A type of clamping forceps to prevent secondary damage in aortic dissection surgery

Abstract

This invention relates to the field of medical device technology, specifically providing a cleaving forceps for aortic dissection surgery to prevent secondary injury. The forceps include a handheld cylinder with a first and second wrench on its gripping portion. A clamping head is detachably connected to the head of the handheld cylinder, and the clamping head has two elastically deformable clamping plates. When clamping a blood vessel, the two elastic clamping plates are in an arc-shaped state. After the suspended ends of the two elastic clamping plates capture the target blood vessel, they move closer together, locking the blood vessel between the two arc-shaped clamping arms. This avoids the situation where traditional cleaving forceps open at a large angle, affecting surrounding blood vessels, thus preventing damage to them. Subsequently, the two elastic clamping plates gradually transform into straight clamping arms, gradually and smoothly clamping the blood vessel to block blood flow inside.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a ligation clamp for preventing secondary damage during aortic dissection surgery. Background Technology

[0002] In aortic dissection surgery, the occlusion clamp (also known as the vascular occlusion clamp or aortic occlusion clamp) is a key surgical instrument, mainly used to temporarily block blood flow so that the surgeon can perform the repair surgery.

[0003] For example, Chinese patent CN118436397A discloses an aortic clamping clamp, including a first clamping arm and a second clamping arm, which are hinged together by a pivot. A first clamping part and a second clamping part are respectively located at the first ends of the first clamping arm and the second clamping arm, and a first gripping part and a second gripping part are respectively located at the second ends of the first clamping arm and the second clamping arm. An illumination component is disposed in the first clamping part, which is adapted to provide light to the second clamping part. The second clamping part is made of a transparent material. A first soft membrane is disposed on the surface of the illumination component, and a second soft membrane is disposed on the surface of the second clamping part. It is possible to visually observe whether the aortic vessel is completely clamped. The operator presses the first gripping part and the second gripping part to clamp the aorta, thereby completing the blockage of blood flow in the aorta.

[0004] However, the first and second clamping parts in the above scheme need to open to a large extent to capture the target blood vessel. The large opening may affect the surrounding blood vessels and cause damage to them. Summary of the Invention

[0005] Therefore, it is necessary to provide a ligature for aortic dissection surgery that prevents secondary damage, addressing the problem that current ligatures open too wide when clamping the aorta and are prone to damaging surrounding blood vessels.

[0006] The above objectives are achieved through the following technical solutions:

[0007] A clogging clamp for aortic dissection surgery to prevent secondary injury includes:

[0008] A handheld cylinder, wherein the handheld cylinder has a gripping part;

[0009] The clamping head is detachably connected to the head of the handheld cylinder. The clamping head is provided with two elastic clamping plates. One end of the two elastic clamping plates is rotatably connected to the clamping head, and the other end of the two elastic clamping plates is suspended. The two elastic clamping plates can move closer or further apart from each other and deform when clamping blood vessels.

[0010] When the two elastic clamping plates are in the first state, the two elastic clamping plates bulge outward to form arc-shaped clamping arms to capture blood vessels;

[0011] When the two elastic clamping plates are in the second state, they form a straight clamping arm to block blood flow inside the blood vessel.

[0012] Furthermore, the two elastic clamping pieces include multiple hinge blocks, which are hinged to each other. An elastic block is provided between adjacent hinge blocks. In the initial state, the elastic block pushes the adjacent hinge block to form an outward convex state with the hinge point as the rotation center.

[0013] When the elastic block contracts, it pulls the adjacent hinge block to form a straight state with the hinge point as the center of rotation.

[0014] The gripping part is provided with a first wrench, and the two elastic clamping plates are provided with a first steel wire rope. One end of the first steel wire rope is fixed to the suspended end of the two elastic clamping plates, and the other end of the first steel wire rope is connected to the first wrench. The first wrench can pull the first steel wire rope to retract the elastic block.

[0015] Furthermore, the clamping head is provided with two rotating shafts, one end of each of the two elastic clamping plates is connected to the two rotating shafts respectively, the gripping part is provided with a second wrench, a second steel wire rope is wound around the outer circumference of the rotating shaft, one end of the second steel wire rope is connected to the outer circumference of the rotating shaft, the other end of the second steel wire rope is connected to the second wrench, and a torsion spring is provided at the connection between the two rotating shafts and the clamping head.

