A hemostat applicable to abdominal aorta occlusion and catheterization

Abstract

The present invention discloses a vascular clamp applicable to abdominal aorta occlusion and catheterization, which comprises two articulated clamp arms. Each clamp arm is provided with a clamp head, and each clamp head is provided with two spaced-apart clamping parts. Two clamping parts on one clamp head can be correspondingly clamped with two clamping parts on the other clamp head to form two sets of clamping members. One of the two clamping parts forming a clamping member in one set is provided with an elastic member and an adjusting member. The elastic member is arranged on the side of the clamping part close to the other clamping part forming the clamping member, and the adjusting member is connected to the elastic member and can adjust the clamping distance between the elastic member and the clamping part when the other set of clamping members maintains a clamping state. The present invention can open and block both ends of the abdominal aorta during the operation through two sets of clamping members, so as to effectively block and control the blood flow of the abdominal aorta during the operation of obtaining abdominal organs, greatly simplify the operation of establishing the abdominal aorta perfusion system, reduce the ischemic time of organs, and improve the quality of donor organs.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a vascular clamp applicable to abdominal aorta occlusion and catheterization. Background Art

[0002] During the donor surgery for the donation of abdominal organs such as the liver, kidney, pancreas, and small intestine, it is necessary to quickly establish an abdominal organ perfusion system. By efficiently perfusing, the central temperature of the target organ can be rapidly reduced, and reducing the warm ischemia time of the target organ helps to improve the success rate of transplantation surgery. At the same time, it is also necessary to prevent the perfusion fluid from flowing into unnecessary organs. The current surgical method is as follows: First, expose the abdominal aorta below the superior mesenteric artery, then ligate the distal aorta, suture a thread at the proximal end, cut the proximal aortic wall and insert an aortic catheter. The insertion depth only needs to enter the thoracic aorta. However, it often depends on the experience of the surgeon to grasp. Then, inflate the balloon of the urinary catheter to initially fix the catheter and reduce the perfusion fluid flowing into the thoracic aorta. Then, suture and fix the catheter at the proximal end of the puncture site, and at the same time, pay attention to the appropriate tightness of the suture knot to avoid closing the catheter. During the surgical operation, the distal aorta needs to be ligated, and the perfusion catheter needs to be inserted after cutting the proximal end. Since the aortic pressure reaches 100 mmHg, manually occluding the aorta often results in incomplete occlusion, leading to catheterization failure, unclear exposure of the local anatomical structure, extremely easy to cause repeated catheterization or even catheterization failure, seriously affecting the perfusion efficiency of the donor organ and the organ quality. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a vascular clamp applicable to abdominal aorta occlusion and catheterization, which can effectively occlude and control the blood flow of the abdominal aorta during the abdominal organ harvesting surgery.

[0004] To solve the above technical problem, the present invention adopts the following technical solutions:

[0005] A vascular clamp applicable to abdominal aorta occlusion and catheterization includes two articulated clamp arms. Each clamp arm is provided with a clamp head, and each clamp head is provided with two spaced-apart clamping parts. One of the two clamping parts on one clamp head can correspond to and clamp with the two clamping parts on the other clamp head to form two sets of clamping members. One of the two clamping parts forming a clamping member is provided with an elastic member and an adjusting member. The elastic member is arranged on the side of the clamping part close to the other clamping part forming the clamping member, and the adjusting member is connected to the elastic member and can adjust the clamping distance between the elastic member and the clamping part when the other set of clamping members maintains the clamping state.

[0006] Further, the elastic member includes a spring piece. The two ends of the spring piece are connected to the clamping part, and there is a gap between the middle part of the spring piece and the clamping part.

[0007] Further, the adjusting member includes a screw, the screw passes through the clamping portion and abuts against the middle portion of the spring piece, the screw is threadedly connected to the clamping portion, and the axis of the screw is perpendicular to the surface of the spring piece.

[0008] Further, each of the clamping arms is provided with a hand-held portion, each of the hand-held portions is provided with a clamping block, and the two clamping blocks are snap-connected.

[0009] Further, each of the clamping portions is provided with anti-slip lines.

