CN111214272A

CN111214272A - Shape memory alloy closure clip and stacked multiple closure clip device

Info

Publication number: CN111214272A
Application number: CN201811469443.XA
Authority: CN
Inventors: 杨潇; 杨西群
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-11-27
Filing date: 2018-11-27
Publication date: 2020-06-02

Abstract

The present invention relates to a stackable multiple hair closure clip, and more particularly, to a shape memory alloy closure clip and a stackable multiple hair closure clip device. The invention provides a shape memory alloy closed clamp and a stacked multiple closed clamp device, which are used for clamping and stopping bleeding of a mucous membrane layer wound in a digestive tract and ligation and excision of hyperplastic tissues, and aims to solve the technical problems that an existing closed clamp is small in clamping area, poor in hemostasis effect and only capable of triggering by one shot. The single closed clamp comprises a closed strip made of a titanium-nickel shape memory alloy material, wherein the strip is formed by two multi-tooth sections and two arc sections which are arranged in a staggered mode, staggered and sequentially connected end to end; the stacked multi-closing-clip device comprises a plurality of closing clips, a hollow cylindrical release head for stacking the closing clips and a traction rope with a rope knot arranged in advance, wherein the rope knot is clamped between the two stacked closing clips, and the closing clips can be sequentially pushed out by pulling the traction rope.

Description

Shape memory alloy closure clip and stacked multiple closure clip device

Technical Field

The present invention relates to a stackable multiple hair closure clip, and more particularly, to a shape memory alloy closure clip and a stackable multiple hair closure clip device.

Background

Closed clamp under scope (gastroscope, enteroscope) that uses clinically at present, it is human from scope working channel entering mostly, and the open-close type forceps holder through seal wire control operation, the centre gripping area is little, hemostatic effect is poor, be difficult for cliping the tissue that needs the centre gripping, and current closed clamp is single-shot design, the release that a closed clamp can only be accomplished to the seal wire entering human body at every turn, if in the operation under the condition that needs a plurality of closed clamps, need extract old seal wire and insert new closed clamp and seal wire, so cycle is many times, it is comparatively inconvenient to use, and bring very big misery for the patient.

At present, most of ligation devices clinically used adopt rubber rings or elastic threads as ligation materials, after tissues needing to be ligated are sucked and introduced into the muzzle of the ligation device through negative pressure, the ligation materials are released through pull ropes and the like, the roots of the tissues needing to be ligated are tightened through automatic contraction of the rubber rings or manual tightening of the elastic threads, and finally the tissues needing to be ligated are subjected to ischemic necrosis and fall off. At present, the rubber ring is used for ligation, so that the tissue cannot be tightened to a zero gap, and when the tissue falls off, a large scar is possibly caused and then bleeding occurs; the ligation operation using elastic threads is complicated, and after the ligation is completed, the tissue cannot be continuously pressurized, so that the ligation effect is poor. The two ligation modes also have the problems of small ligation range, uncontrollable ligation area and the like in various clinical uses.

Disclosure of Invention

The invention aims to solve the technical problems that the existing closing clamp is small in clamping area and poor in hemostasis effect and can only be triggered by one shot, and provides a shape memory alloy closing clamp and a stacked multiple-shot closing clamp device which are used for clamping hemostasis of a mucous membrane layer wound in a digestive tract and ligation and excision of hyperplastic tissues.

The technical solution of the invention is as follows:

a shape memory alloy closing clip is made of titanium-nickel base shape memory alloy materials, and is characterized in that: a strip comprising a closure; the strip is formed by two multi-tooth sections and two arc line sections which are arranged in a staggered mode and connected end to end in sequence; the multi-tooth section is formed by at least two inner arc sections and at least two outer arc sections which are staggered and connected end to end in sequence; when the memory temperature is not reached, the two multi-tooth sections are separated from each other; upon reaching or exceeding the memory temperature, the two multi-tooth segments snap together.

Further, the top of each inner arc section is provided with a bulge, and the bulges face towards the outer arc section meshed with the bulges.

Further, the number of the outer arc sections of one multi-tooth section is equal to or one or two more than the number of the outer arc sections of the other multi-tooth section.