[0016] Furthermore, a sliding sleeve is provided at the connection between the two elastic clamping pieces and the two rotating shafts. The sliding sleeve is fixedly connected to the outer periphery of the rotating shaft. One end of the two elastic clamping pieces is slidably disposed in the sliding sleeve. An elastic element is provided in the sliding sleeve. One end of the elastic element is connected to the end of the elastic clamping piece located in the sliding sleeve, and the other end of the elastic element is connected to the inside of the sliding sleeve.

[0017] Furthermore, a locking component is provided inside the clamping head, which can maintain or release the two elastic clamping pieces in the second state.

[0018] Furthermore, the locking assembly includes a locking head, a first locking block, and a second locking block. The first locking block and the second locking block are axially slidably disposed within the clamping head. The first locking block is fixedly connected to the first steel wire rope, and the second locking block is fixedly connected to the second steel wire rope. There are two locking heads, which are radially slidably disposed within the clamping head. When the two locking heads approach each other, they engage unidirectionally with the first locking block and the second locking block, respectively. When the two locking heads move away from each other, they disengage from the first locking block and the second locking block, respectively.

[0019] Furthermore, the clamping head has an axially extending first slide groove and a second slide groove, the first locking block and the second locking block are respectively located in the first slide groove and the second slide groove, and the side wall of the clamping head has two radially extending locking grooves, the two locking grooves are respectively connected to the first slide groove and the second slide groove, and the two locking heads are respectively located in the two locking grooves, and the two locking heads can slide in the locking grooves.

[0020] Furthermore, a tension spring is provided at the bottom of the two locking grooves. One end of the tension spring is connected to the bottom of the locking groove, and the other end of the tension spring is connected to the locking head. A through hole is provided at the bottom of the two locking grooves. A protrusion that cooperates with the through hole is provided on the locking head. A U-shaped card plate is slidably provided on the outside of the clamping head. The U-shaped card plate can push the protrusion to move axially along the through hole.

[0021] Furthermore, a mating sleeve is provided on the outer periphery of the clamping head, and the mating sleeve is detachably connected to the handheld cylinder.

[0022] Furthermore, the elastic block is made of medical-grade silicone rubber.

[0023] The beneficial effects of this invention are:

[0024] This invention incorporates two deformable elastic clamping plates. When clamping a blood vessel, the two plates are in an arc shape. After capturing the target blood vessel at their suspended ends, they move closer together to lock the blood vessel between the two arc-shaped clamping arms. This avoids the situation where traditional clamping forceps open at a large angle when capturing a blood vessel, which can affect surrounding blood vessels and thus prevent damage to them. Subsequently, the two elastic clamping plates gradually transform into straight clamping arms, gradually and smoothly clamping the blood vessel to block the blood flow inside.

[0025] The present invention provides a sliding sleeve between the elastic clamping plates and the rotating shaft. The two elastic clamping plates can move closer to the sliding sleeve within the sleeve, thereby reducing the locking range of the two elastic clamping plates on the blood vessel. This allows the blood vessel to contract and increase the wall thickness of the blood vessel to prevent rupture.

[0026] This invention reduces the impact of holding the cylinder on the surgery by providing a detachable clamping head and a locking component, so that the clamping head can be locked after being detached by the locking component. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a clogging clamp for preventing secondary injury in aortic dissection surgery according to an embodiment of the present invention;

[0028] Figure 2This is a front view of the first state of the aortic dissection surgery anti-secondary injury clamp provided in an embodiment of the present invention;

[0029] Figure 3 This is a front view of the second state of the aortic dissection surgery clamp for preventing secondary injury according to an embodiment of the present invention;

[0030] Figure 4 for Figure 2 Left view of the first state of the aortic dissection surgery anti-secondary injury clamp provided in one embodiment;

[0031] Figure 5 for Figure 4 A cross-sectional view along the aortic axial direction (AA) of a clogging clamp for aortic dissection surgery provided in one embodiment;

[0032] Figure 6 for Figure 5 A partial enlarged view of the X portion of the occlusion clamp for preventing secondary injury in aortic dissection surgery provided in one embodiment;

[0033] Figure 7 An exploded view of a clogging clamp for preventing secondary injury during aortic dissection surgery according to an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the clamping head structure of a clogging forceps for preventing secondary injury in aortic dissection surgery according to an embodiment of the present invention.