[0010] Further, one of the clamping arms is provided with a threaded hole, and the other clamping arm is movably connected with a bolt and can be tightly connected to the threaded hole through the bolt.

[0011] Further, each of the clamping arms includes a first connecting rod and a second connecting rod connected to the clamping head, a sleeve is provided on the first connecting rod, a rod core is provided on the second connecting rod, and the rod core is detachably inserted into the sleeve.

[0012] Further, the sleeve is provided with a bullet hole, the bullet hole vertically penetrates the wall of the sleeve, an elastic piece is fixedly installed on the circumference of the rod core, the elastic piece is provided with a bullet bead away from the rod core and can be clamped in the bullet hole when the rod core is inserted into the sleeve.

[0013] Further, a sliding groove is provided on the inner wall of the sleeve, the sliding groove extends along the axis of the sleeve, one end of the sliding groove communicates with the outside of the sleeve, and the other end of the sliding groove communicates with the bullet hole so that the bullet bead can slide along the sliding groove and can be movably clamped with the bullet hole.

[0014] Further, the sleeve is a rhombic cylinder, and the rod core is a rhombic rod.

[0015] Compared with the prior art, the advantages of the present invention are as follows:

[0016] In the present invention, two sets of clamping members can clamp the abdominal aorta during the operation. One set of clamping members without an elastic member completely clamps the distal end of the abdominal aorta. While fixing the proximal end of the abdominal aorta, the other set of clamping members with an elastic member can adjust the opening and blocking of the abdominal aorta through the adjusting member. When blocking the proximal end of the abdominal aorta, the abdominal aorta between the two sets of clamping members is incised, and then an arterial catheter is inserted into the thoracic aorta, that is, the aortic occlusion and catheterization operation is completed, so that the blood flow of the abdominal aorta can be effectively blocked and controlled during the abdominal organ harvesting operation, greatly simplifying the surgical operation of establishing an abdominal aortic perfusion system, reducing the ischemic time of the organ, and improving the quality of the donor organ. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a vascular clamp applicable to abdominal aortic occlusion and catheterization.

[0018] Figure 2 It is a schematic structural diagram of the pliers head.

[0019] Figure 3 It is a perspective structural diagram of the sleeve and the rod core.

[0020] Figure 4 It is a sectional structural diagram of the sleeve and the rod core.

[0021] Figure 5 It is a schematic structural diagram of the spring piece.

[0022] Legend:

[0023] 1. Pliers arm; 11. First connecting rod; 12. Second connecting rod; 2. Hand-held part; 21. Clamping block; 3. Pliers head; 31. Pliers part; 32. Clamping member; 33. Elastic member; 331. Spring piece; 34. Adjusting member; 341. Screw; 4. Anti-slip pattern; 5. Threaded hole; 51. Bolt; 6. Sleeve; 61. Rod core; 62. Elastic hole; 63. Elastic piece; 64. Ball; 65. Slide groove. Detailed implementation manners

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] As Figures 1 - 5 shown, the vascular clamp applicable to abdominal aorta occlusion and catheterization in this embodiment includes two hinged pliers arms 1. Each pliers arm 1 is provided with a pliers head 3. Each pliers head 3 is provided with two spaced-apart pliers parts 31. Two pliers parts 31 on one pliers head 3 can be correspondingly clamped with two pliers parts 31 on the other pliers head 3 one by one to form two groups of clamping members 32. One of the two pliers parts 31 forming a clamping member 32 is provided with an elastic member 33 and an adjusting member 34. The elastic member 33 is arranged on the side of the pliers part 31 close to the other pliers part 31 forming the clamping member 32. The adjusting member 34 is connected to the elastic member 33 and can adjust the clamping distance between the elastic member 33 and the pliers part 31 when the other group of clamping members 32 maintains the clamping state. The abdominal aorta can be clamped by the two groups of clamping members 32 during the operation. One group of clamping members 32 without the elastic member 33 completely clamps the distal end of the abdominal aorta. The group of clamping members 32 provided with the elastic member 33 can, while fixing the proximal end of the abdominal aorta, adjust the opening and blocking of the abdominal aorta through the adjusting member 34. When blocking the proximal end of the abdominal aorta, the abdominal aorta between the two groups of clamping members 32 is incised, and then an arterial catheter is inserted into the thoracic aorta, that is, the aortic occlusion and catheterization operation is completed, so that the blood flow of the abdominal aorta can be effectively blocked and controlled during the abdominal organ harvesting operation, greatly simplifying the surgical operation of establishing the abdominal aorta perfusion system, reducing the ischemic time of the organ, and improving the quality of the donor organ.

