An extracorporeal circulation cannula forceps for small incision surgery

Abstract

The utility model discloses a kind of extracorporeal circulation intubation forceps for small incision operation, including left forceps and right forceps, left forceps one end is set up left pipe structure of adjustable pipe angle of opposing, right forceps one end is set up and the right pipe structure of corresponding left pipe structure;Left adjusting part one side is set left arc clamping plate, right adjusting part one side is set right arc clamping plate;Left forceps and right forceps are connected by self-locking structure, the application can be clamped to intravenous cannula, the angle of intravenous cannula can be adjusted simultaneously, intravenous cannula is accurately inserted into vena cava, the accuracy of intravenous cannula placement is improved, and the clamping force of intravenous cannula can be automatically locked, prevent intravenous cannula from loosening, and facilitate to push intravenous cannula.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to an extracorporeal circulation cannulation forceps for small incision surgery. Background Technology

[0002] Extracorporeal circulation (ECG) is a life support technique that uses a series of specialized artificial devices to drain venous blood returning to the heart outside the body, where it undergoes artificial gas exchange, temperature regulation, and filtration before being returned to the body's arterial system. Because the artificial devices replace bodily functions during ECG, it is also known as cardiopulmonary bypass. The process of draining venous blood typically involves a small incision in the armpit or intercostal space to insert a catheter into the superior vena cava, from which venous blood is drained out of the body.

[0003] For example, the utility model disclosed in the authorization announcement number CN208910393U is a special holding forceps for arterial and venous cannulation in anterolateral small incision cardiac surgery, which includes a left forceps, a right forceps, and a connecting pin; the left forceps consists of a left handle, a left anterior transmission rod, a left connecting part, a left posterior transmission rod, and a left forceps head; the right forceps consists of a right handle, a right anterior transmission rod, a right connecting part, a right posterior transmission rod, and a right forceps head; the connecting pin consists of a pin seat and a pin head. This technical solution can reduce the possibility of cannula retraction due to poor adhesion between the cannula and the cannula wall during aortic cannulation in such minimally invasive surgeries, or even cannula slippage caused by unstable instrument clamping. It can also greatly improve the flexibility of cannula tip turning and solve the difficulty of inserting venous cannulas into the superior vena cava. However, the above technical solution has the following shortcomings: since the superior vena cava is not vertical, the above solution cannot adjust the angle of cannulation during use, making it difficult to accurately insert the venous cannula into the superior vena cava. At the same time, it cannot automatically maintain the clamping force of the venous cannula, and it cannot quickly release the venous cannula after cannulation. Therefore, we propose an extracorporeal circulation cannulation clamp for small incision surgery. Utility Model Content

[0004] The purpose of this invention is to provide an extracorporeal circulation cannulation forceps for small incision surgery, in order to solve the problems mentioned in the background art. Because the superior vena cava is not vertical, the existing technology cannot adjust the angle of the cannula during use, making it inconvenient to accurately insert the venous cannula into the superior vena cava. At the same time, it cannot automatically maintain the clamping force of the venous cannula, and it cannot quickly release the venous cannula after insertion.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an extracorporeal circulation cannulation forceps for small incision surgery, comprising a left forceps and a right forceps, wherein one end of the left forceps is provided with a left clamping structure that can adjust the cannulation angle, and one end of the right forceps is provided with a right clamping structure corresponding to the left clamping structure.

[0006] The left clamp structure includes a left adjustment part, which is located at one end of the left clamp. A left connecting buckle is provided on one side of the left adjustment part. The left connecting buckle is rotatably connected to the left adjustment port through a left damping shaft. The left adjustment port is located on one side surface of the left clamp.

[0007] The right clamp tube structure includes a right adjustment part, which is located at one end of the right clamp. A right connecting buckle is provided on one side of the right adjustment part. The right connecting buckle is rotatably connected to the right adjustment port through a right damping rotating shaft. The right adjustment port is located on one side of the right clamp.

[0008] The left adjustment part is provided with a left arc-shaped clamp on one side, and the right adjustment part is provided with a right arc-shaped clamp on one side.

[0009] The left and right clamps are connected by a self-locking structure.

[0010] Preferably, an arc-shaped rod is provided on one side surface of the left adjustment part, one end of which can be inserted into an arc-shaped positioning port. The arc-shaped positioning port is provided on one side of the right adjustment part, which can connect the left adjustment part and the right adjustment part, making it convenient to adjust the angles of the left adjustment part and the right adjustment part simultaneously.