[0035] Figure 9 for Figure 8 A left view of the clamping head of a clogging forceps for preventing secondary injury in aortic dissection surgery provided in one embodiment;

[0036] Figure 10 for Figure 9 A cross-sectional view along the BB of the clamping head of the occlusion clamp for preventing secondary injury in aortic dissection surgery provided in one embodiment;

[0037] Figure 11 for Figure 10 A partial enlarged view of the clamping head Y portion of the occlusion clamp for preventing secondary injury in aortic dissection surgery provided in one embodiment;

[0038] Figure 12 This is an exploded view of the clamping head of a clogging forceps for preventing secondary injury during aortic dissection surgery, provided in an embodiment of the present invention.

[0039] in:

[0040] 100. Handheld cylinder body; 110. Grip part; 120. First wrench; 130. Second wrench; 140. Extended cylinder; 150. Matching sleeve; 160. First wire rope; 170. Second wire rope; 180. Hook;

[0041] 200. Clamping head; 210. First slide groove; 220. Second slide groove; 230. Locking groove; 240. Through hole; 250. U-shaped clamping plate; 260. Restricting through groove; 270. Tension spring;

[0042] 300. Elastic clamping piece; 310. Hinge block; 320. Elastic block; 330. Rotating shaft; 340. Sliding sleeve; 350. Elastic element;

[0043] 400 Locking head; 410 First locking block; 420 Second locking block; 430 One-way ratchet; 440 Protrusion. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0045] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] The following reference Figures 1-12 This invention describes a cleaving clamp for preventing secondary damage during aortic dissection surgery.

[0048] A clamping device for preventing secondary injury during aortic dissection surgery, suitable for clamping the aorta to block blood flow during aortic dissection surgery, including a handheld cylinder 100, such as... Figure 1 As shown, the handheld cylinder 100 has a gripping part 110, and the gripping part 110 is provided with a first wrench 120 and a second wrench 130. The head of the handheld cylinder 100 is detachably equipped with a clamping head 200. In the prior art, two clamping arms are generally installed on the clamping head 200. When the two clamping arms are close to each other, they can clamp blood vessels. However, the two clamping arms need to open to a large extent to capture the target blood vessel. The large opening range will affect the surrounding blood vessels. For example, when clamping the target blood vessel, there are other blood vessels behind the target blood vessel. At this time, the two clamping arms will clamp other blood vessels at the same time when clamping the target blood vessel, which may cause damage to other blood vessels.

[0049] Therefore, to overcome the above problems, the present invention provides two elastic clamping pieces 300 on the clamping head 200. One end of each elastic clamping piece 300 is rotatably connected to the clamping head 200, and the other end is suspended. When clamping a blood vessel, the two elastic clamping pieces 300 can move closer or further apart and can deform, meaning they have two states. In the first state, the two elastic clamping pieces 300 bulge outwards to form an arc-shaped clamping arm, specifically as shown below. Figure 2 and Figure 6 As shown, the sides of the two elastic clamping pieces 300 that are close to each other are concave. The suspended ends of the two elastic clamping pieces 300 do not affect surrounding blood vessels after capturing the target blood vessel. Subsequently, the two elastic clamping pieces 300 switch to a second state. In the second state, as... Figure 3 As shown, the two elastic clamping pieces 300 have their suspended ends in contact with each other, and the two elastic clamping pieces 300 form a straight clamping arm that can clamp the blood vessel to block the internal blood flow.

[0050] By setting two deformable elastic clamping plates 300, the two elastic clamping plates 300 are in an arc shape when clamping the blood vessel. After the two elastic clamping plates 300 capture the target blood vessel at the suspended end, they move closer to each other to lock the blood vessel between the two arc-shaped clamping arms. This avoids the situation where traditional blocking forceps need to open at a large angle when capturing the target blood vessel, which may affect the surrounding blood vessels. Subsequently, the two elastic clamping plates 300 gradually transform into straight clamping arms, gradually clamping the blood vessel to block the blood flow inside the blood vessel.

[0051] Specifically, such as Figure 5 and Figure 6As shown, in this embodiment, each of the two elastic clamping pieces 300 is composed of multiple hinge blocks 310. The multiple hinge blocks 310 are hinged together. The hinge point of each hinge block 310 is located on the side of the two elastic clamping pieces 300 formed by the multiple hinge blocks 310 that are close to each other. The interval between each hinge point is the same. On the side that are far from each other, multiple elastic blocks 320 are distributed at intervals. The multiple elastic blocks 320 are located between adjacent hinge blocks 310. The arrangement of multiple elastic blocks 320 allows adjacent hinge blocks 310 to rotate around the hinge center, thereby creating an angle between adjacent hinge blocks 310. The angle between multiple hinge blocks 310 makes the two elastic clamping pieces 300 form an arc-shaped clamping arm. When the multiple elastic blocks 320 contract, they can make adjacent hinge blocks 310 move closer to each other, thereby making the two elastic clamping pieces 300 form a straight clamping arm.

