Removal device for minimally invasive rejection of subcutaneous tissue

Abstract

The utility model relates to a removing device for removing subcutaneous tissue in a minimally invasive mode, and belongs to the technical field of medical instruments. Comprising a handle which is provided with a mounting groove; the first end of the connecting assembly is detachably connected with the mounting groove; the planing piece is detachably arranged at the second end of the connecting assembly and used for removing subcutaneous tissue. According to the internal fistula subcutaneous tissue planer, the planing sheet extends into the subcutaneous tissue for planing, part of the subcutaneous tissue is cut off, and the thickness of the internal fistula blood vessel talus is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a removal device for minimally invasive removal of subcutaneous tissue. Background Technology

[0002] Hemodialysis patients need to have an arteriovenous fistula (AVF) created, which is an artificial anastomosis between a human artery and vein. A mature AVF is used in the superficial venous segment (a vein that has become an arterialized). In most patients, the fistula vein is quite superficial, for example, the vessel is 0.5 cm from the skin surface. However, in obese patients, even if an AVF is created, puncture is more difficult due to thickened subcutaneous tissue (if >1.0 cm).

[0003] Therefore, there is an urgent need for a device to minimally invasively remove excess subcutaneous tissue, namely fat. Utility Model Content

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A removal device for minimally invasive removal of subcutaneous tissue, comprising:

[0006] The handle is provided with a mounting groove;

[0007] A connecting component, the first end of which is detachably connected to the mounting slot;

[0008] A shaving blade, detachably disposed at the second end of the connecting assembly, is used to remove subcutaneous tissue.

[0009] Furthermore, there are two mounting slots, which are arranged opposite to each other at both ends of the handle;

[0010] The connecting components are provided in two parts, namely a first connecting component and a second connecting component; the first end of the first connecting component is detachably connected to one of the mounting slots, and the second end of the first connecting component is connected to the first end of the planer blade; the first end of the second connecting component is detachably connected to the other mounting slot, and the second end of the second connecting component is connected to the second end of the planer blade.

[0011] Furthermore, the first connecting assembly includes a first rod and a second rod, which are rotatably connected and arranged in a cross configuration; both ends of the first rod and the second rod are fixed with steel wires; wherein, the first connecting assembly and the second connecting assembly have the same structure.

[0012] The planer blade is provided with two blades, namely a first planer blade and a second planer blade. The first planer blade is connected to the first end of the first rod by a steel wire, and the second planer blade is connected to the first end of the second rod by a steel wire.

[0013] It is also provided with a pressing rod, which is mounted on the handle by a sliding assembly; the second end of the first rod is disposed on the pressing rod and is detachably connected to the pressing rod by a steel wire; the second end of the second rod is disposed in the mounting groove and is detachably connected to the mounting groove by a steel wire.

[0014] Furthermore, the sliding assembly includes a mounting plate disposed on the handle, the mounting plate having a sliding groove, a sliding rod disposed within the sliding groove, and a sliding block disposed on the sliding rod; the sliding block is connected to the pressing rod.

[0015] Furthermore, the pressing rod has connecting grooves at both ends; the second end of the first rod is disposed on the connecting groove and is detachably connected to the connecting groove by a steel wire.

[0016] Furthermore, the first planer blade has first grooves at both ends on the side away from the blade edge, and the inner wall of the first groove has a first protrusion, which is used to install the first rod.

[0017] The second planer blade has a second groove at both ends on the side away from the blade edge, and a second protrusion is provided on the inner side wall of the second groove. The second protrusion is used to install the second rod.

[0018] Furthermore, both the first and second protrusions have a T-shaped structure.

[0019] Beneficial effects:

[0020] This invention provides a device for minimally invasive removal of subcutaneous tissue. A shaving blade is inserted into the subcutaneous tissue to shave away part of the subcutaneous tissue and reduce the thickness of the fistula vessel from the skin. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a removal device for minimally invasive removal of subcutaneous tissue according to the present invention;

[0022] Figure 2 This is a cross-sectional view of point A of this utility model;

[0023] Among them, 1. First planer blade; 11. First groove; 2. Second planer blade; 3. Second rod; 4. First rod; 5. Handle; 51. Mounting groove; 6. Sliding assembly; 61. Mounting plate; 62. Sliding rod; 63. Sliding block; 7. Pressing rod; 71. Connecting groove. Detailed Implementation

[0024] Example 1

[0025] refer to Figures 1-2 A removal device for minimally invasive removal of subcutaneous tissue, comprising:

[0026] Handle 5, the handle is provided with a mounting groove 51;

[0027] A connecting component, the first end of which is detachably connected to the mounting slot 51;

[0028] A shaving blade, detachably mounted at the second end of the connecting assembly, is used to remove subcutaneous tissue.

[0029] Preferably, there are two mounting slots 51, which are arranged opposite to each other at both ends of the handle 5;

[0030] There are two connecting components, namely a first connecting component and a second connecting component; the first end of the first connecting component is detachably connected to one of the mounting slots 51, and the second end of the first connecting component is connected to the first end of the planer blade; the first end of the second connecting component is detachably connected to the other mounting slot 51, and the second end of the second connecting component is connected to the second end of the planer blade.

[0031] Preferably, the first connecting assembly includes a first rod 4 and a second rod 3, which are rotatably connected and arranged in a cross configuration; both ends of the first rod 4 and the second rod 3 are fixed with steel wires; wherein, the first connecting assembly and the second connecting assembly have the same structure.

[0032] There are two planing blades, namely the first planing blade 1 and the second planing blade 2. The first planing blade 1 is connected to the first end of the first rod 4 by a steel wire, and the second planing blade 2 is connected to the first end of the second rod 3 by a steel wire.