Further, when the memory temperature is not reached, the two multi-tooth sections are respectively positioned at two sides of the first virtual surface; the first virtual surface is a cylindrical surface or an elliptic cylindrical surface; when the first virtual surface is a cylindrical surface, the diameter of the first virtual surface is 6-18 mm; when the first virtual surface is an elliptic cylindrical surface, the major axis of the first virtual surface is 8-18 mm, and the minor axis of the first virtual surface is 6-15 mm; when the memory temperature is reached or exceeded, the two multi-tooth sections are both positioned on the same side of the second virtual surface; the second virtual surface is a cylindrical surface or an elliptic cylindrical surface; the distance between the inner arc section and the outer arc section meshed with the inner arc section is 0-3 mm.

Further, the memory temperature of the titanium-nickel-based shape memory alloy material is 33 +/-3 ℃; the number of the outer arc sections of the other multi-tooth section is 3, 4, 5, 6 or 8; the protrusions are sharp teeth, blunt sharp spikes or arc protrusions.

Meanwhile, the invention also provides a stacked multi-hair closed clip device adopting the shape memory alloy closed clip, which is characterized in that: comprises a hollow column-shaped release head which can be matched with the top end of a gastroscope/enteroscope/ligation device, a traction rope, at least two shape memory alloy closing clamps which do not reach the memory temperature and are stacked and sleeved on the outer side surface of the release head;

the middle part of the traction rope passes through the interior of the release head from the top of the release head downwards and is arranged at the tail end of the gastroscope/enteroscope/ligation device;

two ends of the traction rope respectively descend from the top of the release head along the outer side face of the release head, and rope knots are respectively arranged between two adjacent shape memory alloy closed clamps and below the lowermost square shape memory alloy closed clamp.

Furthermore, two axially arranged rope grooves are symmetrically arranged on the outer side surface of the release head; two ends of the traction rope respectively descend from the top of the release head along the two rope grooves; the number of the shape memory alloy closure clips is 3 to 6.

Further, the traction rope between two adjacent rope knots is wound in the same direction for half a circle between two corresponding shape memory alloy closing clamps.

Meanwhile, the invention also provides a stacked multi-hair closed clamp device adopting the shape memory alloy closed clamp, which is characterized in that: comprises a hollow column-shaped release head which can be matched with the top end of a gastroscope/enteroscope/ligation device, a traction rope, at least two shape memory alloy closing clamps which do not reach the memory temperature and are stacked and sleeved on the outer side surface of the release head; one end part of the traction rope passes through the interior of the release head from the top of the release head downwards and is arranged at the tail end of the gastroscope/enteroscope/ligation device; the other end of the traction rope respectively descends from the top of the release head along the outer side surface of the release head, and knots are respectively arranged between two adjacent shape memory alloy closed clamps and below the lowermost square shape memory alloy closed clamp.

Further, an axially arranged rope groove is arranged on the outer side surface of the release head;

the other end of the traction rope goes downwards from the top rope groove of the release head;

the number of the shape memory alloy closure clips is 3 to 6.

Meanwhile, the invention also provides a stacked multi-hair closed clamp device adopting the shape memory alloy closed clamp, which is characterized in that: comprises a hollow column-shaped release head which can be matched with the top end of a gastroscope/enteroscope/ligation device, a plurality of traction ropes, a plurality of shape memory alloy closing clamps which do not reach the memory temperature and are stacked and sleeved on the outer side surface of the release head; the traction ropes and the shape memory alloy closing clamps are the same in number; the middle parts of the plurality of traction ropes downwards penetrate through the inside of the release head from the top of the release head and are arranged at the tail end of the gastroscope/enteroscope/ligation device; two ends of the plurality of hauling ropes respectively descend from the top of the release head along the outer side surface of the release head, and knots are respectively arranged below the shape memory alloy closing clamps corresponding to the two ends of the hauling ropes.

Furthermore, two axially arranged rope grooves are symmetrically arranged on the outer side surface of the release head;

two end parts of the plurality of traction ropes respectively descend from the top of the release head along the two rope grooves;

the number of the shape memory alloy closure clips is 3 to 6.