[0052] It should be noted that the materials of the multiple hinge blocks 310 in this embodiment are all medical-grade stainless steel, titanium alloy or aluminum alloy and other metals suitable for medical use. At the same time, the materials of the multiple elastic blocks 320 are all medical-grade silicone rubber and other elastic materials.

[0053] More specifically, to achieve the contraction of multiple elastic blocks 320, a first steel wire rope 160 is provided inside the two elastic clamping plates 300. One end of the first steel wire rope 160 is fixedly connected to the suspended end of the elastic clamping plate 300, and the other end of the first steel wire rope 160 passes through the other end of the elastic clamping plate 300 and is fixedly connected to the first wrench 120. It should be noted that the end of the first steel wire rope 160 near the two elastic clamping plates 300 branches into two strands, each connecting to one of the two elastic clamping plates 300, while the end connected to the first wrench 120 remains as a single strand. When the operator moves the first wrench 120, the first steel wire rope 160 can be tightened. 0. The first steel wire rope 160 pulls the suspended end of the two elastic clamping plates 300, so that the multiple hinge blocks 310 forming the two elastic clamping plates 300 can squeeze the elastic block 320. After the elastic block 320 contracts, the multiple hinge blocks 310 move closer to each other, so that the two elastic clamping plates 300 switch to straight clamping arms. When the first steel wire rope 160 tightens, the parts of the two arc-shaped clamping arms that are furthest apart move closer first, so as to gradually clamp the blood vessel. When the first steel wire rope 160 is not subjected to tightening force, the elastic blocks 320 between adjacent hinge blocks 310 will reset under their own elastic force, so that the elastic clamping plates 300 return to their arc shape.

[0054] More specifically, to enable the two elastic clamping pieces 300 to move closer or further apart, two rotating shafts 330 are provided inside the clamping head 200. These two shafts 330 can rotate around their own axes. One end of each elastic clamping piece 300 is connected to the outer periphery of the two rotating shafts 330. When the two rotating shafts 330 rotate, they can cause the two elastic clamping pieces 300 to move closer or further apart. In this embodiment, a second steel wire rope 170 is wound around the outer periphery of the two rotating shafts 330. One end of the second steel wire rope 170 is fixed to the outer periphery of the two rotating shafts 330, and the other end is fixedly connected to the second wrench 130. It should be noted that in this embodiment, the end of the second steel wire rope 170 near the two rotating shafts 330 is also divided into two strands. Two rotating shafts 330 are connected separately, while one end of the second wrench 130 is connected to a single shaft. In this embodiment, the two rotating shafts 330 are rotatably connected to a torsion spring (not shown in the figure) at the position of the clamping head 200. In the initial state, the torsion spring keeps the two elastic clamping plates 300 on the two rotating shafts 330 away from each other. When the operator moves the second wrench 130, the second steel wire rope 170 can be tightened. The second steel wire rope 170 pulls the rotating shaft 330 to rotate, thereby bringing the two elastic clamping plates 300 closer together to clamp the blood vessel. At the same time, the rotating shaft 330 pulls the torsion spring to store force. When the second steel wire rope 170 is not under tightening force, the torsion spring releases its elastic force, thereby driving the rotating shaft 330 to return to its original position, and thus enabling the two elastic clamping plates 300 to move away from each other.

[0055] It should be noted that in this embodiment, the first steel wire rope 160 is used to switch the two elastic clamping plates 300 from the arc-shaped clamping arm to the straight clamping arm. During this process, the arc-shaped clamping arms of the two elastic clamping plates 300 gradually move closer to each other from the middle protruding position, thereby gradually clamping the blood vessel from the cylindrical state to the flat state, thus blocking the blood flow in the blood vessel. Clamping the blood vessel from the middle can make the blood vessel have room to expand around it, which can avoid the formation of wrinkles when the blood vessel changes from the cylindrical state to the flat state, thereby preventing secondary damage to the blood vessel.

