Noninvasive microscopic hemostatic clip

Abstract

The utility model provides a non-invasive microscopic hemostatic clip which is characterized in that the hemostatic clip comprises two working arms and a tail end, the tail end is of an oval structure, the two working arms are connected with the tail end and are symmetrically arranged, an isosceles triangle gap is formed between the two working arms, and the two working arms are connected with the tail end. And the size of the widest part of the gap is 0.2 mm and is gradually reduced towards the tail end until the surfaces of the two working arms are in contact with each other. The non-invasive microscopic hemostatic clip disclosed by the utility model meets the clipping and hemostasis requirements of deep cervical lymphatic vein anastomosis of the Alzheimer's disease.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a non-invasive microscopic hemostatic clip. Background Art

[0002] With the advancement of microscopy, surgical microscopes can magnify the surgical field of view 40-70 times, allowing surgeons to effectively treat Alzheimer's disease using deep cervical lymphatic and venous anastomosis. Alzheimer's disease is closely associated with intracranial accumulation of amyloid-β. Studies have shown that draining intracranial amyloid-β to the deep cervical veins via lymphatic drainage can alleviate many Alzheimer's symptoms or delay progression to more severe stages. Deep cervical lymphatic and venous anastomosis for Alzheimer's disease is performed through incisions around the neck, running from below the ear to the anterior third of the clavicle. Surgeons suture lymphatic and vascular vessels with a diameter less than 0.5 mm in the neck. However, because a tourniquet cannot be applied to the patient's neck, a large amount of lymphatic fluid or venous blood continues to flow from the 1-2 cm incision, severely obstructing the surgeon's field of view and increasing the difficulty of suturing, making this procedure extremely challenging.

[0003] If the existing hemostatic clamp is used to block the outflow of lymph or blood in the lymphatic vessels or veins, there will also be major disadvantages. The existing hemostatic clamp has a clamping force between the two working arms, and the clamping force depends on the elastic force of the tail end. There are two main types: (1) One type of hemostatic clamp adopts a Y-shaped structure with no cross working arms and an axis in the middle, such as Figure 1 As shown in the figure, a spring or spring is added to the tail end of the hemostatic clamp. When force is applied to the tail end, the spring or spring is compressed, the angle of the tail end becomes smaller, and the working arm opens and is inserted into the blood vessel. Then the force is released at the tail end, and the working arm closes due to the opening of the spring or spring, thus clamping the blood vessel. (2) Another type of hemostatic clamp adopts a Y-shaped structure with crossed working arms and no middle shaft, which is often called a counter-force hemostatic clamp in medicine, such as Figure 2 As shown, the hemostatic clamp applies force at the tail end, deforming the arc, while the working arm opens and is placed in the blood vessel. The tail end then releases force, and the working arm closes due to the tail end returning to its original shape, thus clamping the blood vessel. However, both types of hemostatic clamps are suitable for use in larger vascular anastomosis surgeries, and the minimum clamping force needs to be controlled at 0.15N. When the spring or shrapnel force is too small, the surgeon will damage the hemostatic clamp by pinching it in the hand during the operation, and the spring or shrapnel cannot be restored. Secondly, the specific structure of these two types of hemostatic clamps requires that their length must be more than 8mm. Therefore, if the existing hemostatic clamp is used in deep cervical lymphovenous anastomosis for Alzheimer's disease, there will be two disadvantages: first, it does not meet the surgical requirement of a clamping force of less than 0.05N; second, it does not meet the surgical requirement of a length of 5-8mm.

[0004] In view of the fact that the existing hemostatic clips cannot well meet the hemostatic needs of deep cervical lymphovenous anastomosis for Alzheimer's disease, the utility model develops a new microscopic hemostatic clip. Utility Model Content

[0005] In order to solve the above problems, the utility model aims to provide a non-invasive microscopic hemostatic clip suitable for deep cervical lymphovenous anastomosis.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a non-invasive microscopic hemostatic clip, which is characterized in that the hemostatic clip comprises a working arm and a tail end; the tail end is in an elliptical structure; there are two working arms connected to the tail end, the two working arms are symmetrically arranged, and an isosceles triangle gap is formed between the two working arms, the widest size of the gap is 0.2 mm and gradually decreases towards the tail end until the surfaces of the two working arms contact.

[0008] Furthermore, the non-invasive micro hemostatic clip provided by the present invention may also have the following feature: wherein the length of the working arm is 3 mm to 4 mm.

[0009] Furthermore, the non-invasive micro hemostatic clip provided by the present invention may also have the following feature: the length of the tail end is 1 mm to 4 mm.

[0010] Furthermore, the non-invasive microscopic hemostatic clip provided by the present invention may also have the following feature: the hemostatic clip is an integrally formed structure in the shape of a slat.

[0011] Furthermore, the non-invasive microscopic hemostatic clip provided by the present invention may also have the following characteristics: wherein the thickness of the slat-like structure is 0.1 mm to 0.4 mm, and the width of the slat-like structure is 1 mm.

[0012] Furthermore, the non-invasive microscopic hemostatic clip provided by the present invention may also have the following feature: wherein, the connection between the working arm and the tail end is an arc transition.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The working arm of the non-invasive micro-hemostatic clamp of the present invention is formed with a gap, which gradually narrows from 0.2mm to 0mm. The gap can clamp lymphatic vessels or veins, and the clamping force is very small. The clamping force provided by the size of the gap of the hemostatic clamp is well suitable for lymphatic vessels or veins below 0.5mm, does not damage the lymphatic vessels or veins, can clamp the lymphatic vessels or veins for a long time, and achieves non-invasive hemostasis. It fully meets the clamping force required for deep cervical lymphovenous anastomosis for Alzheimer's disease.

