Guide wire and femoral artery occluder

Abstract

The utility model discloses a guide wire and a femoral artery plugging device, which belong to the field of medical instruments and comprise a guide wire, a handle and a tampon conveying component. The tampon conveying assembly comprises an outer tube, a pushing rod and a conveying catheter; a first driving assembly and a second driving assembly are arranged in the handle, and the first driving assembly is used for driving the guide wire to move towards the far end of the outer tube till the guide wire stretches out of the conveying catheter and releases the opening type annular structure. The opening type annular structure is perpendicular to the main body section, and the intersection point of the opening type annular structure and the main body section is located at the outer edge of the opening type annular structure; according to the femoral artery plugging device, the guide wire with the opening type annular structure is adopted, after the guide wire is released, compared with an existing spiral structure, generated elastic potential energy is small, impact on the blood vessel wall is smaller, in addition, occupied space and height are smaller, blood vessels are not prone to being damaged, and the femoral artery plugging device is safer.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, in particular to a guide wire and femoral artery occluder. BACKGROUND

[0002] Femoral artery bleeding cannot be naturally stopped under normal circumstances, and needs to be stopped by external facilities. The existing technology mainly presses manually for 10-15 minutes or even longer time, or uses the way of pressing the skin outside the puncture hole to close the puncture. The treatment process consumes a lot of time of doctors and patients, and is inconvenient.

[0003] The existing patent CN202410013776 discloses a blood vessel occlusion and hemostasis device. In the process of pushing out the guide wire, the straight section at the end of the guide wire becomes a spiral structure to position and occlude. The deformation amount from straight section to spiral shape is large, the elastic potential energy is also large, the impact on the blood vessel wall is large, the spiral structure occupies a higher height in the blood vessel, and the blood vessel is easily damaged. Therefore, a guide wire and femoral artery occluder need to be designed. UTILITY MODEL CONTENT

[0004] The utility model provides a guide wire and femoral artery occluder, which can at least solve one problem in the background art.

[0005] A guide wire comprises a main body section and an open ring structure, the open ring structure is perpendicular to the main body section, and the intersection of the open ring structure and the main body section is located at the outer edge of the open ring structure.

[0006] Preferably, the curvature of the open ring structure is 300-320 degrees.

[0007] Preferably, the diameter of the open ring structure is 4-4.5 mm.

[0008] A femoral artery occluder comprises a guide wire, a handle and a hemostatic plug delivery assembly.

[0009] The hemostatic plug delivery assembly comprises an outer tube, a push rod and a delivery catheter.

[0010] The push rod and the delivery catheter are located in the outer tube, and the guide wire is located in the delivery catheter.

[0011] The distal end of the push rod is connected with a push block for contacting the hemostatic plug, and the push block has a clearance slot capable of accommodating the delivery catheter.

[0012] The handle is internally provided with a driving assembly one and a driving assembly two, wherein the driving assembly one is used to drive the guide wire to move towards the distal end of the outer tube until the guide wire extends out of the delivery catheter and releases the open ring structure; the driving assembly two is used to drive the guide wire and the outer tube to move towards the handle until the open ring structure is withdrawn into the delivery catheter.

[0013] Preferably, the driving assembly one comprises a safety button, a transmission assembly and a guide wire connecting piece.

[0014] The guide wire connecting piece is connected with the guide wire.

[0015] The transmission assembly can transmit the displacement of the safety button to the guide wire connecting piece, so that the guide wire connecting piece moves towards the distal end of the outer tube.

[0016] Preferably, the transmission assembly comprises:

[0017] A rack plate one located on the movement path of the safety button;

[0018] A rack plate two connected with the guide wire connecting piece; and

[0019] Coaxially arranged gear one and gear two, the rack plate one is engagedly connected with the gear one, and the rack plate two is engagedly connected with the gear two.

[0020] The safety button is connected with a connecting rod, after the safety button is pressed, the connecting rod can abut against the rack plate one and drive the gear one and the gear two to synchronously rotate.