[0056] In a further embodiment, to enhance the clamping effect of the two elastic clamping pieces 300 on the blood vessel, a sliding sleeve 340 is provided between the rotating shaft 330 and the elastic clamping pieces 300. One end of the sliding sleeve 340 is fixedly connected to the outer periphery of the rotating shaft 330, and the other end of the sliding sleeve 340 is slidably connected to one end of the elastic clamping piece 300, allowing one end of the elastic clamping piece 300 to move axially within the sliding sleeve 340. An elastic element 350, which can be a compression spring, is provided within the sliding sleeve 340. One end of the elastic element 350 is fixedly connected within the sliding sleeve 340, and the other end is fixedly connected to the elastic clamping piece 300. At one end, when the operator pulls the first wrench 120 to tighten the first steel wire rope 160, the first steel wire rope 160 can overcome the elastic element 350 inside the sliding sleeve 340, causing the elastic element 350 to compress. At this time, the two elastic clamping plates 300 can move towards the sliding sleeve 340, thereby reducing the clamping range of the two elastic clamping plates 300. This allows the blood vessel near this position to be partially contracted by the two elastic clamping plates 300, increasing the wall thickness of the blood vessel. During the subsequent clamping process of the two elastic clamping plates 300, it can prevent the rupture of the blood vessel wall and improve the clamping effect of the blood vessel, further avoiding secondary damage to the blood vessel.

[0057] In a further embodiment, in order to facilitate locking the two elastic clamping pieces 300 to clamp the blood vessel, that is, to lock the two elastic clamping pieces 300 in the second state, a locking component is provided on the clamping head 200 in this embodiment. The locking component can lock or release the two elastic clamping pieces 300 from the second state.

[0058] Specifically, the locking assembly includes a locking head 400, a first locking block 410, and a second locking block 420. Both the first locking block 410 and the second locking block 420 are axially slidably disposed within the clamping head 200. The first locking block 410 is fixedly connected to the first wire rope 160, and the second locking block 420 is fixedly connected to the second wire rope 170. Therefore, when the first wrench 120 and the second wrench 130 tighten the first wire rope 160 and the second wire rope 170, they will simultaneously drive the first locking block 410 and the second locking block 420 to move axially within the clamping head 200. There are two locking heads 400, which are radially slidably disposed within the clamping head 200. The two locking heads 400 can approach or move away from each other, thereby allowing the two locking heads 400 to contact or disengage from the first locking block 410 and the second locking block 420, respectively. The first locking block 410 has a one-way ratchet 430 on its end face near the locking head 400, and the locking head 400 also has a one-way ratchet 430 on its end face near the first locking block 410, but in the opposite direction. When the one-way ratchet 430 of the locking head 400 engages with the one-way ratchet 430 of the first locking block 410, the first locking block 410 can only move in one direction relative to the locking head 400 and cannot move in the opposite direction. When the first wrench 120 tightens the first wire rope 160, the first wire rope 160 can pull the first locking block 410 to move. If the operator releases the first wrench 120, the first wire rope 160 can be prevented from loosening under the effect of the locking head 400 restricting the first locking block 410 from moving in the opposite direction. This can prevent the two elastic clamping plates 300 from always being in a straight clamping arm state to clamp the blood vessel.

[0059] Similarly, the end face of the second locking block 420 near the locking head 400 is also provided with a one-way ratchet 430, and the end face of the locking head 400 near the second locking block 420 is also provided with a one-way ratchet 430, but the direction is opposite to that of the one-way ratchet 430 on the second locking block 420. Therefore, the second locking block 420 can only move in one direction relative to the locking head 400 and cannot move in the opposite direction. When the second wrench 130 tightens the second steel wire rope 170, it can pull the second locking block 420 to move relative to the locking head 400. If the operator releases the second wrench 130, the second steel wire rope 170 can be prevented from loosening under the effect of the locking head 400 restricting the second locking block 420 from moving in the opposite direction. This allows the two rotating shafts 330 to drive the two elastic clamping plates 300 to move closer to each other to continuously clamp the blood vessel.

[0060] Specifically, such as Figure 10 and Figure 11As shown, in this embodiment, the clamping head 200 has a first sliding groove 210 and a second sliding groove 220 extending axially along the clamping head 200 at one end near the handheld cylinder 100. The first locking block 410 and the second locking block 420 are respectively located in the first sliding groove 210 and the second sliding groove 220. Two locking grooves 230 are formed on the inner sidewall of the clamping head 200. The two locking heads 400 are slidably disposed in the two locking grooves 230 and can move radially along the clamping head 200 within the locking grooves 230. In this embodiment, the two locking grooves 230 are respectively connected to the first sliding groove 210 and the second sliding groove 220, so that when the two locking heads 400 in the two locking grooves 230 extend out of the locking grooves 230, they can contact the first locking block 410 and the second locking block 420, thereby enabling the one-way ratchet 430 on the first locking block 410 and the second locking block 420 to engage with the one-way ratchet 430 on the two locking heads 400.

