Left atrium retractor for minimally invasive cardiac surgery

Abstract

The utility model provides a left atrium drag hook for minimally invasive cardiac surgery, and relates to the technical field of medical instruments, the left atrium drag hook comprises a traction section, a connecting section and a hooking section which are fixedly connected in sequence, the hooking section comprises a transition part, a hook handle and an inclined part, and the hook handle is fixedly connected to the end, away from the traction section, of the connecting section through the transition part; the inclined part is obliquely arranged at the end, away from the transition part, of the hook handle, and anti-skid structures are arranged on the hook handle and the inclined part. The device has the effects that the tissue at the incision is stably dragged and tensioned, so that the operation area can be quickly and stably exposed.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a left atrial retractor for minimally invasive cardiac surgery. Background Art

[0002] In minimally invasive heart surgery, small incision heart surgery and other surgeries, the pericardium needs to be incised to expose the surgical area of ​​the heart. After the pericardium is incised, the pericardium will still be in a state of wrapping the heart, and the pericardium needs to be pulled apart in the incision direction to expose the internal surgical area. Therefore, a retractor is needed to pry open the ventricular septum that blocks the field of vision. At the same time, the retractor is required to neither block the surgeon's line of sight nor interfere with the operation.

[0003] In the related art, a Chinese patent with application number CN201621039099.7 proposes a retractor for cardiac surgery, which is in the shape of a long strip and includes a handle, a first section retractor and a second section retractor in sequence. The first section retractor and the second section retractor are arranged at an angle at the inflection point, and a barb is provided inwardly at the end of the second section retractor. The first section retractor and the second section retractor are at an angle of 130 degrees. The outer side surface of the second section retractor is provided with an arc-shaped depression in the extension direction.

[0004] With regard to the above-mentioned related technologies, during minimally invasive heart surgery, the patient's chest and pericardium need to be cut open, and when the retractor is used to pull and expose the pericardial surgical area, the incisions in the chest and pericardium are both pulled open by the second section of the retractor. Although a barb is provided at the end of the second section of the retractor, as the retractor is pulled, the incision in the chest will slide along the inclined direction of the second section of the retractor and squeeze the incision in the pericardium, making it easy for the incision in the pericardium to slip out of the barb, which will seriously affect the exposure of the pericardial surgical area. At this time, it is necessary to add a retractor to pull and open the incision in the chest separately. This method will prolong the time of minimally invasive heart surgery and is very inconvenient to operate. Utility Model Content

[0005] In order to improve the problem that as the retractor is pulled, the incision at the chest cavity will slide along the inclined direction of the second section of the retractor and squeeze the incision at the pericardium, making the incision at the pericardium easy to slip out of the hook, which will seriously affect the exposure of the surgical area in the pericardium, the present application provides a left atrial retractor for minimally invasive heart surgery.

[0006] The present application provides a left atrial retractor for minimally invasive cardiac surgery using the following technical solution:

[0007] A left atrial retractor for minimally invasive cardiac surgery comprises a traction section, a connecting section and a hook-pulling section which are fixedly connected in sequence, wherein the hook-pulling section comprises a transition portion, a hook handle and an inclined portion, wherein the hook handle is fixedly connected to an end of the connecting section away from the traction section via the transition portion, the inclined portion is obliquely arranged on an end of the hook handle away from the transition portion, and anti-slip structures are arranged on both the hook handle and the inclined portion.

[0008] Furthermore, the connection between the traction section and the connecting section, and the connection between the transition section and the connecting section are both set at obtuse angles, and the end of the traction section away from the connecting section and the end of the transition section away from the connecting section point in opposite directions, the inclined section and the transition section are both located on the same side of the hook handle, and the inclined section and the hook handle are set at an obtuse angle.

[0009] Furthermore, the anti-slip structure is located on the surface of the hook handle and the inclined portion close to the transition portion.

