CN109199514B

CN109199514B - Absorbable vascular clamp

Info

Publication number: CN109199514B
Application number: CN201710540227.9A
Authority: CN
Inventors: 孙宝峰; 马猛
Original assignee: Jiangsu Fengh Medical Equipment Co Ltd
Current assignee: Jiangsu Fengh Medical Equipment Co Ltd
Priority date: 2017-07-04
Filing date: 2017-07-04
Publication date: 2020-12-15
Anticipated expiration: 2037-07-04
Also published as: CN109199514A

Abstract

An absorbable vascular clamp includes a first clamp arm and a second clamp arm. By means of the two clamping arms, large-angle opening can be realized, and the blood vessel can be clamped conveniently. The vascular clamp is constructed of an absorbable bi-layer material.

Description

Absorbable vascular clamp

Technical Field

The invention relates to an absorbable vascular clamp, and belongs to the field of medical instruments.

Background

Minimally invasive surgery refers to a new technology of providing surgical field through electronic images such as laparoscope and thoracoscope, and performing surgery in human body through instruments such as anastomat. Due to the superiorities of small wound, light pain and quick recovery, minimally invasive surgery is gradually popularized in medical treatment. In minimally invasive surgery, vascular clamps are used to stop bleeding from blood vessels.

Current vascular clamp includes first arm lock and second arm lock, during the use, thereby carries out the centre gripping to blood vessel through the block of first arm lock and second arm lock and realizes stanching. However, the first clamping arm and the second clamping arm are of an integrated structure, so that large-angle opening cannot be realized. The vascular clamp is made of materials which are not absorbed by human body, and the vascular clamp left in the human body is not good for health. Some current vascular clamps have adopted absorbable material, but the intensity of material is relatively poor, leads to this hemostatic clamp's clamping-acting force not enough to because absorption cycle is shorter, can't provide lasting clamping-acting force.

Therefore, it is necessary to provide a further solution to the above problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a vascular clamp to overcome the defects in the prior art.

An absorbable vascular clamp comprised of a first clamp arm comprising a first component and a second clamp arm comprising a first component and a second component, the second component of the first clamp arm being rotatable within the second component of the second clamp arm such that the first clamp arm is rotatable from a first position to a second position; in the first position, a portion of the first element of the first clip arm is located in the second element of the second clip arm; in the second position, the first element of the first clamp arm mates with the first element of the second clamp arm. The vascular clamp is made of double-layer materials and comprises magnesium-zinc alloy and a plastic layer coated with the magnesium-zinc alloy.

The first element of the first clamp arm has a first end, and the first element of the second clamp arm has a bore into which the first end can be inserted to effect a fit.

The first element of the first clamping arm is a linear first rod; the first element of the second clamp arm is arc-shaped.

The second element of the first clamping arm is a linear second rod, and the first rod is perpendicular to the second rod and forms a T shape; the first rod is connected with the second rod or integrally formed.

The first element of the second clamping arm is arc-shaped; the first element of the second clamp arm includes a first tab and a second tab with the aperture formed therebetween.

A gap is formed between the first sheet piece and the second sheet piece, and the gap is communicated with the hole.

The second element of the first clamping arm is a linear second rod; the second element of the second clip arm has a channel for receiving the portion of the first element of the first clip arm.

The first element of the first clamping arm is a linear first rod, and the first rod is vertical to the second rod and forms a T shape; the first rod is connected with the second rod or integrally formed.

The second element of the second clamp arm comprises an upper portion, and the upper portion is arc-shaped; the upper portion has the through groove.

The second element of the second clamp arm further includes a planar lower portion, the upper portion being integral with the lower portion.

The first element of the second clamping arm is in a first arc shape, the shape of the second element of the second clamping arm comprises a second arc shape, and the arc length of the second arc shape is greater than that of the first arc shape.

The second clamping arm further comprises an intermediate element, the intermediate element is located between the first element and the second element, the intermediate element is connected with or integrally formed with the first element, and the intermediate element is connected with or integrally formed with the second element.

The plastic layer is made of absorbable polymer material. The absorbable polymer material is PLA.

The magnesium-zinc alloy comprises: 1 to 6 weight percent of zinc and 94 to 99 weight percent of magnesium.