Meanwhile, the invention also provides a stacked multi-hair closed clamp device adopting the shape memory alloy closed clamp, which is characterized in that: comprises a hollow column-shaped release head which can be matched with the top end of a gastroscope/enteroscope/ligation device, a plurality of traction ropes, a plurality of shape memory alloy closing clamps which do not reach the memory temperature and are stacked and sleeved on the outer side surface of the release head; the number of the traction ropes is the same as that of the shape memory alloy closing clamps; one end parts of the plurality of traction ropes downwards penetrate through the interior of the release head from the top of the release head and are arranged at the tail end of the gastroscope/enteroscope/ligation device; the other ends of the plurality of hauling ropes respectively descend from the top of the release head along the outer side surface of the release head, and knots are respectively arranged below the shape memory alloy closing clamps corresponding to the hauling ropes.

Further, an axially arranged rope groove is arranged on the outer side surface of the release head; the other end of the traction rope goes downwards from the top rope groove of the release head; the number of the shape memory alloy closure clips is 3 to 6.

The invention has the beneficial effects that:

1. the invention relates to a shape memory alloy closing clip and a stacked multiple closing clip device, which utilize the shape memory property of titanium-nickel memory alloy, are opened under the condition of lower than the temperature of a human body, are automatically closed under the condition of the temperature of the human body, and release the closing clip at a focus through a gastroscope system or an enteroscope system or a ligation device to automatically pressurize and close so as to achieve the purpose of treatment.

2. The single closed clamp is in a closed belt shape, is formed by connecting two arc line sections and two multi-tooth sections in a staggered mode end to end, and is quite simple in structure.

3. The single closing clamp is cut into the closed strip by the nickel-titanium shape memory alloy plate, and the closed strip can be used after being subjected to memory treatment, and the processing technology is simple.

4. According to the invention, through special design, a single closing clamp can be opened and sleeved on the hollow cylindrical release head, or a plurality of closing clamps are opened and then sequentially sleeved on the hollow cylindrical release head, so that a complete product combination is formed and can be sequentially released.

5. The device comprises a multi-shot closing clip with more than one shot, one shot can directly continue to release the next shot after being released, and no additional operation is needed in the middle.

6. The invention has simple operation process. When the invention is used for hemostasis of the alimentary canal or sealing of a mucosa injury part, the invention is sleeved on the top end of a gastroscope/enteroscope and reaches an affected part along with the gastroscope/enteroscope entering the alimentary canal. The tissue to be clamped is pulled in by a negative pressure suction or a grasping forceps, the closing clip is released on the pulled tissue, and the multi-tooth sections of the closing clip are closed in parallel under the action of the temperature of a human body, so that the tissue to be clamped is automatically pressurized and anastomosed. The peripheral tissue can be further pulled in according to the requirement, and more closing clips are released to carry out multi-point clip closing anastomosis. The invention is sleeved on the top end of a ligation device, enters through the anus, performs traction ligation on vein mass or mucosa tissue proliferated on an anal tube, draws in the tissue to be ligated through forms of negative pressure suction and the like, releases a closing clip on the drawn-in tissue, and under the action of the temperature of a human body, toothed arc sections of the closing clip are parallelly closed to complete automatic pressurization and anastomosis of the tissue to be ligated. The peripheral tissue can be further pulled in according to the requirement, and more closing clips are released to carry out multi-point clip closing anastomosis.

7. The invention falls off with the wound healing after about 10 days after the operation, and finally no foreign body exists in the body.

8. The size of the closure clip of the present invention can meet surgical requirements. If the size is too small, there may be no effect, and if the size is too large, a foreign body sensation may be generated in the patient.