[0061] More specifically, to enable the two locking heads 400 to release the unidirectional restriction on the first locking block 410 and the second locking block 420, a tension spring 270 is provided in the locking groove 230. The tension spring 270 can pull the locking head 400 inward into the locking groove 230. A protrusion 440 is provided on the end face of the locking head 400 away from the first locking block 410 and the second locking block 420. A through hole 240 is provided at the bottom of the two locking grooves 230. The protrusion 440 extends out of the clamping head 200 through the through hole 240. During operation, the operator needs to press the protrusion 440 to... The tension spring 270 within the locking groove 230 is overcome so that the locking head 400 extends out of the locking groove 230. The first locking block 410 and the second locking block 420 can be unidirectionally restricted by the two locking heads 400, thereby preventing the first steel wire rope 160 and the second steel wire rope 170 from loosening. When the aortic dissection surgery is completed and it is necessary to stop clamping the blood vessel, the protrusion 440 on the locking head 400 can be released. The tension spring 270 within the locking groove 230 will pull the locking head 400 inward within the locking groove 230, thereby releasing the unidirectional restriction on the first locking block 410 and the second locking block 420.

[0062] It should be noted that, to facilitate pressing the protrusion 440, a U-shaped retaining plate 250 is slidably provided on the outer side wall of the clamping head 200. The two side walls of the U-shaped retaining plate 250 are provided with limiting grooves 260. The size of the limiting grooves 260 is larger than the size of the protrusion 440, and the surface of the protrusion 440 is spherical. When the limiting grooves 260 on the U-shaped retaining plate 250 correspond to the protrusion 440, that is, when the protrusion 440 is located within the limiting grooves 260, the locking head 400 retracts into the locking groove 230. When the U-shaped retaining plate 250 slides on the clamping head 200, the protrusion 440 disengages from the limiting grooves 260. The locking head 400 is pressed against the two side walls of the U-shaped plate 250, causing it to extend out of the locking groove 230. At this time, the tension spring 270 is stretched and tends to pull the locking head 400 inward into the locking groove 230. Therefore, when it is not necessary to restrict the first locking block 410 and the second locking block 420, the U-shaped plate 250 slides in the opposite direction, and the limiting groove 260 on the U-shaped plate 250 re-aligns with the position of the protrusion 440. The tension spring 270 in the locking groove 230 then pulls the locking head 400 inward into the locking groove 230, and the protrusion 440 is repositioned in the limiting groove 260.

[0063] With the above-mentioned structural design, the operator can prevent the first wire rope 160 and the second wire rope 170 from loosening by sliding the U-shaped clamp 250 before use, and release the restriction on the first locking block 410 and the second locking block 420 by sliding the U-shaped clamp 250 in the opposite direction after the operation, which is convenient and quick.

[0064] In a further embodiment, since the handheld cylinder 100 is large in size and may affect the aortic dissection surgery, the entire handheld cylinder 100 is removed after the clamping head 200 clamps the blood vessel, leaving only the clamping head 200 to clamp the blood vessel, thereby avoiding the handheld cylinder 100 from affecting the surgery.

[0065] Specifically, the end of the clamping head 200 near the handheld cylinder 100 is detachably connected to the head of the handheld cylinder 100. Hooks 180 are connected to the first steel wire rope 160 and the second steel wire rope 170 on the first locking block 410 and the second locking block 420. Hooks 180 are also provided on the first steel wire rope 160 and the second steel wire rope 170 inside the handheld cylinder 100. When the clamping head 200 is connected to the handheld cylinder 100, the two hooks 180 of the two first steel wire ropes 160 are connected, and the two hooks 180 of the two second steel wire ropes 170 are connected. When the handheld cylinder 100 needs to be removed after the operation, the two hooks 180 can be separated to remove the handheld cylinder 100.

[0066] More specifically, a mating sleeve 150 is provided on the outer periphery of the clamping head 200. One end of the mating sleeve 150 is fixedly connected to the head of the handheld cylinder 100, while the other end of the mating sleeve 150 is detachably connected to the clamping head 200.

[0067] It should be noted that, in order to increase the length of the head of the handheld tube 100, an extension tube 140 is installed on the head of the handheld tube 100, and the sleeve 150 is connected to the extension tube 140.