[0026] In this embodiment, the hemostatic forceps is entirely made of stainless steel. The handheld part 2 is similar to that of a general long hemostatic forceps. The distance between the two clamping parts 31 on each clamping head 3 is 3 cm.

[0027] In this embodiment, the elastic member 33 includes a spring piece 331. The two ends of the spring piece 331 are connected to the clamping part 31, and there is a gap between the middle part of the spring piece 331 and the clamping part 31. One side of the clamping part 31 connected to the spring piece 331 is designed in an arch shape. When clamping, it can only partially block the arterial blood flow, and the blood vessel can be completely blocked through the spring piece 331.

[0028] In this embodiment, the adjusting member 34 includes a screw 341. The screw 341 penetrates through the clamping part 31 and abuts against the middle part of the spring piece 331. The screw 341 is threadedly connected to the clamping part 31, and the axis of the screw 341 is perpendicular to the surface of the spring piece 331. The deformation of the spring piece 331 can be conveniently adjusted through the screw 341, so as to conveniently open and block the abdominal aorta.

[0029] In this embodiment, each clamping arm 1 is provided with a handheld part 2, and each handheld part 2 is provided with a latch 21. The two latches 21 are snap-connected. The length of the handheld arm is about 15 cm and it is bent to one side to be suitable for clamping deep tissues. The lengths of the two clamping arms 1 are about 3 cm and the distance between them is about 3 cm. During the operation, after the clamping member 32 clamps the aorta, the two latches 21 are opened to completely block the aorta, cut open the aorta, and insert an arterial catheter, so as to facilitate the insertion of the arterial catheter into the thoracic aorta.

[0030] In this embodiment, each clamping part 31 is provided with an anti-slip pattern 4. The anti-slip pattern 4 can form a grinding surface to facilitate the clamping member 32 to clamp the blood vessel.

[0031] In this embodiment, one of the clamping arms 1 is provided with a threaded hole 5, and the other clamping arm 1 is movably connected with a bolt 51 and can be firmly connected to the threaded hole 5 through the bolt 51. The two clamping arms 1 can be conveniently fixed through the bolt 51 and the threaded hole 5, which is convenient for the surgical injury of the two clamping members 32.

[0032] In this embodiment, each clamping arm 1 includes a first connecting rod 11 and a second connecting rod 12 connected to the clamping head 3. A sleeve 6 is provided on the first connecting rod 11, and a rod core 61 is provided on the second connecting rod 12. The rod core 61 is detachably inserted into the sleeve 6. The first connecting rod 11 can be conveniently removed through the sleeve 6 and the rod core 61, thus avoiding the influence of the too long clamping arm 1 on the subsequent surgical operation.

[0033] In this embodiment, a bullet hole 62 is provided on the sleeve 6. The bullet hole 62 vertically penetrates the wall of the sleeve 6. A bullet piece 63 is fixedly installed on the circumference of the rod core 61. The bullet piece 63 is provided with a bullet bead 64 away from the rod core 61 and can be clamped in the bullet hole 62 when the rod core 61 is inserted into the sleeve 6. Through the button in the form of the bullet bead 64 provided on the bullet hole 62 of the sleeve 6, the detachable connection of the first connecting rod 11 and the second connecting rod 12 can be conveniently realized; when the rod core 61 is inserted into the sleeve 6, the bullet bead 64 is clamped into the bullet hole 62, so that the sleeve 6 and the rod core 61 are fixedly connected; when disassembly is required, the bullet bead 64 is pressed down to sink, and the sleeve 6 and the rod core 61 can be separated.