[0015] The gap in the non-invasive micro hemostatic clip of the utility model is an isosceles triangle that gradually narrows from 0.2mm to 0mm. When the diameter of the lymphatic vessel or vein is small, it can be clamped near the tail end. For example, for non-invasive hemostasis of a 0.05mm single-layer tube wall, as long as the hemostatic clip is placed at the 0.1mm gap of the isosceles triangle, the outflow of lymph in the lymphatic vessel can be just blocked. When the diameter of the lymphatic vessel or vein is large, it can be clamped near the head end. The non-invasive micro hemostatic clip has a wide adaptability.

[0016] The non-invasive microscopic hemostatic clip of the utility model is a Y-shaped structure with no cross-working arms and no axis in the middle. Compared with the hemostatic clips in the prior art, its structure is simpler. Its total length is 4-8mm and its width is 1mm. It is an ultra-small hemostatic clip that fully meets the hemostatic clip length required for deep cervical lymphovenous anastomosis for Alzheimer's disease. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a hemostatic clip in the prior art;

[0018] Figure 2 It is a schematic structural diagram of another hemostatic clip in the prior art;

[0019] Figure 3 This is a three-dimensional diagram of a non-invasive micro hemostatic clip in an embodiment of the present utility model;

[0020] Figure 4 This is a front view of the non-invasive micro hemostatic clip in an embodiment of the present utility model;

[0021] Figure 5 It is a top view of the non-invasive micro hemostatic clip in an embodiment of the utility model. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the following embodiments are combined with the accompanying drawings to specifically illustrate the technical solutions of the present invention.

[0023] <Example>

[0024] See Figure 3 The embodiment of the present invention provides a non-invasive microscopic hemostatic clip, which is an integrally formed structure made of medical stainless steel or titanium alloy. It includes a working arm 1 and a tail end 2.

[0025] See Figure 3 and Figure 4 The tail end 2 is an elliptical structure, and the working arm 1 is two and connected to the tail end 2. The connection between the working arm 1 and the tail end 2 (see Figure 3Point B) is an arc transition.

[0026] The two working arms 1 are symmetrically arranged, and an isosceles triangle gap is formed between the two working arms 1 (see Figure 3 As shown in A), the widest dimension of the gap (as shown in Figure 4 The distance d) shown is 0.2 mm and gradually decreases toward the rear end until the surfaces of the two working arms 1 come into contact.

[0027] The length of the working arm 1 (such as Figure 4 As shown in a) is 3mm to 4mm. The straight length of the tail end (such as Figure 4 b) is 1 mm to 4 mm. In this embodiment, the length dimension a of the working arm 1 is 4 mm, and the length dimension b of the tail end 2 is 4 mm. However, this is not limiting. For example, in other embodiments, the length dimension of the tail end 2 can be set to 1 mm, and the length dimension of the working arm 1 can be set to 3 mm. That is, the total length of the hemostatic clip can be as short as 4 mm.

[0028] The hemostatic clip is a one-piece structure in the form of a slat, the thickness of which (e.g. Figure 4 c) is 0.1mm to 0.4mm, preferably 0.2mm; the width of the strip (such as Figure 5 f) shown is 1 mm.

[0029] The usage of the non-invasive micro hemostatic clip of the embodiment of the utility model is as follows:

[0030] Surgeons use this non-invasive micro-hemostatic clip under an operating microscope. The wall of the patient's deep neck lymph or vein is less than 0.1 mm, and the isosceles triangle gap of the working arm 1 (see Figure 3 The non-invasive microscopic hemostatic clamp of the present invention solves the problem of excessive clamping force of the existing hemostatic clamps. The clamping force has nothing to do with the elliptical elastic force at the tail end. Therefore, the clamping force provided by the size of the gap of the hemostatic clamp is well suitable for lymphatic vessels or veins below 0.5 mm, and can also clamp the lymphatic vessels or veins for a longer period of time, thereby achieving non-invasive hemostasis.

[0031] The tail end of this non-invasive micro hemostatic clamp is oval-shaped. Using a tool to expand the inside of the oval can cause the tail end to deform. The deformation of the tail end causes the two working arms 1 to open, and the blood vessel is placed therein. Then, the tail end is released, and the working arms 1 will close as the oval shape of the tail end 2 returns to its original shape, thereby clamping the blood vessel.

[0032] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to fall within the scope of protection of the present invention.

Claims

1. A non-invasive micro hemostatic clip, characterized by: The hemostatic clamp includes a working arm and a tail end; the tail end has an elliptical structure; there are two working arms connected to the tail end, and the two working arms are symmetrically arranged, forming an isosceles triangle gap between the two working arms. The widest size of the gap is 0.2 mm and gradually shrinks towards the tail end until the surfaces of the two working arms contact.

2. The non-invasive micro hemostatic clip according to claim 1, wherein: in, The length of the working arm is 3 mm to 4 mm.

3. The non-invasive micro hemostatic clip according to claim 2, wherein: in, The length of the tail end is 1 mm to 4 mm.

4. The non-invasive micro hemostatic clip according to claim 1, wherein: in, The hemostatic clip is a strip-shaped integrally formed structure.

5. The non-invasive micro hemostatic clip according to claim 4, characterized in that: in, The thickness of the slat-like structure is 0.1 mm to 0.4 mm, and the width of the slat-like structure is 1 mm.

6. The non-invasive micro hemostatic clip according to claim 4, characterized in that: in, The connection between the working arm and the tail end is an arc transition.

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