[0068] The following describes the usage process of the aortic dissection surgery anti-secondary injury clamp provided by the present invention in conjunction with the above embodiments:

[0069] The operator holds the gripping part 110 of the handheld cylinder 100 and slides the U-shaped clamping plate 250, causing the protrusion 440 of the locking head 400 to be pushed by the limiting groove 260 on the U-shaped clamping plate 250. The protrusion 440 drives the locking head 400 to disengage from the locking groove 230 and then contact the first locking block 410 and the second locking block 420 to achieve a one-way restriction. The operator controls the clamping head 200 by holding the cylinder. In the initial state, that is, in the first state, the two elastic clamping pieces 300 on the clamping head 200 are arc-shaped clamping arms, and the two elastic clamping pieces 300 are far apart from each other, with one end of the two elastic clamping pieces 300 suspended. The operator allows the target blood vessel to pass through. By turning the second wrench 130, the second wrench 130 tightens the second steel wire rope 170. The second steel wire rope 170 pulls the two rotating shafts 330 to rotate, thereby reducing the distance between the two elastic clamping plates 300. This adjusts the distance between the suspended ends of the two elastic clamping plates 300 so that the distance is just enough to allow the target blood vessel to pass through. After the target blood vessel passes through, the operator continues to turn the second wrench 130 so that the suspended ends of the two elastic clamping plates 300 come into contact with each other to lock the blood vessel between the two elastic clamping plates 300. At this time, the arc-shaped clamping arm will not affect the blood vessels around the target blood vessel when locking the target blood vessel.

[0070] Next, the target blood vessel needs to be clamped to block the blood flow within it. The operator moves the first wrench 120, which tightens the first steel wire rope 160. The first steel wire rope 160 pulls the two elastic clamping plates 300 within the sliding sleeve 340 towards the rotating shaft 330 to compress the elastic element 350. The area surrounding the blood vessel formed by the two elastic clamping plates 300 decreases, causing the blood vessel wall to contract slightly and thus increasing its thickness, preventing rupture. When the first wrench 120 is moved again, the first steel wire rope 160 tightens and pulls the multiple hinge blocks 310 forming the two elastic clamping plates 300 to compress the elastic block 320, thereby causing the two elastic clamping plates 300 to gradually switch from arc-shaped clamping arms to straight clamping arms. During the switching process, the middle parts of the two elastic clamping plates 300 gradually move closer to each other to clamp the blood vessel. When the clamping arms are completely switched to straight, the blood flow within the blood vessel is completely blocked.

[0071] Remove the handheld tube body 100:

[0072] Twist the fitting sleeve 150 to remove the handheld cylinder 100 from the clamping head 200, and separate the two hooks 180 connecting the two sections of the first steel wire rope 160. At the same time, separate the hooks 180 connecting the two sections of the second steel wire rope 170. Since the first steel wire rope 160 and the second steel wire rope 170 located inside the clamping head 200 are respectively connected to the first locking block 410 and the second locking block 420, and the first locking block 410 and the second locking block 420 are unidirectionally restricted by the locking head 400, the first steel wire rope 160 and the second steel wire rope 170 are prevented from loosening, thus preventing the two elastic clamping plates 300 from loosening their clamping of the target blood vessel.

[0073] Surgery completed:

[0074] After aortic dissection surgery, the blockage of the blood vessel needs to be removed. At this time, the handheld cylinder 100 is connected to the clamping head 200, and the two sections of the first steel wire rope 160 and the two sections of the second steel wire rope 170 are connected by the hook 180. Then, the operator moves the first wrench 120 and the second wrench 130 so that the positions of the first wrench 120 and the second wrench 130 are the same as before disassembly. The U-shaped clamp 250 is then slid in the opposite direction, releasing the U-shaped clamp 250 from restricting the protrusion 440. The protrusion 440 is then repositioned in the restricting groove on the U-shaped clamp 250. Within 260, the locking head 400, under the action of the tension spring 270, re-enters the locking groove 230, releasing the restriction on the first locking block 410 and the second locking block 420. At this time, the operator slowly releases the first wrench 120 and the second wrench 130, and the elastic blocks 320 on the two elastic clamping plates 300 reset, thereby causing the two elastic clamping plates 300 to return to the arc-shaped clamping arms. The rotating shaft 330 is reset under the action of the torsion spring, thereby causing the two elastic clamping plates 300 to move away from each other, and the blood vessels gradually recover. The operator can then slowly remove the handheld cylinder 100.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A clamping forceps for preventing secondary injury during aortic dissection surgery, characterized in that, include: A handheld cylinder, wherein the handheld cylinder has a gripping part; The clamping head is detachably connected to the head of the handheld cylinder. The clamping head is provided with two elastic clamping plates. One end of the two elastic clamping plates is rotatably connected to the clamping head, and the other end of the two elastic clamping plates is suspended. The two elastic clamping plates can move closer or further apart from each other and deform when clamping blood vessels. When the two elastic clamping plates are in the first state, the two elastic clamping plates bulge outward to form arc-shaped clamping arms to capture blood vessels; When the two elastic clamping plates are in the second state, the two elastic clamping plates form a straight clamping arm to block the blood flow inside the blood vessel; The two elastic clamping plates include multiple hinge blocks, which are hinged to each other. An elastic block is provided between adjacent hinge blocks. In the initial state, the elastic block pushes the adjacent hinge block to form an outward convex state with the hinge point as the rotation center. When the elastic block contracts, it pulls the adjacent hinge block to form a straight state with the hinge point as the center of rotation. The gripping part is provided with a first wrench, and the two elastic clamping plates are provided with a first steel wire rope. One end of the first steel wire rope is fixed to the suspended end of the two elastic clamping plates, and the other end of the first steel wire rope is connected to the first wrench. The first wrench can pull the first steel wire rope to retract the elastic block.

