Traction device capable of preventing stent from falling off and used for liver interventional operation

Abstract

The invention relates to an anti-stent falling traction device for liver interventional operation, which belongs to the technical field of medical instruments and comprises an interventional puncture needle, an anti-falling guide wire, an inflatable support air bag, a telescopic stent, an electromagnetic anti-falling clamping head, an anti-falling limiting table, a telescopic limiting belt and a central control box. According to the invention, the anti-falling traction device with a front blocking anti-falling structure, a pull rope surrounding and fixing structure and an automatic retraction rope collecting structure is arranged, and the front blocking anti-falling structure is formed by arranging an electromagnetic anti-falling clamping head and an anti-falling limiting table, so that the support is prevented from falling; the four telescopic limiting belts are used for forming a pull rope surrounding structure to prevent the support from being opened in advance, the automatic retraction rope collecting structure is used, the telescopic limiting belts outside the support can be directly and remotely controlled to be rapidly retracted when the support reaches the target support installation position, and therefore the support can be smoothly opened at the target position to complete installation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a traction device for preventing stents from falling off used in liver intervention surgery. Background Art

[0002] Interventional liver therapy is a procedure that involves introducing special catheters, guidewires and other precision instruments into the human body under the guidance of medical imaging equipment to diagnose and locally treat some liver diseases. It includes a stent installation procedure that uses a catheter guidewire and puncture needle to open the hepatic vein and portal vein channels and place a stent in the channel for support.

[0003] In the prior art, when installing a stent during an interventional surgery, it is necessary to slowly insert a guide wire into a vein and adjust the position multiple times to finally make it slowly reach the target position of the stent to be installed. The balloon inside the stent is then inflated to expand the contracted stent, and then a fully expanded stent is formed and tightly fits in the channel. After the balloon is deflated and contracted, the guide wire retracts from the inside of the expanded stent and exits the channel to complete the stent installation.

[0004] At present, the guidewire structure in the prior art lacks a stent anti-dropping limiting structure used in conjunction with the stent, which causes the stent to loosen and fall off prematurely before reaching the target installation channel position due to multiple scratches and blood liquid resistance when the guidewire explores forward and backward multiple times to find the target channel position, thereby causing the stent to loosen and fall off prematurely during the interventional surgery. In addition, in order to prevent the stent from falling off prematurely, the speed of exploring and retracting to find the target installation channel is slowed down, which also slows down the progress of the surgery, prolongs the surgery time, and increases the possibility of surgical accidents. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a traction device for preventing stents from falling off for liver interventional surgery. By providing an anti-stent-from-falling traction device which has a front stop anti-falling structure, a pull rope surrounding fixing structure and an automatic retracting rope structure, the problem of the prior art that the stent falls off prematurely when the guide wire is inserted for multiple positioning during interventional surgery due to the lack of an anti-falling limiting structure for the stent, resulting in the failure of stent installation.

[0006] The present invention is achieved through the following technical solutions:

[0007] A traction device for preventing stents from falling off for liver intervention surgery comprises an interventional puncture needle, an anti-falling guide wire is arranged in the middle of the interventional puncture needle, an inflatable support airbag is fixedly arranged on the outer side of the top of the anti-falling guide wire, a telescopic bracket is arranged on the outer side of the inflatable support airbag, an electromagnetic anti-falling card joint is arranged at the front end of the telescopic bracket, an anti-falling limit platform is arranged at the rear end of the telescopic bracket, the electromagnetic anti-falling card joint and the anti-falling limit platform are connected by a telescopic limit belt, and a central control box for controlling the inflatable support airbag and the electromagnetic anti-falling card joint is fixedly arranged at the tail of the anti-falling guide wire.

[0008] Furthermore, the anti-falling guide wire is a thin tube with a hollow middle portion, and the inflatable support airbag, the electromagnetic anti-falling clamping joint and the anti-falling limit platform are all fixedly mounted on the outer wall of the thin tube.

[0009] Furthermore, the central control box includes a box body, an electric air pump and an electromagnetic adsorption block power supply are fixedly arranged inside the box body, and a charging and discharging switch for controlling the electric air pump and a power-on switch for controlling the electromagnetic adsorption block power supply are fixedly arranged outside the box body.

[0010] Furthermore, the inflatable support airbag is connected to the electric air pump through a micro air tube.

[0011] Furthermore, the electromagnetic anti-drop card connector includes a truncated cone-shaped card connector, a card interface is provided at the lower end of the card connector, an electromagnetic adsorption block is fixedly arranged in the card interface, and the electromagnetic adsorption block is connected to the electromagnetic adsorption block power supply through fine wires.