The first clamping arm and the second clamping arm are independent parts, and one end of the first clamping arm can rotate in the second element of the second clamping arm in the direction opposite to the pressing direction, so that the vascular clamp can be opened at a large angle. The vascular clamp adopts double-layer absorbable materials, so that the strength of the vascular clamp is ensured, the time of absorption by a human body is prolonged, and the clamping time of the blood vessel is prolonged.

Drawings

FIG. 1 is a perspective view of a first arm of the vascular clamp of the present invention;

FIG. 2 is a perspective view of a second arm of the vascular clamp of the present invention;

fig. 3 is a schematic view of the vascular clamp of the present invention after assembly.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1 to 3, the vascular clamp of the present invention includes a first clamp arm 1 and a second clamp arm 2.

As shown in fig. 1, the first clamping arm 1 includes a first rod 101 and a second rod 102, and the first rod 101 and the second rod 102 are perpendicular to each other to form a T-shape. The length of the first rod 101 is greater than the length of the second rod 102. The first rod 101 includes a first end and a second end, the first end is an insertion end which is matched with the first element 201 of the second clamping arm 2, and the first rod 101 and the second rod 102 are connected or integrally formed at the second end.

As shown in fig. 2, the second clip arm 2 includes a first member 201, a second member 202, and an intermediate member 203. The first member 201 has a first arc shape that is connected to or integrally formed with the intermediate member 203, and the intermediate member 203 is located inside the first arc shape. The first element 201 comprises a first sheet 2011 and a second sheet 2012, a gap is formed between the upper part of the first sheet 2011 and the upper part of the second sheet 2012, a hole 2013 is formed between the middle part of the first sheet 2011 and the middle part of the second sheet 2012, and the lower part of the first sheet 2011 and the lower part of the second sheet 2012 are integrated. The slit communicates with the hole 2013. Due to the existence of the gap, when the first end of the first rod 101 of the first clamp arm 1 is pressed in, the upper portion of the first sheet 2011 and the upper portion of the second sheet 2012 abutted against the first end are more likely to be elastically deformed, so that the first end of the first rod 101 is easily slid and pressed in. The hole 2013 is used for accommodating and stopping the first end of the first rod 101 of the pressed first clamping arm 1, and after the first end enters the hole 2013, the first clamping arm 1 is tightly attached to the second clamping arm 2, so that the clamping of the vascular clamp can be realized, and the clamping and the hemostasis of the blood vessel can be realized. The shape of the aperture 2013 is adapted to the shape of the first end of the first rod 101 of the first clamp arm 1. For the arc shape, the invention defines that one side of the circle center is the inner side of the arc shape, and the other side of the arc shape is the outer side, namely, the arc shape is concave and convex. The "up" and "down" directions are based on the orientation and positional relationship shown in fig. 2.

As shown in fig. 2, the second member 202 includes a lower portion that is planar and an upper portion that is arcuate. The lower portion of the second member 202 is planar and can be attached to the lower surface of the second rod 102 after the vascular clamp is engaged. The upper portion of the second element 202 is in a second arc shape having a greater arc length than the first arc shape. The second arc shape, which has a longer arc length, provides the second element 202 with a higher strength. The upper portion of the second member 202 has a through slot 2021, and the through slot 2021 divides at least a portion of the upper portion of the second member 202 into two small arc-shaped pieces. Obviously, the longer the distance that the through groove 2021 extends at the upper portion of the second element 202, the larger the maximum opening angle between the first clamping arm 1 and the second clamping arm 2. The through groove 2021 enables the first clamping arm 1 and the second clamping arm 2 to be opened at a large angle, so as to be convenient for clamping a blood vessel. The lower portion of the second member 202 is connected to or integrally formed with the intermediate member 203, and the intermediate member 203 is located inside the second arc.

The intermediate member 203 is rectilinear, preferably it is a straight rod.

The second rod 102 of the first clamping arm 1 is placed in the space enclosed by the second element 202 of the second clamping arm 2. When opened, the second end or a portion adjacent to the second end of the first rod 101 of the first clamp arm 1 is located in the through groove 2021. The first clamp arm 1 is pressed down, and as it rotates, the first end of the first rod 101 is in sliding contact with the first sheet 2011 and the second sheet 2012 of the first element 201, and elastically deforms the first sheet 2011 and the second sheet 2012. The first end of the first rod 101 continues to rotate, and enters the hole 2013, the first sheet-shaped piece 2011 and the second sheet-shaped piece 2012 recover from elastic deformation, the first clamping arm 1 and the second clamping arm 2 are tightly attached to realize clamping of the vascular clamp, and clamping and hemostasis of the blood vessel are further realized. Also, with the rotation of the first clamp arm 1, even after the first end of the first rod 101 of the first clamp arm 1 is received in the hole 2013 of the first element 201 of the second clamp arm 2, the arc length of the second arc is such that the second end or a portion adjacent to the second end of the first rod 101 of the first clamp arm 1 is located in the through slot 2021 and cannot be disengaged from the through slot 2021.

