Duckbill intraoperative suction device

Abstract

This utility model discloses a duckbill-shaped intraoperative suction device, comprising a suction head, a suction tube, and a negative pressure suction device connected in sequence. The suction head is a flat tubular structure with a thickness smaller than its length and width. One end of the suction head along its length is directly or indirectly connected to and communicates with the suction tube, while the other end of the suction head along its length is a closed end or has an end through hole. Multiple through suction holes are also distributed on the suction head. This duckbill-shaped intraoperative suction device replaces the traditional cylindrical suction head with a duckbill-shaped, flat tubular structure. The suction head has a thin and flat shape, making it better suited for patients undergoing reoperation, especially children. It can be inserted behind the sternum in a very small space and increases the area of ​​protection behind the sternum, helping to avoid damage to the heart and major blood vessels behind the sternum during a second thoracotomy.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, specifically relating to a duckbill-shaped intraoperative suction device. Background Technology

[0002] With the widespread development of surgical treatment for congenital heart disease (CHD), CHD surgery is becoming increasingly complex, affecting younger patients, and becoming more diversified. Many complex CHD staged treatments and / or postoperative complications require repeated or even multiple surgeries, and the number of repeat open-heart surgeries is increasing year by year.

[0003] During a re-open thoracotomy, the sternum can be split using a small oscillating saw or a miniature wire saw, proceeding from bottom to top. The retrosternal tissue should be dissected under direct vision using sharp or blunt force techniques, gradually expanding the surgical field from the center outwards and from bottom to top. Long-term clinical practice has shown that a suction head for blood recovery can be placed behind the sternum. This protects the heart and, due to the significant bleeding and adhesions that may occur during complex re-operations, thorough blood recovery is essential.

[0004] Currently used suction devices during re-thoracotomy cannot effectively protect the retrosternal tissue. Relevant existing patents, such as Chinese utility model patents with authorization publication numbers CN201768253U and CN215584982U, demonstrate this. Traditional suction devices have simpler suction head structures, such as cylindrical tubes. Because the suction heads of existing devices are cylindrical or spherical, with a minimum outer diameter of 4mm, the relatively large suction head is not conducive to insertion behind the sternum to protect the heart and major blood vessels, especially for patients undergoing re-operation and particularly children. Furthermore, the limited cross-sectional width of this cylindrical suction head (only 4mm in diameter) and its rounded outer surface cannot effectively block cutting tools such as oscillating saws, thus offering limited protection to the retrosternal tissue. Therefore, a new type of intraoperative suction device is needed to increase its flexibility and applicability, while strengthening the protection of the retrosternal tissue, thereby reducing the risk of massive bleeding during cardiac dissection during re-thoracotomy and lowering perioperative morbidity and mortality. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a duckbill-shaped intraoperative suction device, which solves the problems of existing suction devices being difficult to apply to patients undergoing reoperation and difficult to protect the tissues behind the sternum. It makes it easier to use in situations where the distance between the sternum and the tissues is small, and strengthens the protection of the tissues behind the sternum, which helps to reduce the risk of massive intraoperative bleeding, the incidence of perioperative complications, and the mortality rate.

[0006] The technical means adopted in this utility model are as follows.

[0007] This utility model provides a duckbill-shaped intraoperative suction device, which includes a suction head, a suction tube and a negative pressure suction device connected in sequence. The suction head is a flat tube structure with a thickness smaller than its length and width. One end of the suction head in the length direction is directly or indirectly connected to and communicates with the suction tube. The other end of the suction head in the length direction is a closed end or has an end through hole. The suction head is also provided with a plurality of through suction holes.

[0008] In some implementations, the suction head has a flattened elliptical cross-section.

[0009] In some embodiments, the cross-section of the suction head is a flat ellipse with a width of 7 mm to 9 mm and a height of 2 mm to 4 mm.

[0010] In some embodiments, the suction head has a suction area on the side away from the suction tube, and the suction holes are evenly distributed throughout the suction area.

[0011] In some embodiments, the suction holes are through holes with a diameter of 1 mm to 2 mm, and the interval between adjacent suction holes is 1 mm to 3 mm.

