A liver and gall surgery retractor

Abstract

The application discloses a liver and gall surgery traction device and belongs to the technical field of medical devices, which comprises a main support, wherein a groove is arranged on the main support; two movable plates are arranged in the groove region of the main support; a plurality of adsorbers are arranged on the movable plates; a negative pressure suction device capable of controlling the work of the plurality of adsorbers on the two movable plates is arranged on the two sides of the main support; the negative pressure suction port of the negative pressure suction device is communicated with the corresponding adsorbers through a drainage pipeline; and a bandage is arranged at the two ends of the main support. The plurality of adsorbers are used for adsorbing the skin on both sides of the incision, and the displacement of the movable plates is adjusted, so that the plurality of adsorbers can limit the skin tissue adsorbed when the traction hook pulls open the incision to the two sides in the subsequent operation process, the incision pulled open by the traction hook is not pulled by the gravity of the waist and abdominal fat, muscle and skin tissue on the two sides, and further expansion of the surgical incision crack is avoided.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a traction device for hepatobiliary surgery. Background Technology

[0002] In open hepatobiliary surgery, adequate exposure of the surgical field is crucial for ensuring operational safety and improving surgical efficiency. Clinically, manual traction hooks are routinely used to pull the abdominal wall incision open to expose deep tissues. However, this traditional method has many inherent defects and can no longer meet the needs of refined, minimally invasive, and humane surgeries. For example, after incising the patient's abdominal skin, traction hooks are used to pull the incision open to expand the incision area and fully expose the hepatobiliary region to the surgical operation. However, some patients have a large amount of fat and muscle tissue on both sides of their waist and abdomen due to their large weight. After the abdominal incision is pulled by the traction hooks, the skin tissue at the incision site cut by the scalpel will break and lose the mutual traction force. During the operation, the patient is in a supine position, and the incision will be pulled by the gravity of the fat, muscles, and skin tissue on both sides of the waist and abdomen, which will cause secondary pulling on the incision and thus cause the cracks at both ends of the incision to expand. This will lead to secondary damage to the surgical incision site and affect the postoperative wound healing. Summary of the Invention

[0003] This invention provides a traction device for hepatobiliary surgery to solve the aforementioned technical problems.

[0004] The present invention adopts the following technical solution: it includes a main support; the main support is provided with a groove extending through both the front and rear sides; the groove area of ​​the main support is provided with two movable plates, both of which can move towards each other and away from each other along the side trajectory of the main support within the groove; multiple adsorbers are arranged sequentially on the movable plates; negative pressure suction devices that can control the multiple adsorbers on the two movable plates to work independently are provided on both sides of the main support; the negative pressure suction port of the negative pressure suction device is connected to the corresponding adsorber through a drainage pipe; and straps are provided at both ends of the main support.

[0005] Furthermore, the middle section of the main support is designed in an arc shape, so that the arc-shaped cross-sectional area of ​​the main support can cover the surface of the human abdomen.

[0006] Furthermore, the main support is provided with sliding grooves that extend through both the inner and outer sides of the groove on both sides; guide rods are fixedly provided at both ends of the movable plate, and the guide rods extend from the groove on the main support to the corresponding sliding grooves.

[0007] Furthermore, a guide rod on the movable plate passes through the corresponding groove and extends a distance to the outside of the main support; an adjusting component is provided on the extended end of the guide rod; threads are provided on the guide rod; the adjusting component has a threaded groove extending to the outside inside, and the threaded groove portion of the adjusting component is fitted onto the threaded portion of the guide rod to form a threaded connection.

[0008] Furthermore, the adsorber includes an adsorption plate; the adsorption plate is disposed on a movable plate; a suction cup is disposed on the adsorption plate, and the bottom end of the suction cup is provided with an adsorption port that can be attached to the skin surface; the top end of the suction cup is connected to the drainage tube; the suction cup is made of a skin-friendly material.

[0009] Furthermore, the adsorption plate is provided with a limiting groove that runs through both the upper and lower sides; the movable plate is provided with threaded holes corresponding to each adsorption plate; and the limiting groove on the adsorption plate is provided with bolts that are compatible with the threaded holes.

[0010] Furthermore, a hand-tightening component that can be operated by hand is fixedly provided at the top of the bolt.

[0011] Furthermore, a support pad is fixedly installed on the inner side of the main support corresponding to the patient's waist and abdomen areas; an adhesive coating is provided on the outer side of the support pad.