[0010] Furthermore, the transition portion includes two transition rods, one end of the two transition rods is fixedly connected to the connecting section, and the two transition rods are distributed in a V shape, the hook handle includes two straight plates, the two straight plates are respectively fixedly connected to the ends of the two transition rods, and the two straight plates are arranged in parallel, the inclined portion is arranged as a U-shaped plate, the opening of the U-shaped plate faces the two straight plates, and the two straight plates are respectively fixedly connected to the two side walls of the opening end of the U-shaped plate.

[0011] Furthermore, a transition surface is provided at the connection between the straight plate and the transition rod, and the transition surface and the anti-slip structure are both located on the same surface of the straight plate.

[0012] Furthermore, the anti-slip structure is a plurality of grooves formed on the two straight plates and the U-shaped plate, and the plurality of grooves are spaced apart along the length direction of the hook and pull section.

[0013] Furthermore, the traction section includes a traction shaft fixedly connected to the connecting section and a sleeve fixed on the traction shaft away from the connecting section, and the sleeve is fixedly sleeved on the end of the traction shaft to form an anti-slip step between the traction shaft and the sleeve.

[0014] Furthermore, the sleeve is configured to be non-circular.

[0015] In summary, this application includes the following beneficial technical effects:

[0016] An anti-slip structure is arranged on the hook-pull section, so that when the hook-pull section is used to tension the tissue on one side of the incision, the tissue at the incision is not easily slipped on the hook handle and the inclined portion due to the action of the anti-slip structure. At the same time, the setting of the inclined portion also makes it difficult for the tissue at the incision to slip off the hook-pull section, ensuring that the surgical area can be exposed stably and quickly, thereby facilitating surgical operations on the surgical area. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a plan view of the overall structure of the embodiment of the present application.

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the overall structure of the embodiment of the present application.

[0020] Figure numerals: 1. sleeve; 2. traction shaft; 3. anti-slip step; 4. connecting section; 5. transition part; 6. hook handle; 7. inclined part; 8. transition surface; 9. anti-slip structure. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The present application embodiment discloses a left atrial retractor for minimally invasive cardiac surgery. Figure 1 and Figure 2 A left atrial retractor for minimally invasive cardiac surgery comprises a traction segment, a connecting segment 4 and a hook-pull segment which are fixedly connected in sequence. The connecting segment 4 stably connects the hook-pull segment to one end of the traction segment. When performing minimally invasive cardiac surgery, one only needs to hold the traction segment, then extend the hook-pull segment from the incision into the pericardium, and then pull the traction segment so that the hook-pull segment pulls the tissue on one side of the incision away from the incision, thereby achieving the effect of exposing the surgical field of view and assisting the surgical operation. In order to enable the hook-pull section to stably pull the tissue at the incision away from the incision, the hook-pull section includes a transition portion 5, a hook handle 6 and an inclined portion 7. The hook handle 6 is fixedly connected to the end of the connecting section 4 away from the traction section through the transition portion 5. The inclined portion 7 is obliquely arranged on the end of the hook handle 6 away from the transition portion 5, and an anti-slip structure 9 is arranged on both the hook handle 6 and the inclined portion 7. When the hook-pull section is used to pull the tissue on one side of the incision, the tissue at the incision is not easy to slip on the hook handle 6 and the inclined portion 7 under the action of the anti-slip structure 9. At the same time, the arrangement of the inclined portion 7 also makes it difficult for the tissue at the incision to slip off the hook-pull section, so that the surgical area can be stably and quickly exposed, thereby facilitating surgical operations on the surgical area.