Drawings

FIG. 1 is a schematic view of a shape memory alloy closure clip according to the present invention having a curved protrusion at or above a memory temperature;

FIG. 2 is a schematic diagram of a shape memory alloy closure clip according to the present invention having a pointed profile at or above the memory temperature;

FIG. 3 is a schematic perspective view of FIG. 2;

FIG. 4 is a schematic structural view of a shape memory alloy closure clip of the present invention having a less semicircular shape before deformation and a pointed profile protrusion to achieve or exceed a memory temperature;

FIG. 5 is a bottom view of FIG. 4;

FIG. 6 is a schematic structural view of a shape memory alloy closure clip of the present invention with a pointed profile protrusion prior to deformation, shown in a more or less circular shape, at or above the memory temperature;

FIG. 7 is a bottom view of FIG. 6, wherein B is a second virtual surface;

FIG. 8 is a schematic structural view of a shape memory alloy closure clip of the present invention having a semi-elliptical shape before deformation and a pointed profile of protrusion to achieve or exceed the memory temperature;

FIG. 9 is a bottom view of FIG. 8;

FIG. 10 is a schematic view of a shape memory alloy closure clip of the present invention having a shape of a long oval before deformation and a pointed protrusion to achieve or exceed the memory temperature;

FIG. 11 is a bottom view of FIG. 10;

FIG. 12 is a front view of a shape memory alloy closure clip of the present invention prior to deformation, in the form of a circle;

FIG. 13 is a top view of FIG. 12; a in the figure is a first virtual surface;

FIG. 14 is a top view of the shape memory alloy closure clip of the present invention prior to deformation in the form of an oval;

FIG. 15 is a perspective view of FIG. 12;

FIG. 16 is a schematic diagram of a stacked multiple closure clip device of the present invention formed by stacking five shape memory alloy closure clips protruding as sharp pointed tines on a hollow cylindrical release head;

FIG. 17 is a left side view of FIG. 16;

FIG. 18 is a top view of FIG. 16;

FIG. 19 is a schematic perspective view of FIG. 16;

FIG. 20 is a schematic diagram of a stacked multiple closure clip device of the present invention formed by stacking five blunt-tipped shape memory alloy closure clips on a hollow cylindrical release tip;

FIG. 21 is a left side view of FIG. 20;

FIG. 22 is a schematic representation of a single pull-cord initiated stacked multiple closure clip device of the present invention formed by two shape memory alloy closure clips stacked on a hollow cylindrical delivery head;

FIG. 23 is a schematic perspective view of FIG. 22;

FIG. 24 is a schematic diagram of a stacked multiple occlusion clip device of the present invention formed by two shape memory alloy occlusion clips stacked on a hollow cylindrical delivery head, initiated by a single pull cord and half-wound with the pull cord;

FIG. 25 is a schematic perspective view of FIG. 24;

FIG. 26 is a schematic diagram of a four pull cord double-ended stacked multiple closure clip device of the present invention formed by four shape memory alloy closure clips stacked on a hollow cylindrical release head;

FIG. 27 is a schematic structural view of a four-wire pull cord single-ended single-sided initiation stacked multiple closure clip device of the present invention formed by stacking four shape memory alloy closure clips onto a hollow cylindrical release head;

the pull cord and knot are exaggerated in fig. 22-27 to illustrate their location and configuration.

Description of reference numerals:

1-multi-tooth section, 11-inner arc section, 12-outer arc section, 2-arc section, 3-release head, 4-traction rope, 5-knot, 6-rope groove, 9-closing clip, A-first virtual surface and B-second virtual surface.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

1-15, a shape memory alloy closure clip in the present embodiment includes a closure strip made of a titanium nickel based shape memory alloy material; the strip is formed by two multi-tooth sections 1 and two arc line sections 2 which are staggered and connected end to end in sequence; in the embodiment, one multi-tooth section 1 is formed by six inner arc sections 11 and five outer arc sections 12 which are staggered and connected end to end in sequence, and the other multi-tooth section 1 is formed by seven inner arc sections 11 and six outer arc sections 12 which are staggered and connected end to end in sequence, in other embodiments, the number of the inner arc sections 11 is at least two, the number of the outer arc sections 12 of one multi-tooth section 1 is 3, 4, 5, 6 or 8, the number of the outer arc sections 12 of the other multi-tooth section 1 is equal to the number of the outer arc sections 12 of the multi-tooth section 1, or one or two more outer arc sections 12 are provided, and the number of the inner arc sections 11 and the number of the outer arc sections 12 can be specifically set according to actual conditions; when the memory temperature is not reached, the two multi-tooth sections 1 are separated from each other; when the memory temperature is reached or exceeded, the two multi-toothed segments 1 snap together.

