CN211067081U

CN211067081U - Micro-needle positioning embolectomy instrument

Info

Publication number: CN211067081U
Application number: CN201921852824.6U
Authority: CN
Inventors: 徐嘉开
Original assignee: Jilin Rulin Technology Co ltd
Current assignee: Jilin Rulin Technology Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-07-24
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses a micro-needle positioning embolectomy instrument, which comprises a felting needle and an embolectomy device, wherein the felting needle is arranged at the front end of the embolectomy device, the rear end of the thrombus taking device is connected with a conduit, the outside of the rear end of the conduit is sleeved with a connector, an expansion limiting device is added in an expansion sleeve of the microneedle positioning thrombus taking device, the novel expansion limiting device can limit the expansion size of the expansion sleeve after ventilation and pressurization, so that the expansion sleeve can only be contracted and expanded within a safe expansion fixed value, therefore, the expansion sleeve can safely bring out thrombus after being pressed and expanded in the blood vessel, the expansion limiting device can prevent the expansion sleeve from being excessively expanded after being pressed, therefore, the expansion sleeve which is expanded excessively can be prevented from completely blocking the blood vessel and propping and cracking the blood vessel to damage the blood vessel, and the expanded expansion sleeve can be ensured to safely discharge thrombus from the blood vessel without excessively influencing the normal circulation of blood in the blood vessel.

Description

Micro-needle positioning embolectomy instrument

Technical Field

The utility model belongs to the technical field of get and tie the appearance and be correlated with, concretely relates to micropin location appearance of getting ties.

Background

The thrombus is a small block formed on the surface of the blood flow at the stripping or repairing position in the blood vessel of the cardiovascular system, in the variable fluid dependence type, the thrombus is composed of insoluble fibrin, deposited platelets, accumulated white blood cells and entrapped red blood cells, and the thrombus removal is a new subject which is rapidly developed in recent years and integrates image diagnosis and clinical treatment, and is a general name of a series of technologies for introducing specific instruments into a human pathological change part through a natural pore canal or a tiny wound of a human body for minimally invasive treatment by using a puncture needle, a catheter and other interventional devices under the guidance and monitoring of an image device such as a digital subtraction angiography machine, a CT (computed tomography), ultrasound, magnetic resonance and the like, wherein the whole interventional treatment is carried out under the guidance and monitoring of the image device, can accurately and directly reach the pathological change part without large wound, so that the thrombus has accurate and stable quality, Has the advantages of safety, high efficiency, wide application range, less complication and the like, and is the preferred treatment method for some diseases.

The patent document with the publication number of 208958254U discloses a micropin location thrombectomy appearance, including vacuum tank, preceding end and handle are connected respectively in vacuum tank both ends, the vacuum tank inboard is provided with vacuum tube and is connected with preceding end, the handle other end is connected with the suction pump, suction pump one side is provided with battery and suction pump and battery electric connection, suction pump opposite side swing joint has adjust knob, preceding end one end is connected with mount table and specifically is hollow structure, preceding end both sides all are provided with the mount. The utility model discloses a be connected damping spring between vacuum tank and preceding end, can carry out certain slowly-releasing to exerting pressure when puncturing subcutaneous tissue, reduce the extra damage that causes the human body when taking the bolt, barrier propterty is stronger to end both sides all set up the mount in the front, can help carry out the rigidity to preceding end, prevent to produce offset formation potential safety hazard when taking the bolt, but present micropin location thrombectomy appearance technique exists following problem: present micro needle location thrombectomy appearance is when taking a bolt operation through inflation formula thrombectomy ware to the thrombus of blood vessel inside, all be through the transport of pipe and the inflation cover inside on the thrombectomy ware is given its pressurized inflation to outside gas input, just so can make the inflation cover after the inflation take out thrombus in the blood vessel for safety, and because carry out gas transport through the pipe to the inflation cover and make its pressurization inflation, can make the difficult control of pressurization inflation precision to the inflation cover like this, cause the inflation cover to produce excessive inflation after being pressed easily, and the inflation cover that the inflation is excessive then can block up the blood vessel completely easily and prop up easily and split the damage blood vessel, will be unfavorable for the safe handling of whole micro needle location thrombectomy appearance like this.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a micropin location thrombectomy appearance to solve and to carry out gas transportation to the inflation cover through the pipe and make its pressurization inflation in the above-mentioned background art, can so make the difficult control of pressurization inflation precision to the inflation cover, cause the inflation cover to produce excessive inflation after the pressurized easily, and the excessive inflation cover of inflation then can block up the blood vessel completely easily and prop easily and split the problem that damages the blood vessel.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a micropin location thrombectomy appearance, includes felting needle and thrombectomy ware, the front end at thrombectomy ware is installed to the felting needle, thrombectomy ware's rear end is connected with the pipe, the connector has been cup jointed to the rear end outside of pipe, the rear end of connector is connected with the operation hand (hold), be provided with the switch on one side outer wall of operation hand (hold), the rear end of operation hand (hold) is connected with the external joint, be provided with the inflation cover on the thrombectomy ware, be provided with the shrink net that resets on the inflation cover circumference inner wall, the front end of inflation cover is provided with the connection piece, the rear end of inflation cover is provided with the adapter sleeve, shrink reset around the net both ends respectively with connection piece and adapter sleeve fixed connection, the connection piece passes through adhesive and felting needle fixed connection, the adapter sleeve passes through adhesive and pipe fixed connection, the inside seal, the utility model discloses a catheter, including pipe circumference, fixed cover, inflation limiting device, restriction stay cord, metal seal wire fixed cover and inflation cover, the front end of metal seal wire passes the fixed cover of seal wire and inflation cover and connects on the rear end outer wall of connection piece, the inflation limiting device has been cup jointed on the inside metal seal wire circumference outer wall of inflation cover, the outermost end of inflation limiting device connects on the inner wall of inflation cover, be provided with the restriction cover on the inflation limiting device, the restriction cover cup joints on the inside metal seal wire circumference outer wall of inflation cover, be provided with the connection paster on the circumference outer wall of restriction cover, be connected with the restriction stay cord on the connection paster, the other one end of restriction stay cord is connected on.