[0012] In some implementations, the size of the suction area along the length of the suction head is 2 cm to 3 cm.

[0013] In some embodiments, the suction head has a thickness of 2 mm to 4 mm, a length of 4 cm to 6 cm, and a width of 7 mm to 9 mm.

[0014] In some implementations, the suction head is connected to the suction tube via a deflector tube, and an angle is formed between the length direction of the suction head and the length direction of the suction tube.

[0015] In some implementations, the steering tube is a flexible stainless steel tube.

[0016] In some embodiments, a suction bottle is also included, which is connected in series between the suction head and the negative pressure suction device via a suction tube.

[0017] The beneficial technical effects of this utility model are as follows:

[0018] 1. The duckbill-shaped intraoperative suction device of this utility model changes the traditional cylindrical suction head to a duckbill shape (i.e., a flat tubular structure). The suction head is thin and flat, which is better suited for young children. It can be inserted behind the sternum in a very small space and increases the area of ​​protection behind the sternum, which helps to avoid damage to the heart, major blood vessels and other tissues behind the sternum.

[0019] 2. Compared with traditional suction heads, the duckbill-shaped intraoperative suction device of this utility model does not significantly reduce the cross-sectional area of ​​the suction head, and preferably increases the number of side holes (i.e. suction holes) for blood suction. This improves the efficiency and effect of suction, and can more timely remove bleeding from the surgical field and maintain the clarity of the surgical field. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the suction head and surrounding parts of this utility model.

[0021] Figure 2 This is a schematic diagram of the overall structure of the suction device of this utility model.

[0022] Figure 3 This is a schematic diagram of the suction head of this utility model in use.

[0023] Figure 4 This is a schematic diagram showing the dimensions of the suction head and connecting tube of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 11. Suction head; 111. Suction hole; 12. Diverting tube; 2. Suction tube; 21. Connecting tube; 3. Suction bottle; 4. Negative pressure suction device; 5. Saw tool; 6. Sternum; 7. Substernal tissue. Detailed Implementation

[0026] This invention provides a duckbill-shaped intraoperative suction device, primarily designed for use in cardiac surgery, addressing the limitations of existing suction devices for pediatric patients undergoing repeat surgery and for protecting retrosternal tissue. The key to this invention lies in designing the suction device's front end in a flattened duckbill shape, forming a cross-section such as a flattened oval. This design minimizes the height while increasing the width, further increasing the number of suction holes. This facilitates insertion of the suction device behind the sternum during secondary thoracotomy, protecting the retrosternal tissue. This duckbill-shaped intraoperative suction device is more suitable for applications where the distance between the sternum and tissues is small, making it particularly suitable for pediatric patients. It also enhances the protection of retrosternal tissue, helping to reduce the risk of massive intraoperative bleeding, perioperative complications, and mortality.

[0027] Please see Figure 1 , Figure 2This utility model discloses a duckbill-shaped intraoperative aspirator, comprising a suction head 11, a suction tube 2, and a negative pressure aspirator 4 connected in sequence. The structures of the suction tube 2 and the negative pressure aspirator 4, as well as the connections between the components, can follow existing technologies. The main improvement of this utility model is that the suction head 11 has a flat tubular structure with a thickness smaller than its length and width, thus forming a structure resembling a duckbill, hence the name "duckbill-shaped." One end of the suction head 11 is directly or indirectly connected to and communicates with the suction tube 2, so that the negative pressure generated by the negative pressure aspirator 4 is transmitted to the suction head 11 through the suction tube 2. The other end of the suction head 11 is a closed end or has an end through hole, and multiple through suction holes 111 are distributed on the suction head 11. In embodiments where one end of the suction head 11 is a closed end, suction is achieved through the suction holes 111; in embodiments where one end of the suction head 11 has an end through hole, suction is achieved simultaneously through the end through hole and the suction holes 111. Preferably, the flat tubular structure of the suction head 11 is specifically that the cross-section of the suction head 11 is a flat ellipse; more preferably, the width of the flat ellipse of the cross-section of the suction head 11 is 7mm to 9mm and the height is 2mm to 4mm. The product can be further divided into small, medium and large sizes to adapt to different situations.