[0021] The driving assembly two comprises a firing button, a sliding piece and a blood return indication block.

[0022] The firing button is connected with a half gear, and the sliding piece is fixedly connected with a rack plate three engagedly connected with the half gear.

[0023] The blood return indication block is connected to the sliding piece, and a through slot matched with the outer tube is formed in the blood return indication block, the outer tube is fixed in the through slot, and the delivery catheter is fixedly connected to the inner wall of the outer tube.

[0024] The gear one and the gear two are rotationally installed on the sliding piece, and the rack plate two and the guide wire connecting piece are slidingly arranged on the sliding piece.

[0025] Preferably, the handle is further provided with an indication piece, a transparent indication window fixed in the handle is arranged above the indication piece, an indication mark one is arranged on the upper side of the indication piece, and an indication mark two is arranged on the lower side of the transparent indication window.

[0026] The indication piece is fixedly connected with the guide wire, at least two color blocks distributed along the length direction of the guide wire are arranged on the indication mark one, and the indication mark two can cover at least one color block.

[0027] Compared with the prior art, the femoral artery occluder has the following beneficial effects: the guide wire with the open ring structure is adopted, after release, compared with the existing spiral structure, the elastic potential energy generated is small, the impact on the blood vessel wall is smaller, in addition, the space and height occupied are smaller, the blood vessel is not easy to be damaged, and it is safer. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structure diagram of the guide wire;

[0029] Figure 2 is a structure diagram of the distal end of the guide wire;

[0030] Figure 3 is a structure diagram of the femoral artery occluder;

[0031] Figure 4 is a structure diagram of the hemostatic plug delivery assembly;

[0032] Figure 5 is a partial sectional view of the hemostatic plug delivery assembly;

[0033] Figure 6 is a partial sectional view of the femoral artery occluder;

[0034] Figure 7 is a structure diagram of the internal structure of the femoral artery occluder from one perspective;

[0035] Figure 8 is a structure diagram of the internal structure of the femoral artery occluder from another perspective;

[0036] Figure 9 is a partial sectional view of the backflow indicating block.

[0037] BRIEF DESCRIPTION OF DRAWINGS

[0038] 1-guide wire, 2-main body segment, 3-open ring structure, 4-handle, 5-outer tube, 6-pushing rod, 61-pushing block, 7-delivery catheter, 8-hemostatic plug, 9-safety button, 10-guide wire connecting piece, 11-gear one, 12-gear two, 13-rack plate one, 14-rack plate two, 15-connecting rod, 16-firing button, 17-sliding piece, 18-backflow indicating block, 19-rack plate three, 20-limiting portion, 21-indicating piece, 22-transparent indicating window, 23-half gear. DETAILED DESCRIPTION

[0039] One specific embodiment of the utility model will be described in detail below in combination with the drawings, but it should be understood that the protection scope of the utility model is not limited by the specific embodiment.

[0040] Example one

[0041] As Figures 1 to 2 shown, the utility model discloses a guide wire, guide wire 1 including main body section 2 and open type ring structure 3, open type ring structure 3 adopts heat treatment forming, open type ring structure 3 is perpendicular to main body section 2, and the intersection of open type ring structure 3 and main body section 2 is located at the outer edge of open type ring structure 3, when open type ring structure 3 is released by straight line as ring-like structure, its deformation amount is lower than the existing spiral structure, and the elastic potential energy produced is small, and the impact on the blood vessel wall is smaller, in addition, the space and height occupied are smaller, and the blood vessel is not easy to damage, and it is safer;

[0042] In other some embodiments, the outer diameter of the open type ring structure gradually decreases, so as to further reduce the occupied space and the impact force when releasing;

[0043] The material of the guide wire 1 is nickel-titanium alloy or cobalt-chromium alloy, and has a memory function;

[0044] The diameter of the open type ring structure 3 is designed to be 4mm-4.5mm, and the radian is 300°-320°, so as to be hung on the blood vessel wall;

[0045] In addition, the end of the open type ring structure 3 is in the form of a spherical cap, so as to further reduce the damage to the blood vessel.