When the memory temperature is not reached, the two multi-tooth sections 1 are respectively positioned at two sides of the first virtual surface A; the first virtual surface A is a cylindrical surface or an elliptic cylindrical surface; when the first virtual surface A is a cylindrical surface, the diameter of the first virtual surface A is 6-18 mm; when the first virtual surface A is an elliptic cylindrical surface, the major axis of the first virtual surface A is 8-18 mm, and the minor axis of the first virtual surface A is 6-15 mm; when the memory temperature is reached or exceeded, the two multi-tooth sections 1 are both positioned on the same side of the second virtual surface B; the second virtual surface B is a cylindrical surface or an elliptic cylindrical surface; the distance between the inner arc section 11 and the outer arc section 12 meshed with the inner arc section is 0-3 mm.

Every inner arc section 11 top is provided with the arch, and the arch all faces rather than the outer arc section 12 of interlock, and the arch can be sharp tooth profile sharp tooth, blunt shape spine or arc arch, selects blunt shape spine in this embodiment, when aiming at different focuses, chooses different archs for use to reach better effect.

The memory temperature of the titanium-nickel base shape memory alloy material is 33 +/-3 ℃;

as shown in fig. 16 to 21, this embodiment also provides a stacked multiple-series closure clip device using the aforementioned shape memory alloy closure clip, which includes a hollow cylindrical release head 3 capable of matching with the top end of the gastroscope/enteroscope/ligation device, a pull rope 4, five shape memory alloy closure clips which do not reach the memory temperature and are stacked and sleeved on the outer side surface of the release head 3, in fig. 16 to 19, the protrusions of the shape memory alloy closure clips are sharp pointed teeth, in fig. 20 to 21, the protrusions of the shape memory alloy closure clips are blunt pointed teeth, in other embodiments, 3 to 6 protrusions can be provided, and can be provided according to actual needs; the middle part of the traction rope 4 passes through the inside of the release head 3 from the top of the release head 3 downwards and is arranged at the tail end of the gastroscope/enteroscope/ligation device; in the embodiment, two axially arranged rope grooves 6 are symmetrically arranged on the outer side surface of the release head 3, and two end parts of the traction rope 4 respectively descend from the top of the release head 3 along the two rope grooves 6; in other embodiments, the rope groove 6 may not be provided, and at this time, the two ends of the pulling rope 4 respectively descend from the top of the release head 3 along the outer side surface of the release head 3; the hauling rope 4 is respectively arranged between two adjacent shape memory alloy closed clamps and below the lowermost square shape memory alloy closed clamp, knots 5 are arranged, and the hauling rope 4 between the two adjacent knots 5 is wound in the same direction between the two corresponding shape memory alloy closed clamps for half a circle.

As shown in fig. 22 to 25, the stacked multiple closure clip device using the aforementioned shape memory alloy closure clips includes a hollow cylindrical release head 3 capable of matching with the top end of a gastroscope/enteroscope/ligation device, a pull rope 4, two shape memory alloy closure clips which do not reach the memory temperature and are stacked and sleeved on the outer side surface of the release head 3, wherein the projections of the shape memory alloy closure clips are arc projections, and 3 to 6 shape memory alloy closure clips can be provided in other embodiments, and can be provided according to actual needs; one end part of the traction rope 4 passes through the inside of the release head 3 from the top of the release head 3 downwards and is arranged at the tail end of the gastroscope/enteroscope/ligation device; in the embodiment, the outer side surface of the release head 3 is provided with an axially arranged rope groove 6, and the other end part of the traction rope 4 descends from the rope groove 6 at the top of the release head 3; in other embodiments, the rope groove 6 may not be provided, and at this time, the other end portions of the pulling ropes 4 respectively descend from the top of the releasing head 3 along the outer side surface of the releasing head 3; the hauling rope 4 is respectively provided with a knot 5 between two adjacent shape memory alloy closed clamps and below the lowermost square shape memory alloy closed clamp.