2. The occlusion clamp for preventing secondary injury in aortic dissection surgery according to claim 1, characterized in that, The clamping head is provided with two rotating shafts. One end of each of the two elastic clamping plates is connected to the two rotating shafts. A second wrench is provided on the gripping part. A second steel wire rope is wound around the outer circumference of the rotating shaft. One end of the second steel wire rope is connected to the outer circumference of the rotating shaft, and the other end of the second steel wire rope is connected to the second wrench. A torsion spring is provided at the connection between the two rotating shafts and the clamping head.

3. The occlusion clamp for preventing secondary injury in aortic dissection surgery according to claim 2, characterized in that, A sliding sleeve is provided at the connection between the two elastic clamping pieces and the two rotating shafts. The sliding sleeve is fixedly connected to the outer circumference of the rotating shaft. One end of the two elastic clamping pieces is slidably disposed in the sliding sleeve. An elastic element is provided in the sliding sleeve. One end of the elastic element is connected to the end of the elastic clamping piece located in the sliding sleeve, and the other end of the elastic element is connected to the inside of the sliding sleeve.

4. The aortic dissection surgery clamp for preventing secondary injury according to claim 2, characterized in that, The clamping head is provided with a locking component, which can maintain or release the two elastic clamping pieces in the second state.

5. The aortic dissection surgery clamp for preventing secondary injury according to claim 4, characterized in that, The locking assembly includes a locking head, a first locking block, and a second locking block. The first locking block and the second locking block are axially slidably disposed within the clamping head. The first locking block is fixedly connected to the first steel wire rope, and the second locking block is fixedly connected to the second steel wire rope. There are two locking heads, which are radially slidably disposed within the clamping head. When the two locking heads are close to each other, they engage with the first locking block and the second locking block in one direction, respectively. When the two locking heads are far apart from each other, they disengage from the first locking block and the second locking block, respectively.

6. The aortic dissection surgery clamp for preventing secondary injury according to claim 5, characterized in that, The clamping head has an axially extending first slide groove and a second slide groove. The first locking block and the second locking block are located in the first slide groove and the second slide groove, respectively. The side wall of the clamping head has two radially extending locking grooves. The two locking grooves are connected to the first slide groove and the second slide groove, respectively. The two locking heads are located in the two locking grooves, and the two locking heads can slide in the locking grooves.

7. The aortic dissection surgery clamp for preventing secondary injury according to claim 6, characterized in that, A tension spring is provided at the bottom of the two locking slots. One end of the tension spring is connected to the bottom of the locking slot, and the other end of the tension spring is connected to the locking head. A through hole is provided at the bottom of the two locking slots. A protrusion that mates with the through hole is provided on the locking head. A U-shaped clamping plate is slidably provided on the outside of the clamping head. The U-shaped clamping plate can push the protrusion to move axially along the through hole.

8. The aortic dissection surgery clamp for preventing secondary injury according to claim 1, characterized in that, The clamping head is provided with a mating sleeve on its outer periphery, and the mating sleeve is detachably connected to the handheld cylinder.

9. The occlusion clamp for preventing secondary injury in aortic dissection surgery according to claim 1, characterized in that, The elastic block is made of medical-grade silicone rubber.

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