[0046] Embodiment two

[0047] As Figures 1 to 9 shown, the utility model discloses a femoral artery occluder, including the guide wire 1 of embodiment one, still include handle 4 and hemostatic plug 8 delivery assembly;

[0048] Among them, hemostatic plug 8 delivery assembly includes hemostatic plug 8, outer tube 5, push rod 6 and delivery catheter 7;

[0049] Hemostatic plug 8, push rod 6 and delivery catheter 7 are all located in outer tube 5, and guide wire 1 is located in delivery catheter 7;

[0050] In order to reduce the contact of hemostatic plug 8 and metal material, the distal end of push rod 6 is connected with push block 61 for contacting hemostatic plug 8, and push block 61 has a displacement slot capable of accommodating delivery catheter 7;

[0051] The material of hemostatic plug 8 of the embodiment is one of polyglycolic acid, polylactic acid or a mixture of the two, in addition, hemostatic plug 8 is heated for 5-20min in the environment of 120℃-180℃ to be shaped;

[0052] The material of outer tube 5 of the embodiment is PI or PEEK;

[0053] To realize the plugging and positioning of the guide wire 1 and the plugging of the tourniquet 8, the handle 4 of the embodiment is provided with a driving assembly one and a driving assembly two, wherein the driving assembly one is used to drive the guide wire 1 to move towards the distal end of the outer tube 5 until the guide wire 1 extends out of the delivery catheter 7 and releases the open ring structure 3; the driving assembly two is used to drive the guide wire 1 and the outer tube 5 to move towards the handle 4 until the open ring structure 3 is withdrawn into the delivery catheter 7 and the tourniquet 8 is pushed out of the outer tube 5;

[0054] Specifically, the driving assembly one of the embodiment includes an insurance button 9, a transmission assembly and a guide wire connecting piece 10.

[0055] The guide wire connecting piece 10 is connected with the guide wire 1, and the transmission assembly can transmit the displacement of the insurance button 9 to the guide wire connecting piece 10, so as to make the guide wire connecting piece 10 move towards the distal end of the outer tube 5.

[0056] The transmission assembly of the embodiment includes a gear set and a rack plate one 13 and a rack plate two 14 engaged with the gear set, specifically, the gear set includes a gear one 11 and a gear two 12, the rack plate one 13 is engaged with the gear one 11, the rack plate two 14 is engaged with the gear two 12, the rack plate two 14 is connected with the guide wire connecting piece 10, and the rack plate one 13 is located on the moving path of the insurance button 9, specifically, the insurance button 9 is connected with a connecting rod 15, after the insurance button 9 is pressed, the connecting rod 15 can abut against the rack plate one 13 and drive the gear one 11 and the gear two 12 to rotate synchronously, the gear two 12 drives the rack plate two 14 to move, so as to make the guide wire connecting piece 10 push the guide wire 1 to move towards the distal end of the outer tube 5, the guide wire 1 located in the delivery catheter 7 is in a straight line, the guide wire 1 is made of memory alloy, after the distal end of the guide wire 1 extends out of the delivery catheter 7, it expands into the open ring structure 3 by itself;

[0057] The driving assembly two of the embodiment includes a firing button 16, a sliding piece 17 and a backflow indication block 18.

[0058] The backflow indication block 18 is connected with the sliding piece 17, a through slot is formed in the backflow indication block 18 and matched with the outer tube 5, the outer tube 5 is fixed in the through slot, and the delivery catheter is fixedly connected with the inner wall of the outer tube 5.

[0059] The gear one 11 and the gear two 12 are coaxially arranged and are rotatably installed on the sliding piece 17, the rack plate two 14 and the guide wire connecting piece 10 are slidably arranged on the sliding piece 17.

