling movement to pathological change position, and on the other hand has avoided fibre hair to drop at the propelling movement in-process and the phenomenon of non-pathological change position formation embolism. Also, when the coil is positioned outside the catheter, the coil is helical in shape, which facilitates anchoring in the body and reduces displacement, thereby completing embolization to reduce the number of embolizations.
Drawings
The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the construction of an electro-coagulation embolic spring device in an embodiment of the present invention;
FIG. 2 is a schematic view of a coil of an embodiment of the present invention positioned outside of a catheter;
fig. 3 is a schematic diagram of an electrocoagulation plug spring device according to another embodiment of the present invention.
In the drawings, like components are denoted by like reference numerals. The figures are not drawn to scale.
Reference numerals:
1-a catheter; 2-a spring ring; 3-guide wire; 4-a connector; 41-a first linker; 42-a second linker; 5-power supply device.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1-3, the present invention provides an electro-coagulation embolization spring device, which comprises a catheter 1 and a coil spring 2, wherein the catheter 1 is used for loading and transporting the coil spring 2 to a lesion. Specifically, when the spring ring 2 is positioned in the catheter 1, the spring ring 1 is in a straight shape, and because the inner diameter of the catheter 1 is slightly larger than the outer diameter of the spring ring 2 in a straightened state, the spring ring 2 can be bound through the inner diameter of the catheter 1, so that the spring ring 2 has no extension space in the catheter 1 and can only passively be in a straightened state; the portion of the coil 2 outside the catheter 1 may be in a spatial helical configuration after at least a portion of the coil 2 has been pushed out of the catheter 1.
When the spring ring 2 is partially positioned outside the catheter 1, electricity is supplied to the spring ring 2, the charged spring ring 2 can attract negatively charged blood components (such as red blood cells, white blood cells, platelets and the like) to generate an electrocoagulation reaction, so that the spring ring 2 forms thrombus at a lesion site, and a doctor can observe the embolism effect through a developing device.
Therefore, the utility model discloses a spring coil 2 is through the electricity coagulation reaction come at pathological change department formation thrombus, compares among the prior art through the coagulation effect of fibre hair and forms the thrombus, the utility model discloses a spring coil 2 owing to need not centre gripping fibre hair, has eliminated the fibre hair and the intraductal blood's the propelling movement resistance that forms of condensing on the one hand, makes spring coil 2 more easily by propelling movement to pathological change position, and on the other hand has avoided fibre hair to drop at the propelling movement in-process and the phenomenon of non-pathological change position formation embolism. Therefore, the spring ring 2 of the utility model can solve the technical problems of difficult pushing, easy shedding of fiber wool and incomplete embolism of the prior spring ring.
Further, the utility model discloses an electricity congeals thromboembolism spring assembly still including being used for to the seal wire 3 of spring coil 2 transmission electric current, seal wire 3 passes through connector 4 and links to each other with spring coil 2.
In an alternative embodiment, the connector 4 is configured as an inverted structure, as illustrated in fig. 3. Specifically, the connector 4 comprises a first connecting body 41 connected to the end of the coil 2 and a second connecting body 42 connected to the end of the guide wire 3; when the connector 4 is located in the catheter 1, the first connecting body 41 and the second connecting body 42 form a snap connection, so that the guide wire 3 is connected with the spring ring 2, and the guide wire 3 can be electrified to the spring ring 2 through the first connecting body 41 and the second connecting body 42. At this time, also based on the constraint of the inner diameter of the catheter 1, the first connecting body 41 and the second connecting body 42 will not be separated from each other inside the catheter 1 (since the convex portion of the first connecting body 41 is just clamped to the concave portion of the second connecting body 42, they are mutually embedded and clamped under the constraint of the catheter 1, so as not to be separated from each other), as long as the first connecting body 41 and the second connecting body 42 are not separated, the spring ring 2 can be moved under the traction of the guide wire 3.
When the operator finds the desired position, the coil 2 is moved towards the distal exit of the catheter 1 by manipulating the proximal guidewire 3 so that it pushes the coil 2, the coil 2 being pushed partially out of the catheter 1, the pushed portion forming a spatial helix in its natural state due to the lack of restraint of the catheter 1. Thereafter, the guide wire 3 is continuously pushed in the catheter 1 in the above-mentioned direction until the connector 4 is pushed out of the catheter 1, at which time the first connecting body 41 and the second connecting body 42 are disengaged from each other without being bound by the catheter 1, so that the coil 2 is completely separated from the guide wire 3, and the coil 2 is anchored at the target position (lesion site) intended by the operator. The coil 2 after anchoring can play the role of blocking the target blood vessel.