[0011] Preferably, the left clamp has a central adjustment port in the middle, and the right clamp is disposed inside the central adjustment port. The right clamp is rotatably connected to the central adjustment port via a rotating shaft, which enables the left clamp and the right clamp to rotate.

[0012] Preferably, the self-locking structure includes an arc-shaped connecting plate, which is disposed on one side surface of the right clamp. Multiple sets of ratchet teeth are provided on one side of the arc-shaped connecting plate, and a locking pin that engages with the ratchet teeth is provided on one side of the left clamp. The locking pin is disposed at one end of the support buckle, which can automatically lock the force of intravenous catheter insertion.

[0013] Preferably, the support buckle is rotatably mounted on the left clamp side via a bearing shaft, and one end of the support buckle extends to the left handle side, making it easy for the operator to quickly separate the locking pin from the ratchet and thus release the intravenous catheter.

[0014] Preferably, one side surface of the support buckle is also provided with an arc-shaped buckle groove, which can position the operator's fingers and facilitate pushing the support buckle to rotate.

[0015] Preferably, a guide block is provided on one side surface of the locking pin, and the guide block is slidably disposed in an arc-shaped guide groove, which is disposed on one side surface of the left clamp, so as to guide the movement of the locking pin.

[0016] Preferably, a tension spring is provided on one side surface of the arc-shaped guide groove, and one end of the tension spring is connected to the guide block, which can automatically lock the locking pin and the ratchet.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] (1) This application can clamp the venous catheter and adjust the insertion angle of the venous catheter, which makes it easier to accurately insert the venous catheter into the vena cava and improves the accuracy of venous catheter insertion.

[0019] (2) This utility model can automatically lock the clamping force of the intravenous catheter to prevent the intravenous catheter from loosening, and at the same time facilitate the pushing of the intravenous catheter. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the left clamping tube structure and the right clamping tube structure in this utility model;

[0022] Figure 3 This is a schematic diagram of the self-locking structure in this utility model;

[0023] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0024] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0025] Figure 6 This is a schematic diagram of the structure of the left adjustment part and the adjustment part in the angle adjustment state in this utility model;

[0026] In the diagram: 1. Left grip; 2. Right grip; 3. Right clamp; 4. Left clamping tube structure; 5. Right clamping tube structure; 6. Left clamp; 7. Self-locking structure; 8. Center adjustment port; 9. Rotating shaft; 41. Left adjustment port; 42. Left connecting buckle; 43. Left arc-shaped clamp; 44. Arc-shaped rod; 45. Left adjustment part; 51. Right adjustment port; 52. Right connecting buckle; 53. Arc-shaped positioning port; 54. Right adjustment part; 55. Right arc-shaped clamp; 71. Limiting plate; 72. Arc-shaped connecting plate; 73. Ratchet; 74. Bearing shaft; 75. Support buckle; 76. Arc-shaped locking groove; 77. Locking pin; 78. Tension spring; 79. Arc-shaped guide groove; 80. Guide block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1 , Figure 2 as well as Figure 6 This utility model provides a technical solution: an extracorporeal circulation cannulation forceps for small incision surgery, including a left forceps 6 and a right forceps 3. One end of the left forceps 6 is provided with a left clamping structure 4 that can adjust the insertion angle of the cannula. One end of the right forceps 3 is provided with a right clamping structure 5 corresponding to the left clamping structure 4. The other end of the left forceps 6 is provided with a left handle 1, and the other end of the right forceps 3 is provided with a right handle 2, which makes it convenient for the operator to hold.

[0029] The left clamp structure 4 includes a left adjustment part 45, which is located at one end of the left clamp 6. A left connecting buckle 42 is provided on one side of the left adjustment part 45. The left connecting buckle 42 is rotatably connected to the left adjustment port 41 through a left damping rotating shaft. The left adjustment port 41 is located on one side surface of the left clamp 6.

[0030] The right clamp structure 5 includes a right adjustment part 54, which is located at one end of the right clamp 3. A right connecting buckle 52 is provided on one side of the right adjustment part 54. The right connecting buckle 52 is rotatably connected to the right adjustment port 51 through a right damping shaft. The right adjustment port 51 is located on one side of the right clamp 3.

