CN111714161A

CN111714161A - Sealing clamp

Info

Publication number: CN111714161A
Application number: CN201910218304.8A
Authority: CN
Inventors: 周晓军; 谢晨光
Original assignee: Beijing Lingjian Medical Technology Co ltd
Current assignee: Beijing Lingjian Medical Technology Co ltd
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2020-09-29

Abstract

The invention discloses a closed clamp which comprises a first clamp arm, a second clamp arm, a far-end elastic clamp and a near-end elastic clamp, wherein the first clamp arm and the second clamp arm are oppositely arranged, the far-end elastic clamp and the near-end elastic clamp are both arranged along the length direction of the first clamp arm and the second clamp arm, the two elastic clamp arms of the far-end elastic clamp are respectively clamped at the far ends of the outer side surfaces of the first clamp arm and the second clamp arm, and the two elastic clamp arms of the near-end elastic clamp are respectively clamped at the near ends of the outer side surfaces of the first clamp arm and the second clamp arm. Its purpose is in order to provide a small, the convenient closure of operation and press from both sides.

Description

Sealing clamp

Technical Field

The invention relates to a medical instrument, in particular to an instrument for sealing human tissues in minimally invasive surgery.

Background

Clinically, it is often desirable to seal the target tissue to treat or prevent a disease, for example, sealing the left atrial appendage to prevent stroke, clamping the mitral valve to treat mitral regurgitation, delivering the closure clip into the body using a specialized delivery device and opening it, capturing the target tissue, such as the base of the left atrial appendage, and the mitral valve leaflets, and trapping the target tissue between the two arms of the closure clip to complete the seal. The sealing clamp is provided with a spring arm, the sealing clamp can be closed under the action of the spring arm, and the spring arm is perpendicular to the clamping arm when the existing sealing clamp is closed, so that the sealing clamp is overlarge in size and not beneficial to minimally invasive surgery.

Disclosure of Invention

The invention aims to provide a sealing clamp which is small in size and convenient to operate.

The closed clamp comprises a first clamping arm, a second clamping arm, a far-end elastic clamp and a near-end elastic clamp, wherein the first clamping arm and the second clamping arm are arranged oppositely, the far-end elastic clamp and the near-end elastic clamp are arranged along the length direction of the first clamping arm and the second clamping arm, the two elastic clamping arms of the far-end elastic clamp are respectively clamped at the far ends of the outer side surfaces of the first clamping arm and the second clamping arm, and the two elastic clamping arms of the near-end elastic clamp are respectively clamped at the near ends of the outer side surfaces of the first clamping arm and the second clamping arm.

According to the closed clamp, a first limiting through hole is formed in the near end of the first clamping arm, a second limiting through hole is formed in the near end of the second clamping arm, one elastic clamping arm of the far-end elastic clamp is clamped at the far end of the outer side face of the first clamping arm, the other elastic clamping arm of the far-end elastic clamp is clamped at the far end of the outer side face of the second clamping arm after penetrating through the first limiting through hole and the second limiting through hole, one elastic clamping arm of the near-end elastic clamp is clamped at the near end of the outer side face of the first clamping arm, and the other elastic clamping arm of the near-end elastic clamp is clamped at the near end of the outer side face of the second clamping arm after penetrating through the first limiting through hole and.

The closed clamp comprises a first clamping arm, a second clamping arm, a third clamping arm, a fourth clamping arm, a fifth clamping arm, a sixth clamping arm.

The invention discloses a closed clamp, wherein four thin walls are respectively arranged on the outer side surfaces of a first clamping arm and a second clamping arm, the four thin walls are respectively a first thin wall, a second thin wall, a third thin wall and a fourth thin wall, the thin walls are arranged along the length direction of the first clamping arm and the second clamping arm, the first thin wall and the second thin wall form a first channel, the second thin wall and the third thin wall form a second channel, the third thin wall and the fourth thin wall form a third channel, the first channel of the first clamping arm corresponds to the first channel of the second clamping arm up and down, the second channel of the first clamping arm corresponds to the second channel of the second clamping arm up and down, the third channel of the first clamping arm corresponds to the third channel of the second clamping arm up and down, the far-end elastic clamps are two, two elastic clamping arms of one far-end elastic clamp are respectively positioned in the first channels of the first clamping arm and the second clamping arm, two elastic clamping arms of the other far-end elastic clamp are respectively positioned in third channels of the first clamping arm and the second clamping arm, the near-end elastic clamp is one elastic clamping arm, and the two elastic clamping arms of the near-end elastic clamp are respectively positioned in second channels of the first clamping arm and the second clamping arm.

According to the closed clamp, the joint of the two elastic clamping arms of the far-end elastic clamp is U-shaped, the joint of the two elastic clamping arms of the near-end elastic clamp is also U-shaped, the ends of the two elastic clamping arms of the far-end elastic clamp are respectively connected with a limiting arm, and the ends of the two elastic clamping arms of the near-end elastic clamp are also respectively connected with a limiting arm.