It should be noted that the proximal end and the distal end refer to: when the operation is carried out, the surgical operation device is positioned outside a human body, one end close to the hand of the operator is a near end (outside), the surgical operation device is positioned inside the human body, and the other end far away from the hand of the operator is a far end (inside).
Further, the connector 4 is made of a metal material having good conductivity so as to smoothly supply electricity to the coil spring 2.
In an alternative embodiment, as shown in fig. 1, the connector 4 is a fuse. Specifically, the two ends of the fuse wire are respectively connected with the guide wire 3 and the spring ring 2, and when the fuse wire is electrified, the fuse wire can be automatically disconnected so that the spring ring 2 is separated from the guide wire 3 after being pushed out of the catheter 1.
In a specific embodiment, the spring coil 2 is formed from a memory wire by a double winding process. Specifically, the memory wire is first formed into a linear spring about the X-axis shown in fig. 2 (i.e., a one-shot forming process), and then the spring is formed into the coil spring 2 about the Z-axis (i.e., a two-shot forming process). If the coil 2 is expanded in the direction of the Z-axis, the shape of the straight coil 2 shown in fig. 1 and 3 will be obtained.
The metal wire is made of platinum-tungsten alloy, has good visibility and good conductivity, can be compatible with MRI (magnetic resonance imaging), and has the magnetic field intensity of 1.2T.
It will be appreciated that the wire may also be made of stainless steel or nitinol.
As shown in fig. 2, the coil 2 is shown in its natural state after it has been pushed out of the catheter 1. Since the coil 2 is defined by the catheter 1 inside the catheter 1, the coil 2 is actually provided in the catheter 1 in the form of a linear spring which returns to its twice-wound shape, i.e. in the form of a spiral, as shown in fig. 2, after the coil 2 has been pushed out of the catheter 1, so as to facilitate anchoring at the lesion site.
Further, if the coil 2 is not satisfactorily placed, the coil 2 may be pulled back into the catheter 1 to readjust the placement position and then released again, as long as the connector 4 is not disconnected.
As shown in figure 2, the coil 2 has a double-ended closed configuration, thereby allowing more complete embolization. Further, the end of the coil 2 is configured in a circular configuration, which can reduce the pushing resistance and prevent damage to the blood vessel.
In one embodiment, the guide wire 3 is made of a metal material with excellent electrical conductivity, such as stainless steel, platinum or nitinol, so as to be able to transmit a direct current to the coil 2.
Further, the utility model discloses an electricity congeals thromboembolism spring assembly still includes power supply unit 5, and power supply unit is used for providing safe high frequency dense wave pulse direct current. Specifically, the positive electrode of the power supply 5 is connected to the guide wire 3, and the negative electrode (not shown) of the power supply 5 is connected to the human body, thereby forming a current loop.
Further, the negative electrode of the power supply device 5 can be connected with the needle at the groin of the thigh of the human body to form a current loop.
In one embodiment, the power supply 5 may be a pulsed dc generator. Specifically, the current is 0.5-2 mA, the frequency is 50-100 times/second (Hz/Hz), and the single-time operation power-on time is 5-30 mins. Under the condition, a human body can feel slight trembling or slight stabbing pain, and severe injuries such as spasm, arrhythmia and the like can not be caused.
In one embodiment, the catheter 1 is used to guide the coil 2 into the body, and the catheter 1 is made of a polymer insulating material to prevent embolization of non-diseased areas after electrical conduction. Further, hydrophilic super-slip coatings are arranged on the inner wall and the outer wall of the catheter 1, so that the propulsion resistance can be reduced.
In addition, as shown in fig. 1, the distal end of the catheter 1 is rounded (the distal end of the coil 2 has a circular arc structure), so that the tube can be prevented from scratching the blood vessel.
The method of use of the electrocoagulation embolism spring device of the present invention is described in detail below.
Firstly, in an initial state, the spring coil 2 is linearly encapsulated inside the catheter 1 and is connected with the guide wire 3 through the connector 4 in the catheter 1;
next, after the catheter 1 is advanced into the target site in the body, the coil 2 is moved in the catheter 1 towards the distal exit port of the catheter 1 by pushing the guide wire 3 until it is pushed partially out of the catheter 1, while the connector 4 is kept inside the catheter 1, thereby creating a passage between the guide wire 3, the connector 4 and the coil 2.