[0034] In this embodiment, a sliding groove 65 is provided on the inner wall of the sleeve 6. The sliding groove 65 extends along the axis of the sleeve 6. One end of the sliding groove 65 communicates with the outside of the sleeve 6, and the other end of the sliding groove 65 communicates with the bullet hole 62 so that the bullet bead 64 can slide along the sliding groove 65 and can be movably clamped with the bullet hole 62. The sliding of the bullet bead 64 can be facilitated through the sliding groove 65, and the gap between the sleeve 6 and the rod core 61 can also be reduced.

[0035] In this embodiment, the sleeve 6 is a rhombic cylinder, and the rod core 61 is a rhombic rod. The rhombic structure can prevent rotation between the sleeve 6 and the rod core 61.

[0036] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art of this technology, the improvements and transformations obtained without departing from the technical concept of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A vascular clamp applicable to abdominal aorta occlusion and catheterization, comprising two articulated clamp arms (1), each of the clamp arms (1) is provided with a clamp head (3), and is characterized in that, Each of the jaw heads (3) is provided with two jaw parts (31) arranged at intervals. Two jaw parts (31) on one of the jaw heads (3) can be clamped corresponding to the two jaw parts (31) on the other jaw head (3) one by one to form two sets of clamping members (32). One of the two jaw parts (31) forming a clamping member (32) is provided with an elastic member (33) and an adjusting member (34). The elastic member (33) is arranged on one side of the jaw part (31) close to the other jaw part (31) forming the clamping member (32). The adjusting member (34) is connected to the elastic member (33) and can adjust the clamping distance between the elastic member (33) and the jaw part (31) when the other set of clamping members (32) is in a clamped state. The elastic member (33) includes a spring piece (331). Both ends of the spring piece (331) are connected to the jaw part (31), and there is a gap between the middle part of the spring piece (331) and the jaw part (31). The adjusting member (34) includes a screw (341). The screw (341) penetrates through the jaw part (31) and abuts against the middle part of the spring piece (331). The screw (341) is threadedly connected to the jaw part (31), and the axis of the screw (341) is perpendicular to the surface of the spring piece (331).

2. The vascular forceps applicable to abdominal aorta occlusion and catheterization according to claim 1, wherein Each of the jaw arms (1) is provided with a hand-held part (2). Each of the hand-held parts (2) is provided with a clamping block (21). The two clamping blocks (21) are connected by snap-fastening.

3. The vascular forceps applicable to abdominal aorta occlusion and catheterization according to claim 1, characterized in that, Each of the jaw parts (31) is provided with an anti-slip pattern (4).

4. The vascular forceps applicable to abdominal aorta occlusion and catheter placement according to claim 1, characterized in that, One of the jaw arms (1) is provided with a threaded hole (5). The other jaw arm (1) is movably connected with a bolt (51) and can be tightly connected to the threaded hole (5) through the bolt (51).

5. The vascular forceps applicable to abdominal aorta occlusion and catheterization according to any one of claims 1-4, characterized in that, Each of the jaw arms (1) includes a first connecting rod (11) and a second connecting rod (12) connected to the jaw head (3). A sleeve (6) is arranged on the first connecting rod (11). A rod core (61) is arranged on the second connecting rod (12). The rod core (61) is detachably inserted into the sleeve (6).

6. The vascular forceps applicable to abdominal aorta occlusion and catheterization according to claim 5, characterized in that, The sleeve (6) is provided with a bullet hole (62). The bullet hole (62) vertically penetrates the wall of the sleeve (6). A spring piece (63) is fixedly installed on the circumference of the rod core (61). The spring piece (63) is provided with a bullet (64) away from the rod core (61) and can be clamped in the bullet hole (62) when the rod core (61) is inserted into the sleeve (6).

7. The vascular forceps applicable to abdominal aorta occlusion and catheterization according to claim 6, characterized in that, A sliding groove (65) is arranged on the inner wall of the sleeve (6). The sliding groove (65) extends along the axis of the sleeve (6). One end of the sliding groove (65) communicates with the outside of the sleeve (6), and the other end of the sliding groove (65) communicates with the bullet hole (62) so that the bullet (64) can slide along the sliding groove (65) and can be movably clamped with the bullet hole (62).

8. The vascular forceps applicable to abdominal aorta occlusion and catheterization according to claim 7, wherein The sleeve (6) is a rhombic cylinder, and the rod core (61) is a rhombic rod.

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