According to the closed clamp, two elastic clamping arms of the far-end elastic clamp are respectively fixed on a first clamping arm and a second clamping arm through flexible binding pieces, and two elastic clamping arms of the near-end elastic clamp are also respectively fixed on the first clamping arm and the second clamping arm through flexible binding pieces.

According to the closed clamp, a far-end fixing plate and a near-end fixing plate are arranged on the thin wall of a first clamping arm, a far-end fixing plate and a near-end fixing plate are arranged on the thin wall of a second clamping arm, a far-end fixing hole is formed in the far-end fixing plate, a near-end fixing hole is formed in the near-end fixing plate, flexible binding pieces are inserted into the far-end fixing hole and the near-end fixing hole respectively, the flexible binding pieces in the far-end fixing holes fix elastic clamping arms of the far-end elastic clamp to the first clamping arm and the second clamping arm, and the flexible binding pieces in the near-end fixing holes fix the elastic clamping arms of the near-end elastic clamp to the first clamping arm and the second.

According to the closed clamp, two elastic clamping arms of the far-end elastic clamp are respectively fixed on a first clamping arm and a second clamping arm through pin shafts, and two elastic clamping arms of the near-end elastic clamp are also respectively fixed on the first clamping arm and the second clamping arm through pin shafts.

According to the closed clamp, a far end fixing plate and a near end fixing plate are arranged on the thin wall of a first clamping arm, a far end fixing plate and a near end fixing plate are arranged on the thin wall of a second clamping arm, a far end fixing hole is formed in the far end fixing plate, a near end fixing hole is formed in the near end fixing plate, pin shafts are arranged in the far end fixing hole and the near end fixing hole, an elastic clamping arm of a far end elastic clamp is fixed on the first clamping arm and the second clamping arm through the pin shaft in the far end fixing hole, and the elastic clamping arm of the near end elastic clamp is fixed on the first clamping arm and the second clamping arm through the pin shaft in the near end fixing hole.

According to the closed clamp, the first limiting through holes comprise at least two mutually independent first sub-through holes, the number of the first sub-through holes is the same as that of the far-end elastic clamps and the near-end elastic clamps passing through the first limiting through holes, the second limiting through holes comprise at least two mutually independent second sub-through holes, and the number of the second sub-through holes is the same as that of the far-end elastic clamps and the near-end elastic clamps passing through the second limiting through holes.

The far-end elastic clamp and the near-end elastic clamp in the closed clamp are both arranged along the length direction of the first clamping arm and the second clamping arm, two elastic clamping arms of the far-end elastic clamp are respectively clamped at the far ends of the outer side surfaces of the first clamping arm and the second clamping arm, and two elastic clamping arms of the near-end elastic clamp are respectively clamped at the near ends of the outer side surfaces of the first clamping arm and the second clamping arm. Because distal end elastic clamp and near-end elastic clamp all arrange along the length direction of first arm lock and second arm lock, make the volume of whole closed clamp littleer, it is more convenient to operate.

The invention will be further explained with reference to the drawings.

Drawings

FIG. 1 is a schematic structural view of a first embodiment of a closure clip of the present invention;

FIG. 2 is a view showing a first embodiment of a closure clip according to the present invention in use;

FIG. 3 is a schematic structural view of a second embodiment of a closure clip of the present invention;

FIG. 4 is a first view of a second embodiment of a closure clip of the present invention in a first use configuration;

FIG. 5 is a second state diagram illustrating the use of a second embodiment of the enclosure clamp of the present invention;

FIG. 6 is a front view of a first embodiment of the first/second clamping arm of the enclosure clamp of the present invention;

FIG. 7 is a top view of a first embodiment of the first/second clamping arms of the enclosure clamp of the present invention;

FIG. 8 is a left side view of a first arm/second arm embodiment of the closure clip of the present invention;

FIG. 9 is a bottom view of a first embodiment of the first/second clamping arms of the enclosure clamp of the present invention;

figure 10 is a front view of a second embodiment of the first/second clamping arms of the enclosure clamp of the present invention;

figure 11 is a top view of a second embodiment of the first/second clamping arms of the closure clip of the present invention;

figure 12 is a left side view of a second embodiment of the first/second clamping arms of the closure clip of the present invention;

FIG. 13 is a bottom view of a second embodiment of the first/second clamping arms of the enclosure clamp of the present invention;

figure 14 is a perspective view of a second embodiment of the first/second clamping arms of the enclosure clamp of the present invention;

figure 15 is a front view of a third embodiment of the first/second clamping arms of the closure clip of the present invention;

figure 16 is a top view of a third embodiment of the first/second clamping arms of the closure clip of the present invention;

figure 17 is a bottom view of a third embodiment of the first/second clamping arms of the closure clip of the present invention;

figure 18 is a left side view of a third embodiment of the first/second clamping arms of the closure clip of the present invention;

figure 19 is a perspective view of a third embodiment of the first/second clamping arms of the closure clip of the present invention;