[0012] Furthermore, a flexible pad is fixedly provided at the bottom of the movable plate, and an adhesive coating is provided on the outer side of the pad.

[0013] The above-described at least one technical solution adopted in the embodiments of the present invention can achieve the following beneficial effects: Firstly, this invention uses multiple suction devices to adhere to the skin on both sides of the incision. Combined with the displacement adjustment of the movable plate, this allows the multiple suction devices to limit the adsorbed skin tissue when the traction hook pulls the incision open to both sides during subsequent surgery. This prevents the incision from being pulled open by the traction hook from being pulled by the gravity of the abdominal fat, muscles, and skin tissue on both sides, thereby avoiding further expansion of the surgical incision crack.

[0014] Secondly, the present invention, through the combination of negative pressure adsorption traction structure and movable plate, can also achieve stable traction of the skin around the surgical incision in hepatobiliary surgery, and under certain circumstances, can replace the traditional manual hand-held retractor, which can significantly reduce the manpower consumption during operation, avoid traction shaking and displacement caused by assistant fatigue, and improve the stability and continuity of surgical field exposure.

[0015] Thirdly, the present invention uses a multi-point adsorption method with multiple suction cups to replace the rigid point pressure of the traditional hook with large-area flexible contact, which effectively disperses the tensile stress and can avoid secondary damage such as pressure injury, contusion, and tearing at the incision edge. It can further reduce the incidence of postoperative complications such as subcutaneous hematoma, tissue edema, and scar hyperplasia, and is more conducive to the rapid healing of the postoperative incision in clinical applications.

[0016] Fourth, the present invention features a locking structure for the guide rod and adjusting components, which enables the locking function after stepless adjustment of the movable plates in opposite directions. It can be finely adjusted in conjunction with the adsorption plate and can flexibly adjust the traction position and range according to different patient body types, incision lengths and skin conditions, thus adapting to clinical hepatobiliary surgery operations.

[0017] Fifth, the support pad and pad block in this invention, after adhering to the patient's skin, can effectively counteract the downward pull of abdominal fat and muscle tissue caused by gravity in obese patients, prevent the incision from being passively expanded during the operation, and maintain the stability of the incision shape. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ; Figure 4 This is a partial structural diagram of the present invention. Figure 1 ; Figure 5 This is a partial structural diagram of the present invention. Figure 2 ; Figure 6 A schematic diagram of the main support structure; Figure 7 Schematic diagram of the structure of the adsorber and the movable plate Figure 1 ; Figure 8 This is a schematic diagram of the bottom structure of the adsorber and the movable plate; Figure 9 Side view of the adsorber and the movable plate; Figure 10 Schematic diagram of the structure of the adsorber and the movable plate Figure 2 .

[0019] Figure Labels Main support 1, groove 11, negative pressure suction device 12, drainage pipe 13, slide 14, support pad 15; 2. Movable plate; 21. Guide rod; 22. Adjusting component; 23. Threaded hole; 24. Pad. 3. Adsorber, 31. Adsorption plate, 311. Limiting groove, 32. Suction cup, 33. Bolt, 34. Hand-tightening part. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0021] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] This invention provides a hepatobiliary surgery traction device, including a main support 1; the main support 1 has a groove 11 extending through both the front and rear sides; two movable plates 2 are provided in the groove 11 area of ​​the main support 1, and both movable plates 2 can move towards each other and away from each other within the groove 11 along the side trajectory of the main support 1; multiple suction devices 3 are arranged sequentially on the movable plates 2; negative pressure suction devices 12 are provided on both sides of the main support 1, which can control the multiple suction devices 3 on the two movable plates 2 to work independently; the negative pressure suction port of the negative pressure suction device 12 is connected to the corresponding suction device 3 through a drainage pipe 13; straps are provided at both ends of the main support 1, the outer side of one end of the strap of the main support 1 is provided with a Velcro hook, and the inner side of the other end is provided with a matching Velcro surface; the middle section of the main support 1 is arc-shaped, so that the arc-shaped cross-sectional area of ​​the main support 1 can cover the surface of the human abdomen. In clinical practice, during open hepatobiliary surgery, after incising the abdominal skin, traction hooks are used to widen the incision and fully expose the liver and gallbladder to the surgical area. However, some patients, due to their larger weight, have thick layers of fat and muscle tissue on both sides of their abdomen. When the abdominal incision is pulled by the traction hooks, the skin tissue at the incision site, after being cut by the scalpel, will break and lose the mutual traction force. During the surgery, the patient is in a supine position, and the incision is subjected to the gravitational traction of the fat, muscles, and skin tissue on both sides of the abdomen, causing secondary pulling on the incision and widening the cracks at both ends of the incision. This leads to secondary damage to the surgical incision site and affects the postoperative wound recovery. Therefore, this invention can apply a traction force towards the middle to the skin surface on both sides of the surgical incision, so that the skin tissue on both sides of the incision is no longer subjected to the gravitational traction of the fat, muscles, and skin tissue on both sides of the abdomen, thus preventing the incision cracks from widening.