Preferably, the whole shape of operation hand (hold) is the cylinder, still be provided with anti-skidding line on the circumference outer wall of operation hand (hold), the inside of operation hand (hold) still is provided with the miniature air pump with the pipe intercommunication, miniature air pump is through operation hand (hold) internal power electric connection.

Preferably, the connecting piece and the connecting sleeve have the same cross-sectional shapes as the guide pipe, the connecting piece and the connecting sleeve are flush with the circumferential outer wall of the guide pipe, and the circumferential outer wall of the expansion sleeve is flush with the connecting piece, the connecting sleeve and the circumferential outer wall of the guide pipe when the expansion sleeve is in the contraction state.

Preferably, the cross sections of the metal guide wire and the catheter are both circular, and the diameter of the cross section of the metal guide wire is smaller than that of the inner wall of the circumference of the catheter.

Preferably, the limiting pull ropes are arranged in twelve numbers, twelve limiting pull ropes are identical in shape, size and structure, and two ends of the twelve limiting pull ropes are divided into three groups of four groups through connecting patches and are connected to the inner wall of the expansion sleeve and the circumferential outer wall of the limiting sleeve at equal intervals.

Preferably, the wall thickness of the limiting sleeve is zero millimeter and the length of the limiting sleeve is one third of the distance between the connecting piece and the opposite inner wall of the connecting sleeve.

Compared with the prior art, the utility model provides a micropin location thrombectomy appearance possesses following beneficial effect:

1. the utility model adds an expansion limiting device in the expansion sleeve of the micro-needle positioning embolectomy instrument, and the novel expansion limiting device is connected on the metal guide wire in the expansion sleeve through the limiting sleeve, the novel expansion limiting device can limit the expansion size of the expansion sleeve after ventilation and pressurization, so that the expansion sleeve can only be contracted and expanded within a safe expansion fixed value, therefore, the expansion sleeve can safely bring out thrombus after being pressed and expanded in the blood vessel, the expansion limiting device can prevent the expansion sleeve from being excessively expanded after being pressed, therefore, the situations that the blood vessel is completely blocked and is damaged by propping up by the expansion sleeve which is expanded excessively are prevented, and the expanded expansion sleeve can safely discharge thrombus from the blood vessel and can not excessively influence the normal circulation of blood in the blood vessel;

2. the specific limiting mode and principle of the novel expansion limiting device are as follows, the expansion limiting device is mainly characterized in that the limiting sleeve is fixed outside a metal guide wire in the expansion sleeve, then four limiting pull ropes which are arranged equidistantly are connected on the outer walls of the three circumferential points of the front, middle and rear ends of the limiting sleeve through connecting patches, and the other ends of the three groups of four limiting pull ropes are connected on the inner wall of the expansion sleeve through another group of connecting patches, so that the limiting pull ropes cannot play a role in limiting the pulling of the expansion sleeve when the expansion degree of the expansion sleeve is within a safe range after the expansion sleeve is pressurized and expanded through catheter gas transmission, and once the expansion degree of the expansion sleeve is too large, the limiting pull ropes can pull the inside of the expansion sleeve to prevent the expansion sleeve from being continuously pressurized and expanded through the connection of the connecting patches due to the problem of limiting pull rope length limitation, thereby achieving the, the expansion sleeve can only work within the expansion range of a safe fixed value, so that the situations that the blood vessel is completely blocked and damaged by the expansion sleeve which is excessively expanded are prevented.