FIG. 20 is a schematic view of a first embodiment of a distal spring clip of the enclosure clip of the present invention;

FIG. 21 is a schematic structural view of a second embodiment of a distal spring clip of the enclosure clip of the present invention;

FIG. 22 is a schematic structural view of a third embodiment of a distal spring clip of the enclosure clip of the present invention;

FIG. 23 is a schematic structural view of a fourth embodiment of a distal spring clip of the enclosure clip of the present invention;

FIG. 24 is a schematic structural view of a fifth embodiment of a distal spring clip of the enclosure clip of the present invention;

FIG. 25 is a schematic structural view of a sixth embodiment of a distal spring clip in a closure clip according to the present invention;

FIG. 26 is a schematic diagram of a seventh embodiment of a distal spring clip in a closure clip according to the present invention;

FIG. 27 is a schematic view of an eighth embodiment of a distal spring clip of the closure clip of the present invention;

FIG. 28 is a schematic structural view of a ninth embodiment of a distal spring clip in a closure clip according to the present invention;

FIG. 29 is a schematic view of a first embodiment of a proximal spring clip of the closure clip of the present invention;

FIG. 30 is a schematic structural view of a second embodiment of a proximal spring clip of the closure clip of the present invention;

FIG. 31 is a schematic structural view of a third embodiment of a proximal spring clip of the closure clip of the present invention;

FIG. 32 is a schematic structural view of a fourth embodiment of a proximal spring clip of the closure clip of the present invention;

FIG. 33 is a schematic structural view of a fifth embodiment of a proximal spring clip of the closure clip of the present invention;

FIG. 34 is a schematic structural view of a sixth embodiment of a proximal spring clip in a closure clip according to the present invention;

FIG. 35 is a schematic structural view of a seventh embodiment of a proximal spring clip of the closure clip of the present invention;

FIG. 36 is a schematic structural view of an eighth embodiment of a proximal spring clip in a closure clip according to the present invention;

FIG. 37 is a schematic view of a proximal spring clip embodiment nine of a closure clip of the present invention.

Detailed Description

Example one

As shown in fig. 1 and fig. 2, the closed clamp of the present invention includes a first clamping arm 1, a second clamping arm 2, a distal elastic clamp 3 and a proximal elastic clamp 4, wherein the first clamping arm 1 and the second clamping arm 2 are disposed oppositely, the distal elastic clamp 3 and the proximal elastic clamp 4 are both disposed along the length direction of the first clamping arm 1 and the second clamping arm 2, two elastic clamping arms of the distal elastic clamp 3 are respectively clamped at the distal ends of the outer sides of the first clamping arm 1 and the second clamping arm 2, and two elastic clamping arms of the proximal elastic clamp 4 are respectively clamped at the proximal ends of the outer sides of the first clamping arm 1 and the second clamping arm 2. The inner side surfaces of the first clamping arm 1 and the second clamping arm 2 are clamping and closing surfaces 5.

As shown in fig. 6, and with reference to fig. 7, 8 and 9, there is shown a schematic structural view of a first embodiment of a first clamping arm 1/a second clamping arm 2 in the sealing clamp of the present invention, where the first clamping arm 1 and the second clamping arm 2 have the same structure, and both the first clamping arm and the second clamping arm are elongated. Two opposite surfaces of the first clamping arm 1 and the second clamping arm 2 are clamping surfaces 5, the clamping surfaces 5 of the first clamping arm 1 are cambered surfaces protruding towards the second clamping arm 2, and the clamping surfaces 5 of the second clamping arm 2 are cambered surfaces protruding towards the first clamping arm 1. The near-end of first arm lock 1 is equipped with first spacing through-hole 6, the near-end of second arm lock 2 is equipped with the spacing through-hole of second, distal end elasticity press from both sides 3 an elasticity arm lock centre gripping in the lateral surface distal end of first arm lock 1, another elasticity arm lock that distal end elasticity pressed from both sides 3 pass behind first spacing through-hole 6 and the spacing through-hole of second centre gripping in the lateral surface distal end of second arm lock 2, an elasticity arm lock centre gripping of near-end elasticity clamp 4 in the lateral surface near-end of first arm lock 1, another elasticity arm lock that near-end elasticity pressed from both sides 4 pass behind first spacing through-hole 6 and the spacing through-hole of second centre gripping in the lateral surface near-end of second arm lock 2.