[0033] A pressing rod 7 is also provided, which is mounted on the handle 5 via a sliding assembly 6; the second end of the first rod 4 is disposed on the pressing rod 7 and is detachably connected to the pressing rod 7 via a steel wire; the second end of the second rod 3 is disposed in the mounting groove 51 and is detachably connected to the mounting groove 51 via a steel wire.

[0034] In this embodiment, the first rod 4 and the second rod 3 can be made of rigid materials.

[0035] Preferably, the sliding component 6 includes a mounting plate 61, which is disposed on the handle 5. The mounting plate 61 has a sliding groove, and a sliding rod 62 is disposed in the sliding groove. A sliding block is disposed on the sliding rod 62. The sliding block 63 is connected to the pressing rod 7.

[0036] Preferably, the pressing rod 7 has connecting grooves 71 at both ends; the second end of the first rod 4 is provided on the connecting groove 71 and is detachably connected to the connecting groove 71 by a steel wire.

[0037] Preferably, the first planer blade 1 has a first groove 11 at both ends on the side away from the blade edge, and the inner wall of the first groove 11 has a first protrusion, which is used to install the first rod 4.

[0038] The second planer blade 2 has a second groove at both ends on the side away from the blade edge, and a second protrusion is provided on the inner side wall of the second groove. The second protrusion is used to install the second rod 3.

[0039] Preferably, both the first protrusion and the second protrusion have a T-shaped structure.

[0040] In this embodiment, the first end of the first rod 4 is wound around the first protrusion with a steel wire, and the second end is wound into the connecting groove 71 with a steel wire; the first end of the second rod 3 is wound around the second protrusion with a steel wire, and the second end is wound into the mounting groove 51 with a steel wire.

[0041] In other embodiments, to prevent accidental damage to blood vessels, color Doppler ultrasound can be used for localization, and the operation can be performed on areas that are close to nerves and other blood vessels.

[0042] In this embodiment, the second shaving blade 2 has an arc-shaped structure, wherein the middle distance between the first shaving blade 1 and the second shaving blade 2 is greater than the distance between the two ends of the first shaving blade 1 and the second shaving blade 2.

[0043] In this embodiment, the first section 1 and the second section 2 are inclined inward.

[0044] In other embodiments, the blades of the first and second planing blades are both positioned opposite each other.

[0045] Working principle: The shaving blade is inserted laterally into the subcutaneous tissue through a small hole, extending to the small hole on the opposite side. The connecting component is installed on the shaving blade and the handle. Pushing the handle will shave off the subcutaneous tissue. The distance between the first and second shaving blades can be adjusted by pressing the pressing rod, so that the shaved tissue is slowly thinned until it is cut off. The shaved subcutaneous tissue can be pulled out through the small hole. Repeat the above operation to reduce the thickness of the fistula vessel from the skin.

[0046] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A removal device for minimally invasive removal of subcutaneous tissue, characterized in that, include: A handle, wherein the handle is provided with a mounting groove; A connecting component, the first end of which is detachably connected to the mounting slot; A shaving blade, detachably disposed at the second end of the connecting assembly, is used to remove subcutaneous tissue.

2. The removal device for minimally invasive removal of subcutaneous tissue as described in claim 1, characterized in that, The mounting slot is provided in two places, and the two mounting slots are arranged opposite each other at both ends of the handle; The connecting components are provided in two parts, namely a first connecting component and a second connecting component; the first end of the first connecting component is detachably connected to one of the mounting slots, and the second end of the first connecting component is connected to the first end of the planer blade; the first end of the second connecting component is detachably connected to the other mounting slot, and the second end of the second connecting component is connected to the second end of the planer blade.

3. The removal device for minimally invasive removal of subcutaneous tissue as described in claim 2, characterized in that, The first connecting assembly includes a first rod and a second rod, which are rotatably connected and arranged in a cross configuration; both ends of the first rod and the second rod are fixed with steel wires; wherein the first connecting assembly and the second connecting assembly have the same structure. The planer blade is provided with two blades, namely a first planer blade and a second planer blade. The first planer blade is connected to the first end of the first rod by a steel wire, and the second planer blade is connected to the first end of the second rod by a steel wire. It is also provided with a pressing rod, which is mounted on the handle by a sliding assembly; the second end of the first rod is disposed on the pressing rod and is detachably connected to the pressing rod by a steel wire; the second end of the second rod is disposed in the mounting groove and is detachably connected to the mounting groove by a steel wire.

4. The removal device for minimally invasive removal of subcutaneous tissue as described in claim 3, characterized in that, The sliding assembly includes a mounting plate disposed on the handle. The mounting plate has a sliding groove, a sliding rod disposed in the sliding groove, and a sliding block disposed on the sliding rod. The sliding block is connected to the pressing rod.

5. The removal device for minimally invasive removal of subcutaneous tissue as described in claim 3, characterized in that, The pressing rod has connecting grooves at both ends; the second end of the first rod is located on the connecting groove and is detachably connected to the connecting groove by a steel wire.

6. The removal device for minimally invasive removal of subcutaneous tissue as described in claim 3, characterized in that, The first planer blade has a first groove at both ends on the side away from the blade edge, and a first protrusion is provided on the inner side wall of the first groove. The first protrusion is used to install the first rod. The second planer blade has a second groove at both ends on the side away from the blade edge, and a second protrusion is provided on the inner side wall of the second groove. The second protrusion is used to install the second rod.

7. The removal device for minimally invasive removal of subcutaneous tissue as described in claim 6, characterized in that, Both the first and second protrusions have a T-shaped structure.

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