Drawings

The accompanying drawings 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, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic view of an external plane structure of a microneedle positioning embolectomy instrument provided by the present invention;

fig. 2 is a schematic view of the internal plane structure of a microneedle positioning embolectomy instrument provided by the present invention;

fig. 3 is a schematic plan view of the expansion limiting device according to the present invention;

in the figure: 1. a needle; 2. a thrombus taking device; 3. a conduit; 4. a connector; 5. a switch; 6. operating a handle; 7. an outer joint; 8. connecting sheets; 9. an expansion sleeve; 10. an expansion limiting device; 11. contracting the reduction net; 12. connecting sleeves; 13. a guide wire fixing sleeve; 14. a metal guide wire; 15. a restraining pull rope; 16. connecting the patch; 17. and a limiting sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a micro-needle positioning embolectomy instrument comprises a puncture needle 1 and an embolectomy device 2, the puncture needle 1 is arranged at the front end of the embolectomy device 2, the rear end of the embolectomy device 2 is connected with a conduit 3, the cross-sectional shapes of a metal guide wire 14 and the conduit 3 are both circular, the cross-sectional diameter of the metal guide wire 14 is smaller than the diameter of the circumferential inner wall of the conduit 3, the conduit 3 with the wall of the metal guide wire 14 is thin, so that air can smoothly pass through the conduit 3 and be conveyed into an expansion sleeve 9 to expand the expansion sleeve when the expansion sleeve 9 is pressurized and expanded, thereby ensuring normal and safe embolectomy operation, a connector 4 is sleeved outside the rear end of the conduit 3, the rear end of the connector 4 is connected with an operation handle 6, a switch 5 is arranged on the outer wall of one side of the operation handle 6, the whole shape of the operation handle 6 is cylindrical, anti-slip threads are further arranged on the circumferential outer wall of the operation handle 6, a, the micro air pump is electrically connected through an internal power supply of the operation handle 6, a built-in battery in the operation handle 6 supplies power for the micro air pump in the operation handle after the switch 5 is opened, the micro air pump can transmit air and pressurize the expansion sleeve 9 on the embolectomy device 2 through the transmission of the conduit 3, so that the expansion sleeve 9 expands into an oval sphere after pressurization, and then the expanded expansion sleeve 9 can smoothly bring out thrombus in blood vessels, the rear end of the operation handle 6 is connected with an external connector 7, the embolectomy device 2 is provided with the expansion sleeve 9, the circumferential inner wall of the expansion sleeve 9 is provided with a contraction reset net 11, the front end of the expansion sleeve 9 is provided with a connecting sheet 8, the rear end of the expansion sleeve 9 is provided with a connecting sleeve 12, the front end and the rear end of the contraction reset net 11 are respectively fixedly connected with the connecting sheet 8 and the connecting sleeve 12, the connecting sheet 8 is fixedly connected with the puncture needle 1, the connecting sleeve 12 is fixedly connected with the catheter 3 through an adhesive, the cross sections of the connecting sheet 8 and the connecting sleeve 12 are the same as that of the catheter 3, the connecting sheet 8 and the connecting sleeve 12 are flush with the circumferential outer wall of the catheter 3, the circumferential outer wall of the expansion sleeve 9 is flush with the connecting sheet 8, the connecting sleeve 12 and the circumferential outer wall of the catheter 3 in a contraction state, the three are flush, so that the expansion sleeve 9 in the contraction state can be poured into a blood vessel of a patient without obstacles through the puncture needle 1, the condition that the blood vessel of the patient is damaged due to the existence of a protruding surface is prevented, a guide wire fixing sleeve 13 is arranged inside the circumference of the connecting sleeve 12, a metal guide wire 14 is arranged inside the circumference of the catheter 3, the foremost end of the metal guide wire 14 penetrates through the guide wire fixing sleeve 13 and the expansion sleeve 9 and is connected to the outer wall of the rear end of the connecting sheet, the outermost end of the expansion limiting means 10 is attached to the inner wall of the expansion shell 9.