For the stable structure of closed clamp, be provided with spacing piece 7 between the near-end of first spacing through-hole 6 and first arm lock 1, this spacing piece 7 can be with first arm lock 1 fixed connection, also can be as an organic whole structure with first arm lock 1, can also be detachable connections with first arm lock 1, when the quantity of first spacing through-hole 6 was one, spacing piece 7 quantity between first spacing through-hole 6 and the near-end of first arm lock 1 also was one. A detachable limiting piece 7 is also arranged between the second limiting through hole and the near-end of the second clamping arm 2, and the number of the limiting pieces 7 between the second limiting through hole and the near-end of the second clamping arm 2 is also one. When the limiting piece 7 is fixedly connected with or integrated with the first clamping arm 1, taking the installation of the distal elastic clamp 3 as an example for illustration, one elastic clamping arm of the distal elastic clamp 3 is clamped at the distal end of the outer side surface of the first clamping arm 1, the other elastic clamping arm of the distal elastic clamp 3 is clamped at the distal end of the outer side surface of the second clamping arm 2 after passing through the first limiting through hole 6 and the second limiting through hole, and the installation mode of the proximal elastic clamp 4 is the same as that of the distal elastic clamp 3. When spacing piece 7 and first arm lock 1 are detachable connections, dismantle spacing piece 7, can conveniently install distal end elastic clamp 3 or near-end elastic clamp 4 in place, later with spacing piece 7 installation, it is simple and convenient to install. When the number of the first limiting through holes 6 and the second limiting through holes is one, the far-end elastic clamp 3 and the near-end elastic clamp 4 simultaneously penetrate through one first limiting through hole 6 and one second limiting through hole.

Distal end elastic clamp 3 centre gripping is in the distal end of first arm lock 1 and second arm lock 2, proximal end elastic clamp 4 centre gripping is in the proximal end of first arm lock 1 and second arm lock 2, distal end elastic clamp 3 continuously provides distal end closing force, proximal end elastic clamp 4 continuously provides proximal end closing force, the proximal end and the distal end of first arm lock 1 and second arm lock 2 can be closed simultaneously, even closing force between the clamping closure face 5 of first arm lock 1 and second arm lock 2 has been guaranteed, thereby close the tissue between the clamping closure face 5, the closed integrality of the clamped tissue has been guaranteed.

As shown in fig. 6 and in combination with fig. 7, 8 and 9, four thin walls are respectively disposed on the outer side surfaces of the first clamping arm 1 and the second clamping arm 2, the four thin walls are respectively a first thin wall 8, a second thin wall 9, a third thin wall 10 and a fourth thin wall 11, and the thin walls are arranged along the length direction of the first clamping arm 1 and the second clamping arm 2. In order to reduce the weight of the thin wall, the thin wall adopts a hollow structure. The first thin wall 8 and the second thin wall 9 constitute a first channel, the second thin wall 9 and the third thin wall 10 constitute a second channel, the third thin wall 10 and the fourth thin wall 11 form a third channel, the first channel of the first clamping arm 1 is vertically corresponding to the first channel of the second clamping arm 2, the second channel of the first clamping arm 1 is vertically corresponding to the second channel of the second clamping arm 2, the third channel of the first clamping arm 1 is vertically corresponding to the third channel of the second clamping arm 2, the number of the far-end elastic clamps 3 is two, two elastic clamping arms of one far-end elastic clamp 3 are respectively positioned in first channels of the first clamping arm 1 and the second clamping arm 2, two elastic clamping arms of the other far-end elastic clamp 3 are respectively positioned in third channels of the first clamping arm 1 and the second clamping arm 2, the number of the near-end elastic clamps 4 is one, and the two elastic clamping arms of the near-end elastic clamps 4 are respectively positioned in the second channels of the first clamping arm 1 and the second clamping arm 2.

Two elastic clamping arms of the far-end elastic clamp 3 are respectively fixed on the first clamping arm 1 and the second clamping arm 2 through the flexible binding piece 12, and two elastic clamping arms of the near-end elastic clamp 4 are also respectively fixed on the first clamping arm 1 and the second clamping arm 2 through the flexible binding piece 12. The specific fixing mode is as follows: all be equipped with distal end fixed plate 13 and near-end fixed plate 14 on the thin wall of first arm lock 1, all be equipped with distal end fixed plate 13 and near-end fixed plate 14 on the thin wall of second arm lock 2, be equipped with distal end fixed orifices 15 on the distal end fixed plate 13, be equipped with near-end fixed orifices 16 on the near-end fixed plate 14, all alternate in distal end fixed orifices 15 and the near-end fixed orifices 16 flexible binding piece 12, flexible binding piece 12 that is located distal end fixed orifices 15 is fixed in first arm lock 1 and second arm lock 2 with the elasticity arm lock of distal end elasticity clamp 3 on, and flexible binding piece 12 that is located near-end fixed orifices 16 is fixed in on first arm lock 1 and second arm lock 2 with the elasticity arm lock of near-end elasticity clamp 4.