[0023] During the procedure, the main support 1 should be placed in the area above the patient's abdominal liver and gallbladder surgery, ensuring that the incision is within the groove 11 area on the main support 1. Then, adjust the two movable plates 2 to move the corresponding multiple suction devices 3 to the appropriate positions outside the traction hooks on both sides of the abdominal incision, i.e., the movable plates 2 are between the traction hooks and one side of the patient's waist and abdomen. Then, attach the suction end of the suction device 3 to the patient's skin surface. Activate the negative pressure suction device 12 to control the formation of negative pressure airflow inside the drainage tube 13, and allow the suction device 3 to adhere to the skin on both sides of the incision. In clinical practice, the two movable plates 2 can be moved slightly to the sides of the incision. This distance ensures sufficient traction hooks to pull the incision open to the surgical operating space. After the multiple suction devices 3 adhere to the skin on both sides of the incision, there is enough loose skin tissue between the incision and the suction devices 3 to be pulled by the traction hooks. This allows the suction devices 3 to limit the adsorbed skin tissue when the traction hooks pull the incision open to the sides during subsequent surgery, preventing the incision from being pulled open by the gravity of the abdominal fat, muscles, and skin tissue on both sides, thus avoiding further expansion of the surgical incision.

[0024] The main support 1 is provided with sliding grooves 14 that penetrate both the inner and outer sides of the groove 11 on both sides; guide rods 21 are fixedly provided at both ends of the movable plate 2, and the guide rods 21 extend from the groove 11 on the main support 1 to the corresponding sliding grooves 14.

[0025] A guide rod 21 on the movable plate 2 passes through the corresponding slide groove 14 and extends a distance to the outside of the main support 1; an adjustment element 22 is provided on the extended end of the guide rod 21; each guide rod 21 is provided with threads; the interior of the adjustment element 22 is provided with a threaded groove that extends to the outside, and the threaded groove part of the adjustment element 22 is sleeved on the threaded part of the guide rod 21 to form a threaded connection.

[0026] When moving the movable plate 2, the displacement of the movable plate 2 can be directly controlled. The guide rods 21 at both ends of the movable plate 2 will slide along the sliding grooves 14 on both sides of the main support 1. The sliding grooves 14 will guide the movement of the guide rods 21, so that the movable plate 2 can only move within the groove 11 area of ​​the main support 1.

[0027] After the movable plate 2 has moved, the rotatable adjusting member 22 is rotated so that it spirals along the threaded path on the corresponding guide rod 21 and gradually approaches the main support 1. The bottom of the adjusting member 22 will form a stop state after contacting the main support 1. In order to further prevent the adjusting member 22 from loosening, a silicone coating can be provided on the bottom end of the adjusting member 22. After the adjusting member 22 contacts the main support 1, it will squeeze the silicone coating to increase the contact area and increase the contact friction. At this time, the movable state of the guide rod 21 in the slide groove 14 on the main support 1 will be restricted, and it will not be able to rotate in its natural state to lock the movable plate 2 after it has moved.

[0028] The adsorber 3 includes an adsorption plate 31; the adsorption plate 31 is disposed on the movable plate 2; the adsorption plate 31 is provided with a suction cup 32, the bottom end of the suction cup 32 is provided with an adsorption port that can be attached to the skin surface; the top end of the suction cup 32 is connected to the drainage tube 13; wherein, the suction cup 32 is made of skin-friendly material.