[0060] The firing button 16 is connected with a half gear 23, and the sliding piece 17 is fixedly connected with a rack plate three 19 engaged with the half gear 23;

[0061] The firing button 16 is hinged in the shell of the handle 4, and a notch groove is formed in the handle 4 to cooperate with the firing button 16, so that a part of the firing button 16 extends out of the handle 4. When the firing button 16 is pressed, the half gear 23 drives the rack plate three 19 and the sliding piece 17 to move away from the distal end of the outer tube 5. The gear one 11 on the sliding piece 17 contacts and rotates with the rack plate one 13 (the rack plate has a rear limit, and after the safety button 9 is pressed, the rack plate moves a certain distance to reach the rear limit, and cannot be moved further) during the movement. The gear two 12 rotates with the gear one 11, and drives the rack plate two 14 to move away from the distal end of the outer tube 5, so that the guide wire connecting piece 10 drives the guide wire 1 to move in the same direction. Since the outer tube 5 is fixedly connected with the blood return indicating block 18, the outer tube 5 and the guide wire 1 are withdrawn together, and the withdrawal distance of the guide wire 1 is greater than that of the outer tube 5;

[0062] A limiting portion 20 is fixedly arranged in the handle 4, and the proximal end of the push rod 6 abuts against the limiting portion 20, so that the position of the push rod 6 remains unchanged during the withdrawal of the outer tube 5, thereby pushing the hemostatic plug 8 out of the distal end of the outer tube 5, achieving the firing of the hemostatic plug 8, and completing the hemostasis work.

[0063] Before releasing the hemostatic plug 8, in order to prevent the open ring structure 3 of the guide wire 1 from being separated from the blood vessel wall, the position of the guide wire 1 needs to be known. Therefore, the handle 4 is further provided with an indicating piece 21. A transparent indicating window 22 is fixedly arranged above the handle 4, and an indicating mark one is arranged on the upper side of the indicating piece 21. An indicating mark two is arranged on the lower side of the transparent indicating window 22. The indicating piece 21 is fixedly connected with the guide wire 1. The indicating mark one is provided with at least two color blocks distributed along the length direction of the guide wire 1, and the indicating mark two can cover at least one of the color blocks.

[0064] The operator can see different indicating patterns through the transparent indicating window 22. Specifically, the indicating mark one of the embodiment has two color blocks, one of which is white and the other of which is red. The red color block is closer to the distal end of the outer tube 5. The indicating mark two is black. Therefore, there are three indicating patterns: white-black, black, and black-red. When the indicating pattern changes from white-black to black, the withdrawal of the occluder is stopped. If the occluder is further withdrawn, the black-red pattern appears. At this time, it is a warning state. If the occluder is further withdrawn, the guide wire 1 will be pulled out of the femoral artery, resulting in a failed operation. Therefore, when the black-red pattern appears, the occluder needs to be gently pushed forward to the black-black state.

[0065] The distal end in the above description refers to the end far away from the handle 4, for example, the distal end of the outer tube 5 is the end of the two ends of the outer tube 5 far away from the handle 4.

[0066] The occlusion process of the embodiment is as follows:

[0067] Step 1: pass the distal end of the outer tube 5 through the cortex and implant it into the femoral artery;

[0068] Step 2: press the safety button 9, the safety button 9 pushes the rack plate one 13 to move through the connecting rod 15, the rack plate one 13 drives the gear one 11 and the gear two 12 to rotate synchronously, the gear two 12 drives the rack plate two 14 to move, so that the guide wire connecting piece 10 pushes the guide wire 1 to move towards the distal end of the outer tube 5, so that the distal end of the guide wire 1 extends out of the delivery catheter 7, that is, the open ring structure 3 is released, the open ring structure 3 is hung on the blood vessel wall, and the occluder is in the released state;

[0069] Step 3: retreat the occluder, because the guide wire 1 is hung on the blood vessel wall, it can be understood that the guide wire 1 remains stationary, the indicating mark two of the transparent indicating window 22 moves towards the indicating mark one, which is in the initial state of white-black pattern, and as the occluder retreats, the indicating mark two covers the indicating mark one, which is only in the black pattern;