As shown in fig. 10, and shown in fig. 11, 12, 13 and 14, there is shown a schematic structural view of a second embodiment of the first clamping arm 1/second clamping arm 2 in the closed clamp of the present invention, which is different from the first embodiment of the first clamping arm 1/second clamping arm 2 in that: first spacing through-hole 6 includes two at least mutually independent first branch through-holes 17, the quantity of first branch through-hole 17 is the same with the quantity that the distal end elasticity that passes through first spacing through-hole 6 pressed from both sides 3 and near-end elasticity and press from both sides 4, the spacing through-hole of second includes two at least mutually independent second branch through-holes, the quantity that the second divides the through-hole is the same with the quantity that the distal end elasticity that passes through the spacing through-hole of second pressed from both sides 3 and near-end elasticity and press from both sides 4. In this embodiment, the first branch through hole 17 and the second branch through hole are all set to be three, correspondingly, the spacing piece 7 that sets up between the proximal end of first spacing through hole 6 and first arm lock 1 is also three, and the spacing piece 7 that sets up between the proximal end of second spacing through hole and second arm lock 2 is also three. The three first branch through holes 17 are sequentially arranged in the first channel, the second channel and the third channel of the first clamping arm 1, and the three second branch through holes are sequentially arranged in the first channel, the second channel and the third channel of the second clamping arm 2. The clamping and closing surface 5 of the first clamping arm 1 is three connected cambered surfaces protruding towards the direction of the second clamping arm 2, and the clamping and closing surface 5 of the second clamping arm 2 is also three connected cambered surfaces protruding towards the direction of the first clamping arm 1. Among the three connected cambered surfaces, the height of the cambered surface in the middle is higher than the protruding heights of the cambered surfaces on the two sides. The three connected cambered surfaces are sequentially positioned in a first channel, a second channel and a third channel of the first clamping arm 1/the second clamping arm 2.

As shown in fig. 15, and shown in fig. 16, 17, 18 and 19, there is shown a schematic structural view of a third embodiment of the first clamping arm 1/second clamping arm 2 in the closed clamp of the present invention, which is different from the second embodiment of the first clamping arm 1/second clamping arm 2 in that: the outer side surfaces of the first clamping arm 1 and the second clamping arm 2 are respectively provided with three thin walls, and the three thin walls are respectively a first thin wall 8, a second thin wall 9 and a third thin wall 10. In order to reduce the weight of the thin wall, the thin wall adopts a hollow structure. The thin wall is arranged along the length direction of first arm lock 1 and second arm lock 2, first thin wall 8 and second thin wall 9 constitute first passageway, second thin wall 9 and third thin wall 10 constitute the second passageway, first passageway of first arm lock 1 corresponds from top to bottom with the first passageway of second arm lock 2, second passageway of first arm lock 1 corresponds from top to bottom with the second passageway of second arm lock 2, distal end elasticity presss from both sides 3 and near-end elasticity and presss from both sides 4 and all establishes to one, two elasticity arm locks that distal end elasticity pressed from both sides 3 are located the first passageway of first arm lock 1 and second arm lock 2 respectively, two elasticity arm locks that near-end elasticity pressed from both sides 4 are located the second passageway of first arm lock 1 and second arm lock 2 respectively. The first limiting through hole 6 comprises two mutually independent first sub-through holes 17, the second limiting through hole comprises two mutually independent second sub-through holes, correspondingly, the number of the limiting pieces 7 arranged between the first limiting through hole 6 and the near-end of the first clamping arm 1 is two, and the number of the limiting pieces 7 arranged between the second limiting through hole and the near-end of the second clamping arm 2 is two. The two first branch through holes 17 are sequentially arranged in the first channel and the second channel of the first clamping arm 1, and the two second branch through holes are sequentially arranged in the first channel and the second channel of the second clamping arm 2. The clamping surfaces 5 of the first clamping arm 1 and the second clamping arm 2 are both cambered surfaces.

As shown in fig. 20, in the first embodiment of the distal elastic clip 3, the joint of the two elastic clip arms 301 is U-shaped, and the ends of the two elastic clip arms 301 of the distal elastic clip 3 are respectively connected with a limiting arm 302. The limiting arm 302 and the elastic clamping arm 301 are in arc transition connection, and the limiting arm 302 bends outwards. The elastic clamping arm 301 and the limiting arm 302 can be coplanar, and when the elastic clamping arm and the limiting arm are coplanar, the occupied space of the distal elastic clamp 3 can be reduced, so that the volumes of the first clamping arm 1 and the second clamping arm 2 are reduced.

As shown in fig. 21, a second embodiment of the distal elastic clip 3 is shown, which is different from the first embodiment in that: the ends of the elastic clamping arms 301 are not connected with the limiting arms.

As shown in fig. 22, a third embodiment of the distal elastic clip 3 is shown, which is different from the first embodiment in that: the arm 302 is bent outward to form a fixing hole 303.

As shown in fig. 23, a fourth embodiment of the distal elastic clip 3 is shown, which is different from the third embodiment in that: the retainer arm 302 is bent outward half a turn to form a securing hole 303.

As shown in fig. 24, in the fifth embodiment of the distal elastic clip 3, the limiting arm 302 is bent outward to form a fixing hole 303, and an acute angle is formed between the limiting arm 302 and the elastic clip arm 301, i.e. the acute angle is the fixing hole 303.