[0023] Considering the convenience of left atrial hook operation in minimally invasive cardiac surgery, the traction segment and the connecting segment 4 should be avoided to prevent the visual field from being obstructed. Figure 1 and Figure 2 The connecting section 4 is made of a stainless steel pipe with a diameter of 5 mm, and the connection between the traction section and the connecting section 4 is set at an angle, and the size of the angle is not less than 90°. In actual operation, it is found that when the angle is set to an obtuse angle, it is more conducive to the operation of the operation. Therefore, in the embodiment of the present application, the connection between the traction section and the connecting section 4 is set at an obtuse angle. As for the angle between the transition portion 5 and the connecting section 4, it can be a straight angle or an obtuse angle. In the embodiment of the present application, the angle at the connection between the transition portion 5 and the connecting section 4 is also set to an obtuse angle, and the end of the traction section away from the connecting section 4 and the end of the transition portion 5 away from the connecting section 4 point in opposite directions. One end of the hook handle 6 is fixedly connected to the end of the transition portion 5 away from the connecting section 4, and the angle between the hook handle 6 and the transition portion 5 is also set to an obtuse angle, and the hook handle 6 and the connecting section 4 are bent in opposite directions at both ends of the transition portion 5. The inclined portion 7 is fixed on one end of the hook handle 6 away from the transition portion 5. The inclined portion 7 and the hook handle 6 are also arranged at an obtuse angle, and the angle between the inclined portion 7 and the hook handle 6 is 135° to 180°. The inclined portion 7 and the transition portion 5 are both located on the same side of the hook handle 6. At the same time, the anti-slip structure 9 is located on the surface of the hook handle 6 and the inclined portion 7 on the side close to the transition portion 5.

[0024] In order to enable the hook handle 6 to stably hook the tissue at the incision, refer to Figure 1 and Figure 2 The transition part 5 includes two transition rods made of stainless steel, one end of each of the two transition rods is fixedly connected to the connecting section 4, and the two transition rods are distributed in a V shape; the hook handle 6 includes two straight plates made of stainless steel, the two straight plates are fixedly connected to the ends of the two transition rods, and the two straight plates are parallel and spaced apart; in order to prevent the connection between the straight plate and the transition rod from scratching the tissue at the incision, a transition surface 8 is provided at the connection between the straight plate and the transition rod, so that the straight plate and the transition rod are smoothly connected, and the transition surface 8 and the anti-slip structure 9 are both located on the same surface of the straight plate. The inclined part 7 is set as a U-shaped plate made of stainless steel, the opening of the U-shaped plate faces the two straight plates, and the two straight plates are fixedly connected to the two side walls of the opening end of the U-shaped plate. At this time, when the retractor is used to pull and stretch the tissue at the incision, the two straight plates are stably pressed against the tissue at the incision, so that the retractor can stably and quickly pull the tissue on one side of the incision away from the incision, thereby exposing the surgical field of view.

[0025] For the setting of the anti-slip structure 9, refer to Figure 1 and Figure 2In the embodiment of the present application, the anti-slip structure 9 is a plurality of grooves provided on the two straight plates and the U-shaped plate. The plurality of grooves are spaced apart along the length direction of the hook-pull section, and the length direction of the grooves is consistent with the width direction of the straight plates. The width of the grooves is set to 30 mm. Under the joint action of the plurality of grooves, the retractor can smoothly pull the tissue at the incision for tensioning, ensuring that the surgical field can be quickly and stably exposed. In other embodiments, the anti-slip structure 9 is configured as anti-slip patterns provided on the two straight plates and the U-shaped plate, ensuring that the friction coefficient of the contact surface between the two straight plates and the U-shaped plate and the incision tissue is increased, thereby ensuring the stable traction of the incision tissue by the retractor.

[0026] Reference Figure 1 and Figure 2 The traction section includes a traction shaft 2 fixedly connected to the connecting section 4 and a sleeve 1 fixed on the traction shaft 2 away from the connecting section 4. The traction shaft 2 and the sleeve 1 are both made of stainless steel, and the traction shaft 2 is smoothly connected to one end of the connecting section 4. The sleeve 1 is fixedly sleeved on the end of the traction shaft 2, so that an anti-slip step 3 is formed between the traction shaft 2 and the sleeve 1. When the operator holds the traction section, the formation of the anti-slip step 3 can prevent the traction section from slipping out of the operator's hand when the traction hook is used to tension the tissue. Considering that when tensioning the tissue, it may be necessary to rotate the hook according to the exposure of the surgical area, the sleeve 1 is set to be non-circular, so that the operator can quickly drive the traction shaft 2, the connecting section 4 and the hook pull section to rotate through the non-circular sleeve 1, so that the surgical area is quickly exposed. The end of the sleeve 1 away from the traction shaft 2 is also fixedly connected to a cylindrical rod, which can be stably clamped by a surgical fixation arm, so that when performing a surgical operation, the hook can stably pull the tissue to open, thereby facilitating the operation.