A micro-needle positioning embolectomy instrument is characterized in that a limiting sleeve 17 is arranged on an expansion limiting device 10, the wall thickness of the limiting sleeve 17 is zero-point one millimeter, the length of the limiting sleeve 17 is one third of the distance between a connecting sheet 8 and the opposite inner wall of a connecting sleeve 12, the limiting range of a limiting pull rope 15 on an expansion sleeve 9 can be wider as the length of the limiting sleeve 17 is longer, the limiting sleeve 17 with the length of one third can limit the expansion degree of the expansion sleeve 9 and cannot influence the normal expansion and contraction of the expansion sleeve 9, so that the expansion and contraction stability of the expansion sleeve 9 is improved, the limiting sleeve 17 is sleeved on the circumferential outer wall of a metal guide wire 14 in the expansion sleeve 9, a connecting patch 16 is arranged on the circumferential outer wall of the limiting sleeve 17, the connecting patch 16 is connected with the limiting pull rope 15, the limiting pull ropes 15 are totally provided with twelve, and the shape, size and structure of twelve limiting pull ropes 15 are the same, the two ends of twelve limiting pull ropes 15 are divided into three groups of four and are equidistantly connected on the inner wall of the expansion sleeve 9 and the circumferential outer wall of the limiting sleeve 17 through connecting patches 16, the three groups of limiting pull ropes 15 can perform expansion limiting treatment on the expansion sleeve 9 from three points, so that the expansion degree of the expansion sleeve 9 can be limited, and one surface of the expansion sleeve 9 cannot be excessively expanded, so that the expansion stability of the expansion sleeve 9 is improved, the other end of the limiting pull rope 15 is connected on the inner wall of the expansion sleeve 9 through another connecting patch 16, when the expansion degree of the expansion sleeve 9 is within a safe range after the expansion sleeve 9 is inflated and pressurized through the catheter 3, the limiting pull rope 15 cannot play a role in limiting the expansion sleeve 9, and once the expansion degree of the expansion sleeve 9 is too large, the limiting pull rope 15 can be limited by the length of the limiting pull rope 15 through the connection of the connecting patches 16 to pull the inside of the expansion sleeve 9 to prevent the expansion, therefore, the purpose of limiting the expansion size of the expansion sleeve 9 is achieved, the expansion sleeve 9 can only work within the expansion range of a safe fixed value, and the situations that the expansion sleeve 9 which is expanded excessively completely blocks the blood vessel and the blood vessel is damaged by propping up the blood vessel are prevented.