As shown in fig. 25, a sixth embodiment of the distal spring clip 3 is shown, which differs from the fifth embodiment in that: the acute angle formed between the limiting arm 302 and the elastic clamping arm 301 is smaller.

As shown in fig. 26, which shows a seventh embodiment of the distal elastic clip 3, the limiting arm 302 is bent twice, and the limiting arm 302 is integrally S-shaped, i.e. bent outward and toward the proximal direction to form a fixing hole 303, and then bent toward the distal end.

As shown in fig. 27, there is shown an eighth embodiment of the distal elastic clip 3, which is different from the fifth embodiment in that: one of the stop arms 302 is bent a second time distally.

As shown in fig. 28, there is shown a ninth embodiment of the distal elastic clip 3, which is different from the seventh embodiment in that: one of the stop arms 302 is bent only once in the proximal-lateral direction.

As shown in fig. 29, in the first embodiment of the proximal elastic clamp 4, the joint of the two elastic clamping arms 401 is U-shaped, and the ends of the two elastic clamping arms 401 of the proximal elastic clamp 4 are respectively connected with a limiting arm 402. The limiting arm 402 is in arc transition connection with the elastic clamping arm 401, and the limiting arm 402 bends outwards. The elastic clamping arm 401 and the limiting arm 402 can be coplanar, and when the elastic clamping arm 401 and the limiting arm 402 are coplanar, the occupied space of the proximal elastic clamp 4 can be reduced, so that the volumes of the first clamping arm 1 and the second clamping arm 2 are reduced.

As shown in fig. 30, a second embodiment of the proximal spring clip 4 is shown, which differs from the first embodiment in that: the ends of the elastic clamping arms 401 are not connected with limiting arms.

As shown in fig. 31, a third embodiment of the proximal spring clip 4 is shown, which is different from the first embodiment in that: the arm 402 is bent outward to form a fixing hole 403.

As shown in fig. 32, a fourth embodiment of the proximal spring clip 4 is shown, which differs from the third embodiment in that: the stopper arm 402 is bent outward half a turn to form a fixing hole 403.

As shown in fig. 33, which shows a fifth embodiment of the proximal elastic clip 4, the limiting arm 402 is bent outward to form a fixing hole 403, and an acute angle is formed between the limiting arm 402 and the elastic clip arm 401, i.e. the acute angle is the fixing hole 403.

As shown in fig. 34, a sixth embodiment of the proximal spring clip 4 is shown, which differs from the fifth embodiment in that: the acute angle formed between the spacing arm 402 and the resilient clip arm 401 is smaller.

As shown in fig. 35, which shows a seventh embodiment of the proximal elastic clip 4, the limiting arm 402 is bent twice, and the limiting arm 402 is integrally S-shaped, i.e. bent outward in the proximal direction to form the fixing hole 403, and then bent outward in the distal direction.

As shown in fig. 36, an eighth embodiment of the proximal spring clip 4 is shown, which differs from the fifth embodiment in that: one of the stop arms 402 is bent a second time distally.

As shown in fig. 37, a ninth embodiment of the proximal spring clip 4 is shown, which differs from the seventh embodiment in that: one of the retaining arms 402 is bent only once in the proximal and lateral direction.

In the above embodiments of the distal elastic clip 3 and the proximal elastic clip 4, the elastic clip arm and the limiting arm are located in the same plane, and when the distal elastic clip 3 and the proximal elastic clip 4 are fixed to the first clip arm 1 and the second clip arm 2, if the distal elastic clip 3 or the proximal elastic clip 4 is provided with the limiting arm, the flexible binding member 12 (such as a rope) passes through the distal fixing hole 15 or the proximal fixing hole 16 and then is tied to the fixing hole or the arc-shaped recess between the limiting arm and the elastic clip arm; if the far-end elastic clamp 3 or the near-end elastic clamp 4 is not provided with a limiting arm, the flexible binding piece 12 is not used, and only the end head of the elastic clamping arm is clamped on the outer side surfaces of the first clamping arm 1 and the second clamping arm 2.

Example two

As shown in fig. 3, and in conjunction with fig. 4 and 5, there is shown a second embodiment of a closure clip of the present invention, which differs from the first embodiment of the closure clip in that: two elastic clamping arms of the far-end elastic clamp 3 are respectively fixed on the first clamping arm 1 and the second clamping arm 2 through pin shafts 18, and two elastic clamping arms of the near-end elastic clamp 4 are also respectively fixed on the first clamping arm 1 and the second clamping arm 2 through pin shafts 18. The specific fixing mode is as follows: all be equipped with distal end fixed plate 13 and near-end fixed plate 14 on the thin wall of first arm lock 1, all be equipped with distal end fixed plate 13 and near-end fixed plate 14 on the thin wall of second arm lock 2, be equipped with distal end fixed orifices 15 on the distal end fixed plate 13, be equipped with near-end fixed orifices 16 on the near-end fixed plate 14, all install in distal end fixed orifices 15 and the near-end fixed orifices 16 round pin axle 18, the round pin axle 18 that is located distal end fixed orifices 15 is fixed in first arm lock 1 and second arm lock 2 with the elasticity arm lock of distal end elasticity clamp 3 on, and round pin axle 18 that is located near-end fixed orifices 16 is fixed in first arm lock 1 and second arm lock 2 with the elasticity arm lock of near-end elasticity.