[0029] The negative pressure suction device 12 in this invention is prior art and is only used as a device to provide negative pressure suction function for the suction cup 32 in this invention; After the suction port at the bottom of the suction cup 32 is attached to the patient's skin surface, the negative pressure airflow generated by the negative pressure suction device 12 will create a negative pressure state inside the drainage tube 13 and inside the suction cup 32, so that the suction port of the suction cup 32 attached to the skin surface will pull the skin and follow the movement of the movable plate 2 to pull and control the patient's abdominal skin.

[0030] The adsorption plate 31 is provided with a limiting groove 311 that runs through both the upper and lower sides; the movable plate 2 is provided with a threaded hole 23 corresponding to each adsorption plate 31; the limiting groove 311 on the adsorption plate 31 is provided with a bolt 33 that matches the threaded hole 23, and the top of the bolt 33 is fixedly provided with a hand-tightening part 34 that can be operated by hand.

[0031] Because the size of the surgical incision and the condition of the patient's abdominal skin vary, the position of the suction cup 32 on the suction plate 31 needs to be adjusted in clinical applications. First, when fixing the adsorption plate 31, the bolt 33 can be passed through the limiting groove 311 from top to bottom and placed into the threaded hole 23 of the movable plate 2. Then, the hand-tightening part 34 is rotated to drive the bolt 33 to rotate downward and be completely screwed into the threaded hole 23, so that the bottom end of the hand-tightening part 34 contacts the adsorption plate 31 and forms a stop state, thereby pressing the adsorption plate 31 downward and fixing it on the movable plate 2 so that it cannot rotate or move. Secondly, when the suction cup 32 needs to be displaced, the hand-tightening component 34 needs to be rotated in the opposite direction to rotate the bolt 33 upwards a short distance, causing the bottom end of the hand-tightening component 34 to separate from the adsorption plate 31, thus allowing the adsorption plate 31 to be in a movable state. The bolt 33 is positioned within the limiting groove 311. When moving the adsorption plate 31, the limiting groove 311 area on the adsorption plate 31 will restrict the adsorption plate 31 from exceeding the range of the limiting groove 311. During the movement of the adsorption plate 31, the suction cup 32 can move accordingly. After the displacement adjustment of the suction cup 32 is completed, the hand-tightening component 34 can be rotated again to rotate the bolt 33 back into the threaded hole 23, and the bottom end of the hand-tightening component 34 will form a positioning and locking effect on the adsorption plate 31.

[0032] In clinical applications, this invention can replace the surgeon's assistant in using traction hooks to control the traction of surgical incisions, reducing the number of people involved in traction and allowing the surgeon more operational space. Furthermore, this invention not only provides traction for hepatobiliary surgical incisions but also provides traction to pull the skin towards the incision area during postoperative suturing. For example, in obese patients with thicker abdominal fat, the weight of the thicker fat, skin, and muscle tissue around the incision will exert a greater traction force on the incision, easily causing excessive tearing. Therefore, during surgical incision suturing... During the procedure, the skin tissue on both sides of the incision needs to be pulled towards the center of the incision. During the operation, the movable plate 2 moves closer to the incision area so that the suction cup 32 can pull the adsorbed skin area towards the center of the incision, thereby reducing the gap between the lacerations in the surgical incision area and assisting the surgeon in completing the suturing operation of the surgical incision. Compared with manual operation, the multiple suction cups 32, support pads 15 and pads 24 in this invention can achieve greater traction control on the patient's abdominal skin and prevent the skin around the surgical incision from being pulled by the downward movement of the skin tissue on both sides of the waist and abdomen, thus assisting the surgeon in successfully completing the suturing operation of the surgical incision.

[0033] The inner side of the main support 1 is fixedly provided with a support pad 15 corresponding to the two sides of the patient's waist and abdomen; the outer side of the support pad 15 is provided with an adhesive coating. When placing the main support 1, the support pad 15 can be attached to both sides of the patient's waist and abdomen, and the adhesive coating can be used to make the support pad 15 stick to the patient's skin. This creates a connection between the skin on both sides of the patient's waist and abdomen, so that the skin tissue on both sides of the patient's waist and abdomen can be supported by the support pad 15 when the patient is lying down and cannot sag. Therefore, after the surgical site is cut, the area on both sides of the incision site of the patient's abdomen will not be pulled by the skin tissue on both sides of the waist and abdomen when it naturally sags. This further reduces the traction force on the skin held by the suction cup 32, thereby preventing the skin below the suction cup 32 from deforming due to the pulling force caused by the skin tissue on both sides of the patient's waist and abdomen sags and causing the suction cup 32 to fail to attach. This also avoids the failure of the entire traction device to control the traction of the skin around the patient's abdominal incision.