[0012] Furthermore, the anti-fall limit platform is an inverted frustum type limit platform, and a limit band passage opening is provided at the bottom of the inverted frustum type limit platform corresponding to the card interface, and a micro spring coil steel is fixedly arranged inside the inverted frustum type limit platform, the center of the micro spring coil steel is fixed, and the movable end of the micro spring coil steel is fixedly connected to the telescopic limit band, and the other end of the telescopic limit band is a magnetic connector.

[0013] Furthermore, the magnetic connector is adapted to the size of the card interface.

[0014] Furthermore, the inflatable support airbag is made of elastic material.

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides an anti-bracket falling-off traction device which is equipped with a front anti-falling structure, a rope surrounding fixing structure and an automatic retracting rope collecting structure. The front anti-falling structure is formed by providing an electromagnetic anti-falling clamping joint and an anti-falling limit platform, which helps prevent the bracket from falling off. The rope surrounding structure is formed by four telescopic limiting belts to prevent the bracket from being opened prematurely. The automatic retracting rope collecting structure is used to directly remotely control the telescopic limiting belt outside the bracket to be quickly retracted when the target bracket installation position is reached, which helps to smoothly open the bracket at the target position and complete the installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structure diagram of the assembly;

[0018] Figure 2 This is the front view of the overall structure;

[0019] Figure 3 To prevent the structure from falling off;

[0020] Figure 4 This is a cross-sectional view of the anti-falling structure;

[0021] Figure 5 It is a cross-sectional view of the electromagnetic anti-falling structure;

[0022] Figure 6 This is a cross-sectional view of the anti-fall limiter;

[0023] Figure 7 This is an enlarged view of the central control box;

[0024] Figure 8 This is a cross-sectional view of the central control box.

[0025] Description of reference numerals:

[0026] 1. Interventional puncture needle; 2. Anti-drop guide wire; 3. Inflatable support airbag; 4. Telescopic bracket; 5. Electromagnetic anti-drop card connector; 6. Anti-drop limit platform; 7. Telescopic limit belt; 8. Central control box; 9. Capillary; 10. Box body; 11. Electric air pump; 12. Electromagnetic adsorption block power supply; 13. Charge and discharge switch; 14. Power on switch; 15. Micro air tube; 16. Cone-shaped card connector; 17. Card interface; 18. Electromagnetic adsorption block; 19. Inverted cone-shaped limit platform; 20. Limit belt passage; 21. Micro spring coil steel; 22. Magnetic connector. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0032] like Figure 1-8 As shown, an embodiment of the present invention is: a traction device for preventing stent from falling off for liver intervention surgery, comprising an interventional puncture needle 1, an anti-falling guide wire 2 is arranged in the needle tube of the interventional puncture needle, an inflatable support airbag 3 is fixedly arranged on the outside of the top of the anti-falling guide wire, a telescopic bracket 4 is arranged on the outside of the inflatable support airbag, an electromagnetic anti-falling card joint 5 is arranged at the front end of the telescopic bracket, an anti-falling limit platform 6 is arranged at the rear end of the telescopic bracket, the electromagnetic anti-falling card joint and the anti-falling limit platform are connected by a telescopic limit belt 7, and a central control box 8 for controlling the inflatable support airbag and the electromagnetic anti-falling card joint is fixedly arranged at the tail of the anti-falling guide wire.

[0033] The anti-falling guide wire is a thin tube 9 with a hollow middle part. The inflatable support airbag, the electromagnetic anti-falling card connector and the anti-falling limit platform are all fixedly mounted on the outer wall of the thin tube. The central control box includes a box body 10. An electric air pump 11 and an electromagnetic adsorption block power supply 12 are fixedly arranged inside the box body. A charging and discharging switch 13 for controlling the electric air pump and a power-on switch 14 for controlling the electromagnetic adsorption block power supply are fixedly arranged outside the box body. The inflatable support airbag is connected to the electric air pump through a micro air tube 15. The electromagnetic anti-falling card connector includes a truncated cone card connector 16, a card interface 17 is provided at the lower end of the card connector, an electromagnetic adsorption block 18 is fixedly arranged in the card interface, and the electromagnetic adsorption block is connected to the electromagnetic adsorption block power supply through fine wires.

[0034] The anti-fall-off limit platform is a frustum-type limit platform 19, and a limit band passage 20 is provided at the bottom of the frustum-type limit platform corresponding to the card interface, and a micro spring coil 21 is fixedly arranged inside the frustum-type limit platform, the center of the micro spring coil is fixed, and the movable end of the micro spring coil is fixedly connected to the telescopic limit band, and the other end of the telescopic limit band is a magnetic connector 22.