When the far-end elastic clamp 3 and the near-end elastic clamp 4 are fixed to the first clamping arm 1 and the second clamping arm 2, if the far-end elastic clamp 3 or the near-end elastic clamp 4 is provided with a limiting arm, the pin 18 penetrates through the far-end fixing hole 15 or the near-end fixing hole 16, the pin 18 is located in a fixing hole or an arc-shaped recess between the limiting arm and the elastic clamping arm, and the pin 18 extrudes and fixes the elastic clamping arm on the outer side face of the first clamping arm 1 or the second clamping arm 2; if the far-end elastic clamp 3 or the near-end elastic clamp 4 is not provided with a limiting arm, the pin shaft 18 is not used, and only the end head of the elastic clamping arm is clamped on the outer side surfaces of the first clamping arm 1 and the second clamping arm 2.

A far-end elastic clamp 3 and a near-end elastic clamp 4 in the closed clamp are arranged along the length direction of a first clamping arm 1 and a second clamping arm 2, two elastic clamping arms of the far-end elastic clamp 3 are respectively clamped at the far ends of the outer side surfaces of the first clamping arm 1 and the second clamping arm 2, and two elastic clamping arms of the near-end elastic clamp 4 are respectively clamped at the near ends of the outer side surfaces of the first clamping arm 1 and the second clamping arm 2. Because distal end elastic clamp 3 and near-end elastic clamp 4 all arrange along the length direction of first arm lock 1 and second arm lock 2, make the volume of whole sealing clamp littleer, it is more convenient to operate.

The invention has the following advantages:

1) the far-end elastic clamp 3 continuously provides far-end closing force, the near-end elastic clamp 4 continuously provides near-end closing force, the near end and the far end of the clamping arm can be closed simultaneously, uniform closing force between the clamping closing surfaces 5 is guaranteed, and tissue closing integrity is guaranteed.

2) The distal and proximal ends of the arms are free to open, either in parallel (as shown in figures 2 and 4) or in a V-shape (as shown in figure 5), with the closing force being resiliently adjustable according to the thickness of the tissue to be clamped therebetween, the distal and proximal ends of the arms being non-interfering with each other.

3) The elastic clamping arms and the limiting arms of the far-end elastic clamp 3 and the near-end elastic clamp 4 are coplanar and can move in a channel formed by two adjacent thin walls, so that the coplanarity of the first clamping arm 1 and the second clamping arm 2 is ensured (namely the two clamping arms are not staggered or staggered), the overall stability of the closed clamp is enhanced, the geometric volume is reduced, and meanwhile, the clamping arms can be freely closed and opened.

4) The distal and proximal closing forces of the clip arms can be adjusted in multiple ways, for example, by adjusting the diameters of the distal elastic clip 3 and the proximal elastic clip 4, and adjusting the lengths of the elastic clip arms of the distal elastic clip 3 and the proximal elastic clip 4 to obtain the clinical target closing force.

5) The assembly is simple, the automatic limiting function is achieved, and after the clamping arms are assembled, the far-end elastic clamp 3 and the near-end elastic clamp 4 can normally work and cannot be separated from the initially assembled position.

6) The pin shaft 18 is fixed or flexibly bound, so that the weight and the assembly difficulty can be reduced.

7) The closure clip can be open on one side and it is easier to capture target tissue such as the left atrial appendage, mitral valve leaflets, tricuspid valve leaflets.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. A closure clip, comprising: including first arm lock, second arm lock, distal end elastic clamp and near-end elastic clamp, first arm lock and second arm lock set up relatively, distal end elastic clamp and near-end elastic clamp all arrange along the length direction of first arm lock and second arm lock, two elastic arm locks that distal end elastic clamp do not centre gripping in the lateral surface distal end of first arm lock and second arm lock, two elastic arm locks that near-end elastic clamp do not centre gripping in the lateral surface near-end of first arm lock and second arm lock.

2. The closure clip of claim 1, wherein: the near-end of first arm lock is equipped with first spacing through-hole, the near-end of second arm lock is equipped with the spacing through-hole of second, an elasticity arm lock centre gripping that distal end elasticity pressed from both sides in the lateral surface distal end of first arm lock, another elasticity arm lock that distal end elasticity pressed from both sides pass behind first spacing through-hole and the spacing through-hole of second centre gripping in the lateral surface distal end of second arm lock, an elasticity arm lock centre gripping that near-end elasticity pressed from both sides in the lateral surface near-end of first arm lock, another elasticity arm lock that near-end elasticity pressed from both sides pass behind first spacing through-hole and the spacing through-hole of second centre gripping in the lateral surface near-end of second arm lock.