Next, a power supply device 5 (specifically, a pulse dc generator) is used to energize the spring coil 2, when the PH of the blood is normal, the white blood cells, red blood cells, and fibrinogen have negative charges, and after the energization, electrophoresis is performed to move to the metal with positive charges, so as to generate electrocoagulation, and form thrombus at the lesion site. The doctor can observe the embolism effect through the developing device, after the spring ring 2 finishes the electro-coagulation embolism operation, the connector 4 is continuously moved inwards by pushing the guide wire 3 until the first connecting body 41 and the second connecting body 42 of the connector 4 are moved out of the catheter 1 and separated from each other, and after the spring ring 2 and the guide wire 3 are separated from each other, the target blood vessel position is blocked.
The operation when the connector 4 is a fuse is similar to the above-described operation except that the connector 4 (fuse) is disconnected by the energization operation to separate the coil spring 2 from the guide wire 3, which will not be described in detail.
To sum up, the utility model discloses a take place the electricity coagulation in order to attract the blood composition of taking the negative charge through making spring coil 2 electrified to forming the thrombus at pathological change position, abandoning the method that forms the thrombus through the blood coagulation effect of fibre hair among the prior art, can overcome because the spring coil propelling movement difficulty that the fibre hair brought among the prior art, fibre hair easily drops and embolism incomplete technical problem.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (8)
1. An electrocoagulation plug spring device, comprising:
a catheter (1);
a coil (2), the catheter (1) is used for loading and conveying the coil (2) to a lesion, when at least one part of the coil (2) is pushed out of the catheter (1), the part of the coil (2) outside the catheter (1) can be in a space spiral structure;
a guide wire (3) for delivering current to the spring ring (2), the guide wire (3) being connected to the spring ring (2) by a connector (4); and
the positive electrode of the power supply device (5) is connected with the guide wire (3), and the negative electrode of the power supply device (5) is connected with a human body to form a current loop.
2. An electrocoagulation plug spring device according to claim 1, wherein the connector (4) comprises a first connector (41) connected to the end of the spring coil (2) and a second connector (42) connected to the end of the guide wire (3);
wherein the first connector (41) and the second connector (42) form a snap connection when the connector (4) is positioned in the catheter (1); after the connector (4) is extended out of the catheter (1), the first connecting body (41) and the second connecting body (42) are disconnected from each other so that the spring ring (2) is pushed out of the catheter (1).
3. An electrocoagulation spring device according to claim 1, wherein the connector (4) is a fuse which is automatically broken upon energisation to allow the spring coil (2) to be pushed out of the catheter (1).
4. An electrocoagulation plug spring device according to any of claims 1-3, wherein the spring coil (2) is formed from a memory wire through a secondary winding.
5. An electrocoagulation plug spring device according to claim 4, wherein the wire is made of platinum tungsten alloy, stainless steel or nickel titanium alloy.
6. An electrocoagulation plug spring device according to claim 5, wherein one end of the spring ring (2) has a circular arc configuration.
7. An electrocoagulation plug spring device according to any of claims 1-3, wherein the guide wire (3) is made of stainless steel, platinum or nitinol.
8. An electrocoagulation plug spring device according to any of claims 1-3, characterized in that the catheter (1) is made of polymeric insulating material, the catheter (1) being provided with a hydrophilic coating on both the inner and outer walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921501137.XU CN211534770U (en) | 2019-09-10 | 2019-09-10 | Spring device for electric coagulation embolism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921501137.XU CN211534770U (en) | 2019-09-10 | 2019-09-10 | Spring device for electric coagulation embolism |
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| CN211534770U true CN211534770U (en) | 2020-09-22 |
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| CN201921501137.XU Active CN211534770U (en) | 2019-09-10 | 2019-09-10 | Spring device for electric coagulation embolism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115581491A (en) * | 2022-07-14 | 2023-01-10 | 北京爱霖医疗科技有限公司 | Fiber wool loading device, embolism-used fiber wool spring ring and preparation method thereof |
-
2019
- 2019-09-10 CN CN201921501137.XU patent/CN211534770U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115581491A (en) * | 2022-07-14 | 2023-01-10 | 北京爱霖医疗科技有限公司 | Fiber wool loading device, embolism-used fiber wool spring ring and preparation method thereof |
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Address after: 100094 101-1154, 1st floor, building 2, 103 Beiqing Road, Haidian District, Beijing Patentee after: Beijing Ailin Medical Technology Co.,Ltd. Address before: 101300 Room 501, building 13, yard 12, Juyuan Middle Road, Mapo Town, Shunyi District, Beijing Patentee before: BEIJING AILIN MEDICAL TECHNOLOGY Co.,Ltd. |