As shown in fig. 26, the stacked multiple closed clip device using the aforementioned shape memory alloy closed clips includes a hollow cylindrical release head 3 capable of matching with the top end of a gastroscope/enteroscope/ligation device, four traction ropes 4, four shape memory alloy closed clips which do not reach the memory temperature and are stacked and sleeved on the outer side surface of the release head 3, wherein the protrusions of the shape memory alloy closed clips are arc-shaped protrusions, 3 to 6 protrusions can be provided in other embodiments, and the traction ropes 4 and the shape memory alloy closed clips are the same in number and can be provided according to actual needs; in the embodiment, two axially-arranged rope grooves 6 are symmetrically arranged on the outer side surface of the release head 3, the middle parts of four traction ropes 4 penetrate through the interior of the release head 3 downwards from the top of the release head 3 and are arranged at the tail end of a gastroscope/enteroscope/ligation device, two end parts of the four traction ropes 4 respectively descend from the top of the release head 3 along the two rope grooves 6, and rope knots 5 are respectively arranged below the shape memory alloy closing clamps corresponding to the two traction ropes; in other embodiments, the rope groove 6 may not be provided, in this case, two ends of the plurality of pulling ropes 4 respectively descend from the top of the releasing head 3 along the outer side surface of the releasing head 3, and the knots 5 are respectively provided below the corresponding shape memory alloy closing clips.

As shown in fig. 27, the stacked multiple closed clip device using the aforementioned shape memory alloy closed clips includes a hollow cylindrical release head 3 capable of matching with the top end of a gastroscope/enteroscope/ligation device, four traction ropes 4, four shape memory alloy closed clips which do not reach the memory temperature and are stacked and sleeved on the outer side surface of the release head 3, wherein the protrusions of the shape memory alloy closed clips are arc-shaped protrusions, 3 to 6 protrusions can be provided in other embodiments, and the traction ropes 4 and the shape memory alloy closed clips are the same in number and can be provided according to actual needs; in the embodiment, the outer side surface of the release head 3 is provided with a rope groove 6 which is axially arranged, one end parts of four traction ropes 4 downwards penetrate through the inside of the release head 3 from the top of the release head 3 and are arranged at the tail end of a gastroscope/enteroscope/ligation device, the other end parts of the four traction ropes 4 downwards descend from the rope groove 6 at the top of the release head 3, and rope knots 5 are respectively arranged below the shape memory alloy closing clips corresponding to the traction ropes; in other embodiments, the rope groove 6 may not be provided, in this case, one end portions of the plurality of pulling ropes 4 pass through the inside of the release head 3 from the top of the release head 3 downward and are arranged at the tail end of the gastroscope/enteroscope/ligation device, the other end portions of the plurality of pulling ropes 4 respectively descend from the top of the release head 3 along the outer side surface of the release head 3, and the knots 5 are respectively arranged below the corresponding shape memory alloy closing clips.

The invention relates to a shape memory alloy closing clip and a stacked multiple closing clip device, wherein a single closing clip 9 comprises a closed strip made of a titanium-nickel shape memory alloy material, and the strip is formed by two multi-tooth sections 1 and two arc sections 2 which are arranged in a staggered mode, staggered in sequence and connected end to end.

In the memory processing, it is required that: when the memory temperature is not reached, the two multi-tooth sections 1 and the two smooth arc sections are positioned on a circle, which is referred to a first virtual surface A, and the diameter of the circle is 6-18 mm; when the memory temperature is reached or exceeded, the two multi-tooth sections 1 are mutually parallel and close to complete the closing action.

In order to achieve the best operation effect, when the memory temperature is not reached, the two multi-tooth sections 1 and the two smooth arc sections 2 are positioned on one circumference and refer to a second virtual surface B, when the memory temperature is reached, the two multi-tooth sections 1 are mutually parallel and close, the distance is 0-3 mm, and 0.1-3 mm is preferred.

A tine-type closure clip or a blunt-type closure clip may be selected depending on the different characteristics of the tissue to be anastomosed.