3. The closure clip of claim 2, wherein: all be equipped with three thin wall, three on the lateral surface of first arm lock and second arm lock the thin wall is first thin wall, second thin wall and third thin wall respectively, the length direction of first arm lock and second arm lock is arranged along the thin wall, first thin wall and second thin wall constitute first passageway, second thin wall and third thin wall constitute the second passageway, the first passageway of first arm lock corresponds from top to bottom with the first passageway of second arm lock, the second passageway of first arm lock corresponds from top to bottom with the second passageway of second arm lock, distal end elasticity presss from both sides and near-end elasticity presss from both sides and establishes to one, two elasticity arm locks of distal end elasticity clamp are located the first passageway of first arm lock and second arm lock respectively, two elasticity of near-end elasticity clamp are located the second passageway of first arm lock and second arm lock respectively.

4. The closure clip of claim 2, wherein: the clamping device comprises a first clamping arm, a second clamping arm, a third clamping arm, a fourth clamping arm, a third elastic clamp and a third elastic clamp, wherein the outer side surfaces of the first clamping arm and the second clamping arm are respectively provided with four thin walls, the four thin walls are respectively a first thin wall, a second thin wall, a third thin wall and a fourth thin wall, the thin walls are arranged along the length direction of the first clamping arm and the second clamping arm, the first thin wall and the second thin wall form a first channel, the second thin wall and the third thin wall form a second channel, the third thin wall and the fourth thin wall form a third channel, the first channel of the first clamping arm vertically corresponds to the first channel of the second clamping arm, the second channel of the first clamping arm vertically corresponds to the second channel of the second clamping arm vertically, the third channel of the first clamping arm vertically corresponds to the third channel of the second clamping arm vertically, the distal elastic clamps are two, one of the distal elastic clamps is respectively positioned in the first channel of the first clamping arm and the second clamping The near-end elastic clamp is one, and the two elastic clamping arms of the near-end elastic clamp are respectively positioned in the second channels of the first clamping arm and the second clamping arm.

5. A closure clip according to claim 3 or 4, wherein: the junction of two elasticity arm lock of distal end elasticity clamp is the U type, the junction of two elasticity arm lock of near-end elasticity clamp also is the U type, two elasticity arm lock ends of distal end elasticity clamp are connected with a spacing arm respectively, two elasticity arm lock ends of near-end elasticity clamp also are connected with a spacing arm respectively.

6. The closure clip of claim 5, wherein: two elastic clamping arms of the far-end elastic clamp are fixed on the first clamping arm and the second clamping arm through flexible binding pieces respectively, and two elastic clamping arms of the near-end elastic clamp are also fixed on the first clamping arm and the second clamping arm through flexible binding pieces respectively.

7. The closure clip of claim 6, wherein: all be equipped with distal end fixed plate and near-end fixed plate on the thin wall of first arm lock, all be equipped with distal end fixed plate and near-end fixed plate on the thin wall of second arm lock, be equipped with the distal end fixed orifices on the distal end fixed plate, be equipped with the near-end fixed orifices on the near-end fixed plate, all alternate in distal end fixed orifices and the near-end fixed orifices and the flexible binding piece, the flexible binding piece that is located the distal end fixed orifices is fixed in first arm lock and second arm lock with the elasticity arm lock of distal end elasticity clamp on, and the flexible binding piece that is located the near-end fixed orifices is fixed in first arm lock and second arm lock with the elasticity arm lock of near-end elasticity clamp.

8. The closure clip of claim 5, wherein: two elastic clamping arms of the far-end elastic clamp are respectively fixed on the first clamping arm and the second clamping arm through pin shafts, and two elastic clamping arms of the near-end elastic clamp are also respectively fixed on the first clamping arm and the second clamping arm through pin shafts.

9. The closure clip of claim 8, wherein: the elastic clamping arm fixing device is characterized in that a far-end fixing plate and a near-end fixing plate are arranged on the thin wall of the first clamping arm, a far-end fixing plate and a near-end fixing plate are arranged on the thin wall of the second clamping arm, a far-end fixing hole is formed in the far-end fixing plate, a near-end fixing hole is formed in the near-end fixing plate, a pin shaft is arranged in the far-end fixing hole and the near-end fixing hole, the elastic clamping arm of the far-end elastic clamp is fixed on the first clamping arm and the second clamping arm through the pin shaft in the far-end fixing hole, and the elastic clamping arm of the near-end.

10. The closure clip of claim 5, wherein: the first limiting through holes comprise at least two mutually independent first sub-through holes, the number of the first sub-through holes is the same as that of the far-end elastic clamps and the near-end elastic clamps through the first limiting through holes, the second limiting through holes comprise at least two mutually independent second sub-through holes, and the number of the second sub-through holes is the same as that of the far-end elastic clamps and the near-end elastic clamps through the second limiting through holes.