The base material of first arm lock 1 and second arm lock 2 is magnesium zinc alloy to, wholly the cladding has the plastic layer, macromolecular material layer promptly on the base member. The plastic layer is made of absorbable high polymer material, preferably PLA (polylactic acid). The magnesium-zinc alloy can provide higher strength for the vascular clamp, so that larger clamping force can be applied to the vascular clamp, the vascular clamp maintains larger clamping force after clamping, and the effect of clamping a blood vessel is ensured. The magnesium-zinc alloy can also supplement trace elements of human bodies. In order to enhance the plasticity of the vascular clamp, the absorbable polymer material layer is coated on the surface of the magnesium-zinc alloy in an all-around manner. Because the degradation time of the plastic layer made of the high polymer material in the human body is longer than that of the magnesium-zinc alloy, the vascular clamp made of the double-layer absorbable material and formed by coating the magnesium-zinc alloy with the high polymer material plastic layer has longer degradation time and longer clamping time on the blood vessel in the human body compared with the vascular clamp made of single materials such as the magnesium-zinc alloy or the high polymer material.

Claims

1. An absorbable vascular clamp comprised of a first clamp arm comprising a first component and a second clamp arm comprising a first component and a second component, wherein the second component of the first clamp arm is rotatable within the second component of the second clamp arm such that the first clamp arm is rotatable from a first position to a second position; in the first position, a portion of the first element of the first clip arm is located in the second element of the second clip arm; in the second position, the first element of the first clamp arm mates with the first element of the second clamp arm; the second element of the second clamp arm having a channel for receiving the portion of the first element of the first clamp arm; the first element of the first clamp arm has a first end, the first element of the second clamp arm has a bore and a slot, the slot is in communication with the bore, and the first end is insertable into the bore for mating; the vascular clamp is made of a double-layer material, namely magnesium-zinc alloy and a plastic layer coated with the magnesium-zinc alloy.

2. The absorbable vascular clip of claim 1, wherein the first element of the first clip arm is a linear first stem; the first element of the second clamp arm is arc-shaped.

3. The absorbable vascular clip of claim 2, wherein the second component of the first clip arm is a linear second stem, the first stem being perpendicular to the second stem in a T-shape; the first rod is connected with the second rod or integrally formed.

4. The absorbable vascular clip of claim 1, wherein the first element of the second clip arm is arcuate; the first element of the second clamp arm includes a first tab and a second tab with the aperture formed therebetween.

5. The absorbable vascular clip of claim 4, wherein the first sheet and the second sheet have the gap therebetween.

6. The absorbable vascular clip of claim 1, wherein the second component of the first clip arm is a linear second stem.

7. The absorbable vascular clip of claim 6, wherein the first element of the first clip arm is a linear first stem, the first stem being perpendicular to the second stem in a T-shape; the first rod is connected with the second rod or integrally formed.

8. The absorbable vascular clip of claim 6, wherein the second element of the second clip arm includes an upper portion, the upper portion being arcuate; the upper portion has the through groove.

9. The absorbable vascular clip of claim 8, wherein the second element of the second clip arm further comprises a planar lower portion, the upper portion being integral with the lower portion.

10. The absorbable vascular clip of claim 1, wherein the first element of the second clip arm is a first arc and the shape of the second element of the second clip arm comprises a second arc having an arc length greater than an arc length of the first arc.

11. The absorbable vascular clip of claim 1, wherein the second clip arm further comprises an intermediate member located between the first member and the second member, the intermediate member being connected or integrally formed with the first member, the intermediate member being connected or integrally formed with the second member.

12. The absorbable vascular clip of claim 1, wherein the plastic layer is formed from an absorbable polymer material.

13. The absorbable vascular clip of claim 12, wherein the absorbable polymeric material is PLA.

14. The absorbable vascular clip of claim 1, wherein the magnesium-zinc alloy comprises: 1 to 6 weight percent of zinc and 94 to 99 weight percent of magnesium.