[0027] The implementation principle of a left atrial retractor for minimally invasive cardiac surgery in an embodiment of the present application is as follows: when performing minimally invasive cardiac surgery, first hold the traction section and point the hook section to the incision; then insert the hook section from the incision in the chest cavity and extend it into the pericardium, at which time the inclined portion 7 of the hook section is located in the pericardium; then pull the traction section toward one side of the incision, and the traction section drives the hook section through the connecting section 4 to tension the tissue at the incision. Since the hook handle 6 and the inclined portion 7 of the hook section are both provided with an anti-slip structure 9, when the hook section tensions the tissue at the incision, the tissue at the incision is not easy to slip on the hook handle 6 and the inclined portion 7 under the action of the anti-slip structure 9. At the same time, the setting of the inclined portion 7 also makes it difficult for the tissue at the incision to slip off the hook section, so that the surgical area can be stably and quickly exposed, thereby facilitating surgical operations on the surgical area. After the surgical area is exposed, the traction segment can be supported and fixed with the help of a surgical fixation arm to ensure that the retractor can stably pull the tissue open during the operation, thereby facilitating the operation.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A left atrial retractor for minimally invasive cardiac surgery, characterized in that: It comprises a traction section, a connection section and a hook-pull section which are fixedly connected in sequence, the hook-pull section comprises a transition section, a hook handle and an inclined section, the hook handle is fixedly connected to an end of the connection section away from the traction section through the transition section, the inclined section is inclinedly arranged on an end of the hook handle away from the transition section, and anti-slip structures are arranged on both the hook handle and the inclined section.

2. A left atrial retractor for minimally invasive cardiac surgery according to claim 1, characterized in that: The connection between the traction section and the connecting section, and the connection between the transition section and the connecting section are both set at obtuse angles, and the end of the traction section away from the connecting section and the end of the transition section away from the connecting section point in opposite directions, the inclined section and the transition section are both located on the same side of the hook handle, and the inclined section and the hook handle are set at an obtuse angle.

3. A left atrial retractor for minimally invasive cardiac surgery according to claim 2, characterized in that: The anti-slip structure is located on the surface of the hook handle and the inclined portion on a side close to the transition portion.

4. A left atrial retractor for minimally invasive cardiac surgery according to claim 3, characterized in that: The transition portion includes two transition rods, one end of the two transition rods is fixedly connected to the connecting section, and the two transition rods are distributed in a V shape. The hook handle includes two straight plates, the two straight plates are respectively fixedly connected to the ends of the two transition rods, and the two straight plates are arranged in parallel. The inclined portion is arranged as a U-shaped plate, the opening of the U-shaped plate faces the two straight plates, and the two straight plates are respectively fixedly connected to the two side walls of the opening end of the U-shaped plate.

5. A left atrial retractor for minimally invasive cardiac surgery according to claim 4, characterized in that: A transition surface is provided at the connection between the straight plate and the transition rod, and the transition surface and the anti-slip structure are both located on the same surface of the straight plate.

6. A left atrial retractor for minimally invasive cardiac surgery according to claim 4, characterized in that: The anti-slip structure is a plurality of grooves formed on the two straight plates and the U-shaped plate, and the plurality of grooves are distributed at intervals along the length direction of the hook and pull section.

7. A left atrial retractor for minimally invasive cardiac surgery according to claim 1, characterized in that: The traction section comprises a traction shaft fixedly connected to the connection section and a sleeve fixed on the traction shaft away from the connection section. The sleeve is fixedly sleeved on the end of the traction shaft so that an anti-slip step is formed between the traction shaft and the sleeve.

8. A left atrial retractor for minimally invasive cardiac surgery according to claim 7, characterized in that: The sleeve is configured in a non-circular shape.

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