[0031] Specifically, by setting the left damping shaft and the right damping shaft, the angles of the left adjustment part 45 and the right adjustment part 54 can be positioned.

[0032] A left arc-shaped clamp 43 is provided on one side of the left adjustment section 45, and a right arc-shaped clamp 55 is provided on one side of the right adjustment section 54. Specifically, the left arc-shaped clamp 43 and the right arc-shaped clamp 55 are arranged parallel to the left clamp 6 and the right clamp 3, so that the entire device can be arranged horizontally with the venous catheter, which facilitates the insertion and pushing of the venous catheter.

[0033] First, by pressing the left handle 1 and the right handle 2 simultaneously with both fingers, the left clamp 6 and the right clamp 3 are rotated. The left clamp 6 and the right clamp 3 rotate the left adjustment part 45 and the right adjustment part 54, which in turn move the left arc-shaped clamp 43 and the right arc-shaped clamp 55. The venous catheter is clamped and fixed by the left arc-shaped clamp 43 and the right arc-shaped clamp 55. Then, according to the direction of the vena cava, the left adjustment part 45 and the right adjustment part 54 are pushed. The left adjustment part 45 and the right adjustment part 54 respectively drive the left connecting buckle 42 and the right connecting buckle 52 to rotate in the left adjustment port 41 and the right adjustment port 51. The angle of the left adjustment part 45 and the right adjustment part 54 is positioned by the left damping shaft and the right damping shaft, and then the insertion angle of the venous catheter is adjusted. Finally, the venous catheter is inserted into the patient's vena cava through a small surgical incision using this device.

[0034] Furthermore, an arc-shaped rod 44 is provided on one side surface of the left adjustment part 45. One end of the arc-shaped rod 44 can be inserted into the arc-shaped positioning port 53. The arc-shaped positioning port 53 is located on one side of the right adjustment part 54. When the left arc-shaped clamp 43 and the right arc-shaped clamp 55 fix the intravenous catheter, the arc-shaped rod 44 is inserted into the arc-shaped positioning port 53, which can connect the left adjustment part 45 and the right adjustment part 54, making it convenient to adjust the angle of the left adjustment part 45 and the right adjustment part 54 simultaneously.

[0035] Furthermore, a central adjustment port 8 is provided in the middle of the left clamp 6, and a right clamp 3 is provided inside the central adjustment port 8. The right clamp 3 is rotatably connected to the central adjustment port 8 through a rotating shaft 9, so that the right clamp 3 can rotate inside the central adjustment port 8 through the rotating shaft 9, thereby enabling the left clamp 6 and the right clamp 3 to rotate.

[0036] Please see Figures 3-5 The left clamp 6 and the right clamp 3 are connected by a self-locking structure 7. The self-locking structure 7 includes an arc-shaped connecting plate 72, which is disposed on one side of the right clamp 3. Multiple sets of ratchet teeth 73 are disposed on one side of the arc-shaped connecting plate 72. A locking pin 77 that engages with the ratchet teeth 73 is disposed on one side of the left clamp 6. The locking pin 77 is disposed at one end of the support buckle 75, which can automatically lock the force of intravenous catheter insertion.

[0037] The support buckle 75 is rotatably mounted on one side of the left clamp 6 via the bearing shaft 74, and one end of the support buckle 75 extends to the left handle 1, which makes it easy for the operator to quickly separate the locking pin 77 from the ratchet 73 and then release the intravenous catheter. An arc-shaped buckle groove 76 is also provided on one side of the support buckle 75, which can position the operator's fingers and make it easy to push the support buckle 75 to rotate.

[0038] A guide block 80 is provided on one side surface of the locking pin 77. The guide block 80 is slidably disposed in the arc-shaped guide groove 79. The arc-shaped guide groove 79 is disposed on one side surface of the left clamp 6 and can guide the movement of the locking pin 77. A tension spring 78 is provided on one side surface of the arc-shaped guide groove 79. One end of the tension spring 78 is connected to the guide block 80 and can automatically lock the locking pin 77 and the ratchet 73.