The utility model discloses a theory of operation and use flow: the utility model discloses install the back, at first need shine the human heat distribution condition of disease through the assistance of infrared thermal imager when using, thereby find the blood vessel position that needs take out the thrombus according to thermal imaging, when accurate finding the blood vessel position that needs take out the thrombus, this moment the doctor need grasp operation hand (hold) 6 simultaneously and pierce the intravascular portion that corresponds the position through felting needle 1 accuracy to thrombectomy ware 2 of pipe 3 front end according to the assistance of infrared thermal imager, then accurate thrombus in passing the blood vessel of guide of thrombectomy ware 2 through pipe 3 and the inside metal seal wire 14 of pipe 3, after whole thrombectomy ware 2 all completely passes the thrombus, this moment the doctor need open switch 5 on the operation hand (hold) 6, make the inside built-in battery of operation hand (hold) supply power for its inside miniature air pump and use, and miniature air pump then can carry out gas transmission pressurization to inflation cover 9 on thrombectomy ware 2 through pipe 3's transport and carry out gas transmission pressurization When the expansion sleeve 9 is pulled outwards and the operation handle 6 is pulled to drive the expansion sleeve 9 to slowly move and push out in the blood vessel through the connection of the metal guide wire 14, so that the expanded expansion sleeve 9 can accurately clear the thrombus in the blood vessel, when the expanded expansion sleeve 9 exits from the blood vessel and needs to be subjected to next thrombus taking operation, the expansion sleeve 9 needs to be decompressed through the miniature air pump in the operation handle 6, so that the expansion sleeve 9 is reset and contracted to enable the outer wall of the expansion sleeve 9 to be in a state of being flush with the outer wall of the catheter 3, and the whole thrombus taking device 2 can conveniently and safely enter the blood vessel through the puncture needle 1 without obstacles, when the expansion sleeve 9 resets and contracts, the contraction reset net 11 on the inner wall of the expansion sleeve can drive the expansion sleeve 9 after expansion to contract and reset to an original contraction state, because the contraction reset net 11 is made of memory metal, the memory metal is made of plastic deformation in a certain temperature range, and the memory metal can restore the special metal material of the original macroscopic shape in another temperature range, so the contraction reset net 11 can drive the expansion sleeve 9 which is decompressed after expansion to reset, and the next clearing of the thrombus can be normally and rapidly carried out.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A micro-needle positioning embolectomy instrument comprises a puncture needle (1) and an embolectomy device (2), and is characterized in that: the puncture needle (1) is arranged at the front end of the thrombus taking device (2), the rear end of the thrombus taking device (2) is connected with a guide pipe (3), a connector (4) is sleeved outside the rear end of the guide pipe (3), the rear end of the connector (4) is connected with an operation handle (6), a switch (5) is arranged on the outer wall of one side of the operation handle (6), the rear end of the operation handle (6) is connected with an outer connector (7), an expansion sleeve (9) is arranged on the thrombus taking device (2), a contraction reset net (11) is arranged on the circumferential inner wall of the expansion sleeve (9), a connecting piece (8) is arranged at the front end of the expansion sleeve (9), a connecting sleeve (12) is arranged at the rear end of the expansion sleeve (9), the front end and the rear end of the contraction reset net (11) are respectively fixedly connected with the connecting piece (8) and the connecting sleeve (12), and the connecting piece (8) is fixedly connected with the puncture needle (, the connecting sleeve (12) is fixedly connected with the catheter (3) through an adhesive, a guide wire fixing sleeve (13) is arranged inside the circumference of the connecting sleeve (12), a metal guide wire (14) is arranged inside the circumference of the catheter (3), the foremost end of the metal guide wire (14) penetrates through the guide wire fixing sleeve (13) and the expansion sleeve (9) and is connected onto the outer wall of the rear end of the connecting sheet (8), an expansion limiting device (10) is sleeved on the outer wall of the circumference of the metal guide wire (14) inside the expansion sleeve (9), the outmost end of the expansion limiting device (10) is connected onto the inner wall of the expansion sleeve (9), a limiting sleeve (17) is arranged on the expansion limiting device (10), the limiting sleeve (17) is sleeved on the outer wall of the circumference of the metal guide wire (14) inside the expansion sleeve (9), and a connecting patch (16) is arranged on the outer wall of the circumference of the limiting sleeve, the connecting patch (16) is connected with a limiting pull rope (15), and the other end of the limiting pull rope (15) is connected to the inner wall of the expansion sleeve (9) through another connecting patch (16).

2. A microneedle positioning embolectomy instrument according to claim 1, wherein: the whole shape of operation hand (hold) (6) is the cylinder, still be provided with anti-skidding line on the circumference outer wall of operation hand (hold) (6), the inside of operation hand (hold) (6) still is provided with the miniature air pump with pipe (3) intercommunication, miniature air pump is through operation hand (hold) (6) internal power electric connection.

3. A microneedle positioning embolectomy instrument according to claim 1, wherein: the cross sectional shape of connection piece (8) and adapter sleeve (12) all is the same with the cross sectional shape of pipe (3), connection piece (8) and adapter sleeve (12) keep the parallel and level with the circumference outer wall of pipe (3), circumference outer wall and the circumference outer wall of connection piece (8), adapter sleeve (12) and pipe (3) keep the parallel and level when inflation cover (9) are in the shrink state.

4. A microneedle positioning embolectomy instrument according to claim 1, wherein: the cross sections of the metal guide wire (14) and the catheter (3) are both circular, and the diameter of the cross section of the metal guide wire (14) is smaller than that of the inner wall of the circumference of the catheter (3).

5. A microneedle positioning embolectomy instrument according to claim 1, wherein: twelve limiting pull ropes (15) are arranged, the shape, size and structural composition of twelve limiting pull ropes (15) are identical, and two ends of the twelve limiting pull ropes (15) are divided into three groups of four connecting patches (16) and connected to the inner wall of the expansion sleeve (9) and the circumferential outer wall of the limiting sleeve (17) at equal intervals.

6. A microneedle positioning embolectomy instrument according to claim 1, wherein: the wall thickness of the limiting sleeve (17) is zero one millimeter, and the length of the limiting sleeve (17) is one third of the distance between the connecting piece (8) and the opposite inner wall of the connecting sleeve (12).