When the single closing clip 9 does not reach the memory temperature, the two multi-tooth sections 1 and the two smooth arc sections are positioned on one circumference, and the same closing clips 9 can be stacked in sequence at the moment, so that the aim of releasing for multiple times is fulfilled.

A plurality of closed clamp 9 pile up in proper order on a hollow cylinder type release head 3, and there is grooving 6 release head 3 both sides, places the haulage rope 4 of having beaten knot 5 in advance in grooving 6, and knot 5 card is between two closed clamp 9 that pile up, can push out the closed clamp in proper order through pulling haulage rope 4.

The memory temperature of the titanium-nickel shape memory alloy is generally 33 +/-3 ℃.

The invention can be used for gastrointestinal endoscopic surgery. During operation, the closing clip 9 is clipped on mucosa or muscle tissue to be closed, and is deformed under the action of body temperature, the multi-tooth section 1 of the closing clip 9 and the sharp teeth on the multi-tooth section are occluded together to automatically pressurize the tissue to be closed, so that the wound tissue can be healed.

The invention can also be used for hemorrhoid excision operation. During operation, the closing clamp 9 is clamped at the root of internal hemorrhoid tissue to be cut off and deforms under the action of body temperature, the multi-tooth section 1 of the closing clamp 9 and the sharp teeth on the multi-tooth section are occluded to jointly and automatically pressurize the tissue to be closed, the tissue on one side with good blood circulation is healed while pressurizing, the tissue on the other side is subjected to ischemic necrosis, and finally the closing clamp falls off, so that the aims of no wound and no foreign body left in the body are fulfilled.

Occlusion means that the inner arc segment 11 and the corresponding outer arc segment 12 coincide.

Claims

1. A shape memory alloy closure clip is made of titanium-nickel base shape memory alloy material, which is characterized in that:

a strip comprising a closure;

the strip is formed by two multi-tooth sections (1) and two arc line sections (2) which are arranged in a staggered mode and connected end to end in sequence;

the multi-tooth section (1) is formed by at least two inner arc sections (11) and at least two outer arc sections (12) which are staggered and sequentially connected end to end;

when the memory temperature is not reached, the two multi-tooth sections (1) are separated from each other;

when the memory temperature is reached or exceeded, the two multi-tooth segments (1) are snapped together.

2. The shape memory alloy closure clip of claim 1, wherein:

the top of each inner arc section (11) is provided with a bulge, and the bulges face to the outer arc section (12) meshed with the bulges.

3. The shape memory alloy closure clip of claim 1 or 2, wherein:

the number of the outer arc sections (12) of one multi-tooth section (1) is equal to or one or two more than the number of the outer arc sections (12) of the other multi-tooth section (1).

4. The shape memory alloy closure clip of claim 3, wherein:

when the memory temperature is not reached, the two multi-tooth sections (1) are respectively positioned at two sides of the first virtual surface (A); the first virtual surface (A) is a cylindrical surface or an elliptic cylindrical surface; when the first virtual surface (A) is a cylindrical surface, the diameter of the first virtual surface is 6-18 mm; when the first virtual surface (A) is an elliptic cylindrical surface, the major axis of the first virtual surface (A) is 8-18 mm, and the minor axis of the first virtual surface (A) is 6-15 mm;

when the memory temperature is reached or exceeded, the two multi-tooth sections (1) are both positioned on the same side of the second virtual surface (B); the second virtual surface (B) is a cylindrical surface or an elliptic cylindrical surface;

the distance between the inner arc section (11) and the outer arc section (12) meshed with the inner arc section is 0-3 mm.

5. The shape memory alloy closure clip of claim 3, wherein:

the memory temperature of the titanium-nickel base shape memory alloy material is 33 +/-3 ℃; the number of outer arc sections (12) of the other multi-tooth section (1) is 3, 4, 5, 6 or 8; the protrusions are sharp teeth, blunt sharp spikes or arc protrusions.