[0034] A flexible pad 24 is fixedly provided at the bottom of the movable plate 2, and an adhesive coating is provided on the outer side of the pad 24. When the pad 24 is attached to the patient's skin surface, the adhesive coating allows the pad 24 to adhere to the patient's skin. Since the movable plate 2 is located outside the suction cup 32, the pad 24 can form a connection with the skin in the outer area adsorbed by the suction cup 32. This allows for greater control of the patient's abdominal skin surface in conjunction with the suction cup 32, and reduces the pulling force of the skin tissue around the suction cup 32 on the adsorbed skin area, further reducing the risk of the suction cup 32 failing to adhere to the skin surface.

[0035] The above are merely embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A traction device for hepatobiliary surgery, characterized in that, include: The main support (1) has a groove (11) that runs through the front and rear sides. There are two movable plates (2) located in the groove (11) area of ​​the main support (1). Both movable plates (2) can move towards each other and away from each other within the groove (11) along the side trajectory of the main support (1). Adsorbers (3) are provided in multiples and arranged sequentially on the movable plate (2); The negative pressure suction device (12) is set on both sides of the main support (1). The negative pressure suction device (12) can control the multiple adsorbers (3) on the movable plate (2) to work independently. The drainage pipe (13) is located between the negative pressure suction port of the negative pressure suction device (12) and the corresponding adsorber (3), and is used to form an airflow communication state between the negative pressure suction port of the negative pressure suction device (12) and the adsorber (3).

2. The hepatobiliary surgical traction device according to claim 1, characterized in that, The main support (1) is provided with straps at both ends, and the straps at both ends are connected to each other by Velcro.

3. The hepatobiliary surgical traction device according to claim 1, characterized in that, The middle section of the main support (1) is designed in an arc shape, so that the arc-shaped cross-sectional area of ​​the main support (1) can cover the surface of the human abdomen.

4. The hepatobiliary surgical traction device according to claim 1, characterized in that, The main support (1) is provided with sliding grooves (14) that run through both the inner and outer sides of the groove (11) on both sides. Guide rods (21) are fixedly installed at both ends of the movable plate (2). The guide rod (21) extends from the groove (11) on the main bracket (1) to the corresponding slide groove (14).

5. A traction device for hepatobiliary surgery according to claim 4, characterized in that, A guide rod (21) on the movable plate (2) passes through the corresponding slide groove (14) and extends a distance to the outside of the main support (1); An adjusting element (22) is provided on the extension end of the guide rod (21); The guide rods (21) are all provided with threads; The adjusting member (22) has a threaded groove extending to the outside. The threaded groove of the adjusting member (22) is fitted onto the threaded part of the guide rod (21) and forms a threaded connection.

6. The hepatobiliary surgical traction device according to claim 1, characterized in that, The adsorber (3) includes an adsorption plate (31); The adsorption plate (31) is disposed on the movable plate (2); The suction plate (31) is provided with a suction cup (32), and the bottom end of the suction cup (32) is provided with an suction port that can be attached to the skin surface. The top of the suction cup (32) is connected to the drainage pipe (13).

7. A traction device for hepatobiliary surgery according to claim 6, characterized in that, The adsorption plate (31) is provided with a limiting groove (311) that runs through the upper and lower sides. The movable plate (2) is provided with threaded holes (23) at the corresponding positions of each adsorption plate (31). The limiting groove (311) on the adsorption plate (31) is provided with a bolt (33) that matches the threaded hole (23).

8. A traction device for hepatobiliary surgery according to claim 7, characterized in that, The top of the bolt (33) is fixedly provided with a hand-tightening part (34) that can be operated by hand.

9. A traction device for hepatobiliary surgery according to claim 1, characterized in that, The inner side of the main support (1) is fixedly provided with a support pad (15) corresponding to the patient's waist and abdomen areas. The outer side of the support pad (15) is provided with an adhesive coating.

10. A traction device for hepatobiliary surgery according to claim 1, characterized in that, A flexible pad (24) is fixedly provided at the bottom of the movable plate (2), and an adhesive coating is provided on the outer side of the pad (24).

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