[0070] Step 4: when the black pattern appears, press the firing button 16, the half gear 23 drives the rack plate three 19 and the sliding piece 17 to move away from the distal end of the outer tube 5, the gear one 11 on the sliding piece 17 contacts and rotates with the rack plate one 13 in the process of moving, the gear two 12 rotates with the gear one 11, and the gear two 12 drives the rack plate two 14 to move away from the distal end of the outer tube 5, so that the guide wire 1, the outer tube 5 and the delivery catheter 7 retreat together, while the push rod 6 is hindered by the limiting part 20 and cannot retreat, so as to push out the hemostatic plug 8, and the occluder is in the fired state.

[0071] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit and essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0072] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A guide wire, characterized in that: The guide wire includes a main body section and an open annular structure, wherein the open annular structure is perpendicular to the main body section, and an intersection of the open annular structure and the main body section is located at an outer edge of the open annular structure.

2. The guide wire according to claim 1, wherein The arc of the open annular structure is 300°-320°.

3. The guide wire according to claim 1, wherein The diameter of the open annular structure is 4 mm to 4.5 mm.

4. A femoral artery occluder, comprising the guidewire according to any one of claims 1 to 3, characterized in that: Also included is a handle and a tampon delivery assembly; Wherein, the hemostatic tampon delivery assembly includes an outer tube, a pushing rod and a delivery catheter; The pushing rod and the delivery catheter are both located in the outer tube, and the guide wire is located in the delivery catheter; The distal end of the pushing rod is connected to a pushing block for contacting the hemostatic tampon, and the pushing block has a recess capable of accommodating the delivery catheter; The handle is provided with a driving component 1 and a driving component 2, wherein the driving component 1 is used to drive the guide wire to move toward the distal end of the outer tube until the guide wire extends out of the delivery catheter and releases the open-type annular structure; the driving component 2 is used to drive the guide wire and the outer tube toward the inside of the handle until the open-type annular structure is withdrawn into the delivery catheter.

5. The femoral artery occluder according to claim 4, characterized in that: The driving assembly 1 includes a safety button, a transmission assembly and a guide wire connector; wherein the guidewire connector is connected to the guidewire; The transmission assembly can transmit the displacement of the safety button to the guide wire connector, so that the guide wire connector moves toward the distal end of the outer tube.

6. The femoral artery occluder according to claim 5, characterized in that: The transmission assembly comprises: Rack plate 1, located on the moving path of the safety button; Rack plate 2, connected to the guide wire connector; and Gear 1 and gear 2 are coaxially arranged, rack plate 1 is meshed with gear 1, and rack plate 2 is meshed with gear 2; The safety button is connected to a connecting rod. After the safety button is pressed, the connecting rod can abut against the rack plate 1 and drive the gear 1 and the gear 2 to rotate synchronously.

7. The femoral artery occluder according to claim 6, characterized in that: The second driving component includes a firing button, a sliding member and a blood return indicator block; The firing button is connected to a half gear, and the sliding member is fixedly connected to a rack plate three that is meshed with the half gear; The blood return indicator block is connected to the sliding part. A through groove matching the outer tube is opened on the blood return indicator block. The outer tube is fixed in the through groove. The delivery catheter is fixedly connected to the inner wall of the outer tube.

8. The femoral artery occluder according to claim 7, characterized in that: The gear 1 and the gear 2 are rotatably mounted on the sliding member, and the rack plate 2 and the guide wire connector are slidably arranged on the sliding member.

9. The femoral artery occluder according to claim 6, wherein: The handle is further provided with an indicator member, a transparent indicator window fixed in the handle is provided above the indicator member, an indicator mark 1 is provided on the upper side of the indicator member, and an indicator mark 2 is provided on the lower side of the transparent indicator window; The indicator is fixedly connected to the guide wire, the indicator mark 1 is provided with at least two color blocks distributed along the length direction of the guide wire, and the indicator mark 2 can cover at least one of the color blocks.

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