6. A stacked multi-hair closure clip device employing a shape memory alloy closure clip according to any of claims 1-5, wherein:

comprises a hollow cylindrical release head (3) which can be matched with the top end of a gastroscope/enteroscope/ligation device, at least two shape memory alloy closing clamps which are stacked and sleeved on the outer side surface of the release head (3) and have a traction rope (4) which does not reach the memory temperature;

the middle part of the traction rope (4) downwards passes through the inside of the release head (3) from the top of the release head (3) and is arranged at the tail end of the gastroscope/enteroscope/ligation device;

two ends of the traction rope (4) respectively move downwards from the top of the release head (3) along the outer side surface of the release head (3), and knots (5) are respectively arranged between two adjacent shape memory alloy closed clamps and below the lowermost square shape memory alloy closed clamp on the traction rope (4).

7. The stacked multiple closure clip device of claim 6, wherein:

two axially arranged rope grooves (6) are symmetrically arranged on the outer side surface of the release head (3);

two ends of the traction rope (4) respectively descend from the top of the release head (3) along two rope grooves (6);

the number of the shape memory alloy closure clips is 3 to 6.

8. The stacked multi-hair closure clip device of claim 6 or 7, wherein:

the traction rope (4) between two adjacent knots (5) is wound into a half circle between two corresponding shape memory alloy closed clamps in the same direction.

9. A stacked multi-hair closure clip device employing a shape memory alloy closure clip according to any of claims 1-5, wherein:

one end part of the traction rope (4) downwards penetrates through the interior of the release head (3) from the top of the release head (3) and is arranged at the tail end of the gastroscope/enteroscope/ligation device;

the other end of the traction rope (4) respectively descends from the top of the release head (3) along the outer side surface of the release head (3), and knots (5) are respectively arranged between two adjacent shape memory alloy closed clamps and below the lowermost square shape memory alloy closed clamp.

10. The stacked multi-hair closure clip device of claim 9, wherein:

the outer side surface of the release head (3) is provided with a rope groove (6) which is axially arranged;

the other end of the traction rope (4) descends from a top rope groove (6) of the release head (3);

the number of the shape memory alloy closure clips is 3 to 6.

11. A stacked multi-hair closure clip device employing a shape memory alloy closure clip according to any of claims 1-5, wherein:

comprises a hollow column-shaped release head (3) which can be matched with the top end of a gastroscope/enteroscope/ligation device, a plurality of traction ropes (4) which do not reach the memory temperature and a plurality of shape memory alloy closing clamps which are stacked and sleeved on the outer side surface of the release head (3); the traction ropes (4) and the shape memory alloy closing clamps are the same in number;

the middle parts of the plurality of traction ropes (4) downwards penetrate through the inside of the release head (3) from the top of the release head (3) and are arranged at the tail end of the gastroscope/enteroscope/ligation device;

two ends of the plurality of hauling ropes (4) respectively descend from the top of the releasing head (3) along the outer side surface of the releasing head (3), and knots (5) are respectively arranged below the shape memory alloy closing clamps corresponding to the two ends.

12. The stacked multiple closure clip device of claim 11, wherein:

two end parts of the plurality of traction ropes (4) respectively descend from the top of the release head (3) along the two rope grooves (6);

the number of the shape memory alloy closure clips is 3 to 6.

13. A stacked multi-hair closure clip device employing a shape memory alloy closure clip according to any of claims 1-5, wherein:

comprises a hollow column-shaped release head (3) which can be matched with the top end of a gastroscope/enteroscope/ligation device, a plurality of traction ropes (4) which do not reach the memory temperature and a plurality of shape memory alloy closing clamps which are stacked and sleeved on the outer side surface of the release head (3); the number of the traction ropes (4) is the same as that of the shape memory alloy closing clamps;

one end parts of the plurality of traction ropes (4) downwards penetrate through the inside of the release head (3) from the top of the release head (3) and are arranged at the tail end of the gastroscope/enteroscope/ligation device;

the other ends of the plurality of hauling ropes (4) respectively descend from the top of the releasing head (3) along the outer side surface of the releasing head (3), and knots (5) are respectively arranged below the shape memory alloy closing clamps corresponding to the other ends of the hauling ropes (4).

14. The stacked multi-hair closure clip device of claim 13, wherein:

the number of the shape memory alloy closure clips is 3 to 6.