[0035] When implementing this embodiment, first complete the assembly of the bracket before use, place the bracket between the electromagnetic anti-falling card connector and the anti-falling limit platform and retract and tighten the bracket, then pull out the telescopic limiting belt from the anti-falling limit platform and insert it into the corresponding card interface, then control the central control box to power the electromagnetic adsorption block, and then adsorb and fix the magnetic connector, thereby completing the limiting fixation of the telescopic bracket, then puncture the interventional puncture needle into the patient's blood vessel, and then insert the anti-falling guide wire into the human body along the needle tube of the interventional puncture needle, and after reaching the target position, press the power switch of the central control box to cut off the power supply of the electromagnetic adsorption block so that the electromagnetic adsorption block loses its magnetism, and the telescopic limiting belt retracts into the anti-falling limit platform under the action of the micro-spring coil steel, and then press the inflation and deflation switch to ventilate the micro-trachea so that the inflatable support airbag expands and drives the telescopic bracket to unfold, and finally makes the bracket completely fit the target tube wall, and then turns off the inflation and deflation switch to make the inflatable support airbag retract, and then pulls out the anti-falling guide wire and pulls out the interventional puncture needle to complete the operation.

[0036] The present embodiment provides an anti-bracket falling-off traction device which is equipped with a front anti-falling structure, a rope surrounding fixing structure and an automatic retracting and rope collecting structure. The front anti-falling structure is formed by providing an electromagnetic anti-falling clamp and an anti-falling limit platform, which helps prevent the bracket from falling off. Four telescopic limiting belts are used to form a rope surrounding structure to prevent the bracket from being opened prematurely. The automatic retracting and rope collecting structure helps to remotely control the telescopic limiting belt outside the bracket to be quickly retracted when the target bracket installation position is reached, which helps to smoothly open the bracket at the target position and complete the installation.

[0037] In this embodiment, the size of the magnetic connector is adapted to that of the card interface, which is conducive to the magnetic connector being able to be better inserted into the card interface and firmly fixed.

[0038] In this embodiment, the inflatable support airbag is made of elastic material, which is conducive to rapid rebound and restoration of the original shape after inflation, thereby facilitating rapid separation from the inner side of the stent.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A traction device for preventing stent from falling off for liver intervention surgery, characterized in that: It comprises an interventional puncture needle, wherein an anti-falling guide wire is arranged in the middle part, an inflatable support airbag is fixedly arranged on the outer side of the top of the anti-falling guide wire, a telescopic bracket is arranged on the outer side of the inflatable support airbag, an electromagnetic anti-falling card joint is arranged at the front end of the telescopic bracket, an anti-falling limit platform is arranged at the rear end of the telescopic bracket, the electromagnetic anti-falling card joint and the anti-falling limit platform are connected by a telescopic limit belt, and a central control box for controlling the inflatable support airbag and the electromagnetic anti-falling card joint is fixedly arranged at the tail of the anti-falling guide wire.

2. The traction device for preventing stent from falling off for liver intervention surgery according to claim 1, characterized in that: The anti-falling guide wire is a thin tube with a hollow middle portion, and the inflatable support airbag, the electromagnetic anti-falling clamping joint and the anti-falling limit platform are all fixedly sleeved on the outer wall of the thin tube.

3. The traction device for preventing stent from falling off for liver intervention surgery according to claim 2, characterized in that: The central control box includes a box body, an electric air pump and an electromagnetic adsorption block power supply are fixedly arranged inside the box body, and a charging and discharging switch for controlling the electric air pump and a power-on switch for controlling the electromagnetic adsorption block power supply are fixedly arranged outside the box body.

4. The traction device for preventing stent from falling off for liver intervention surgery according to claim 3, characterized in that: The inflatable support airbag is connected to the electric air pump through a micro air tube.

5. The traction device for preventing stent from falling off for liver intervention surgery according to claim 3, characterized in that: The electromagnetic anti-drop card connector comprises a truncated cone-shaped card connector, a card interface is provided at the lower end of the card connector, an electromagnetic adsorption block is fixedly arranged in the card interface, and the electromagnetic adsorption block is connected to the electromagnetic adsorption block power supply through fine wires.

6. The traction device for preventing stent from falling off used in liver intervention surgery according to claim 5, characterized in that: The anti-falling limit platform is an inverted frustum-type limit platform, and a limit band passage opening is provided at the bottom of the inverted frustum-type limit platform corresponding to the card interface, and a micro spring coil steel is fixedly arranged inside the inverted frustum-type limit platform, the center of the micro spring coil steel is fixed, and the movable end of the micro spring coil steel is fixedly connected to the telescopic limit band, and the other end of the telescopic limit band is a magnetic connector.

7. The traction device for preventing stent from falling off for liver intervention surgery according to claim 6, characterized in that :The magnetic connector is adapted to the size of the card interface.

8. The traction device for preventing stent from falling off for liver intervention surgery according to claim 1, characterized in that :The inflatable support airbag is made of elastic material.

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