[0039] When the left clamp 6 and right clamp 3 are clamping the venous catheter, the right clamp 3 moves the arc-shaped connecting plate 72, which in turn moves the ratchet 73 along the locking pin 77. The locking pin 77 rotates the support buckle 75, and at the same time, the locking pin 77 moves the guide block 80 within the arc-shaped guide groove 79. The guide block 80 moves and stretches the tension spring 78. After the left arc-shaped clamp 43 and right arc-shaped clamp 55 clamp and fix the venous catheter, the pull rod drives the support buckle 75 to reset and rotate, and the locking pin 77 engages with the corresponding ratchet 73, thereby automatically locking the clamping force of the left clamp 6 and right clamp 3.

[0040] After the intubation operation is completed, the finger is inserted into the arc-shaped latching groove 76, and the support buckle 75 is pushed. The support buckle 75 rotates, which drives the locking pin 77 to rotate and separates the locking pin 77 from the ratchet 73. This allows the angle of the left clamp 6 and the right clamp 3 to be adjusted, making it easier to release the intravenous catheter.

[0041] Furthermore, a limiting plate 71 is provided at one end of the arc-shaped connecting plate 72 to prevent the locking pin 77 from separating from the arc-shaped connecting plate 72.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cardiopulmonary bypass forceps for small incision surgery, comprising a left forceps (6) and a right forceps (3), characterized in that: The left clamp (6) is provided with a left clamping tube structure (4) with an adjustable tube placement angle at one end, and the right clamp (3) is provided with a right clamping tube structure (5) corresponding to the left clamping tube structure (4) at one end. The left clamp tube structure (4) includes a left adjustment part (45), which is located at one end of the left clamp (6). A left connecting buckle (42) is provided on one side of the left adjustment part (45). The left connecting buckle (42) is rotatably connected to the left adjustment port (41) through a left damping shaft. The left adjustment port (41) is located on one side surface of the left clamp (6). The right clamp tube structure (5) includes a right adjustment part (54), which is located at one end of the right clamp (3). A right connecting buckle (52) is provided on one side of the right adjustment part (54). The right connecting buckle (52) is rotatably connected to the right adjustment port (51) through a right damping shaft. The right adjustment port (51) is located on one side of the right clamp (3). The left adjustment part (45) is provided with a left arc-shaped clamp (43) on one side, and the right adjustment part (54) is provided with a right arc-shaped clamp (55) on one side. The left clamp (6) and the right clamp (3) are connected by a self-locking structure (7).

2. The extracorporeal circulation cannulation forceps for small incision surgery according to claim 1, characterized in that: An arc-shaped rod (44) is provided on one side surface of the left adjustment part (45). One end of the arc-shaped rod (44) can be inserted into the arc-shaped positioning port (53). The arc-shaped positioning port (53) is provided on one side of the right adjustment part (54).

3. The extracorporeal circulation cannulation forceps for small incision surgery according to claim 1, characterized in that: The left clamp (6) is provided with a central adjustment port (8) in the middle, and the right clamp (3) is provided inside the central adjustment port (8). The right clamp (3) is rotatably connected to the central adjustment port (8) through a rotating shaft (9).

4. The extracorporeal circulation cannulation forceps for small incision surgery according to claim 1, characterized in that: The self-locking structure (7) includes an arc-shaped connecting plate (72), which is disposed on one side surface of the right clamp (3). Multiple sets of ratchet teeth (73) are disposed on one side of the arc-shaped connecting plate (72), and a locking pin (77) that engages with the ratchet teeth (73) is disposed on one side of the left clamp (6). The locking pin (77) is disposed at one end of the support buckle (75).

5. The extracorporeal circulation cannulation forceps for small incision surgery according to claim 4, characterized in that: The support buckle (75) is rotatably mounted on the left clamp (6) side via the bearing shaft (74), and one end of the support buckle (75) extends to the left handle (1) side.

6. The extracorporeal circulation cannulation forceps for small incision surgery according to claim 5, characterized in that: An arc-shaped fastening groove (76) is also provided on one side surface of the support buckle (75).

7. The extracorporeal circulation cannulation forceps for small incision surgery according to claim 4, characterized in that: A guide block (80) is provided on one side surface of the latch (77), and the guide block (80) is slidably disposed in the arc-shaped guide groove (79), which is disposed on one side surface of the left clamp (6).

8. The extracorporeal circulation cannulation forceps for small incision surgery according to claim 7, characterized in that: A tension spring (78) is provided on one side surface of the arc-shaped guide groove (79), and one end of the tension spring (78) is connected to the guide block (80).

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