[0028] Please see Figure 1 , Figure 4 The suction head 11 has a suction area formed on the side away from the suction tube 2. The suction area is approximately 2 to 3 cm long. Suction holes 111 are evenly distributed throughout the suction area. The suction holes 111 are through holes with a diameter of approximately 1 mm to 2 mm, and the spacing between adjacent suction holes 111 is approximately 1 mm to 3 mm. In other words, the suction holes 111 are densely distributed within a certain area at the end of the suction head 11 to enhance the suction effect. The end of the suction head 11 is a closed end with a smooth outer surface. The cross-section of the suction head 11 is a flat ellipse or other shape similar to a flat ellipse, with a thickness of approximately 2 mm to 4 mm and a width (i.e., height) of approximately 7 mm to 9 mm; the overall length of the suction head 11 is approximately 4 cm to 6 cm.

[0029] In actual surgery, different specifications and models of suction devices can be selected to meet the needs of the surgery, depending on the patient's physical condition. In the following embodiment, the selected suction head 11 has a flat elliptical cross-section with a width of 8mm and a height of 3mm.

[0030] In a preferred embodiment, the specific size design scheme is as follows: Figure 4As shown (where the elliptical dashed line on the left is a schematic diagram of the cross-sectional shape of the suction head 11), the suction area is approximately 2 cm in length of the suction head 11. The suction holes 111 are through holes with a diameter of approximately 2 mm, and the interval between adjacent suction holes 111 is approximately 1 mm. The thickness of the suction head 11 is approximately 3 mm, and the width (i.e., height) is approximately 8 mm; the overall length of the suction head 11 is approximately 5 cm.

[0031] Please see again Figure 1 Preferably, the suction head 11 is connected to the suction tube 2 via the deflector tube 12, and the length direction of the suction head 11 and the length direction of the suction tube 2 form an angle; specifically, for example, the length direction of the suction head 11 and the length direction of the suction tube 2 have an angle of 165°, that is... Figure 4 The 15° acute angle is indicated in the diagram.

[0032] More specifically, the suction tube 2 can be any existing flexible tube or plastic tube, with a connecting tube 21 at its end for connection to the suction head 11. Existing connecting tubes 21 are cylindrical steel pipes with a diameter of approximately 1 cm and a length of approximately 10 cm to 20 cm. The end of the connecting tube 21 has a connector for a sealed connection with the suction tube 2. The connecting tube 21 is relatively long for handheld use and insertion into the desired position on the patient's body during surgery. In existing technology, a straight or curved tube is attached to the end of the connecting tube 21 to form the existing suction head. In this solution, the suction head 11 is connected to the connecting tube 21 at the end of the suction tube 2 via a turning tube 12. The cross-sectional shapes of both ends of the turning tube 12 match those of the suction head 11 and the connecting tube 21, i.e., one end is a flat tube and the other end is a round tube. The specific connection method is, for example, a sleeve connection, and further fixation and sealing can be achieved at the joint using screws and / or by attaching a rubber sleeve on the outside.

[0033] In some embodiments, the steering tube 12 is a rigid and non-deformable bend to achieve the required corner angle, facilitating surgical operations and allowing insertion from the side to the desired position. Preferably, the steering tube 12 is a bendable stainless steel tube, designed with a relatively thin structure, allowing the operator to bend the tube due to the material's plasticity and maintain the angle after bending without deforming due to minor external forces. This structure and usage are simple and effective. Furthermore, this bendable stainless steel tube is originally a bend with the required corner; during use, the bending angle can be adjusted according to the actual situation, making it more flexible and convenient to use.

[0034] Please see Figure 2Preferably, it also includes a suction bottle 3, which is connected in series between the suction head 11 and the negative pressure aspirator 4 via the suction tube 2. More specifically, the suction bottle 3 is sealed except for its connection to the suction tube 2 during use. The suction bottle 3 provides more space for the aspirated blood, and furthermore, the suction bottle 3 is made of transparent material to facilitate observation of the blood inside.

[0035] Currently, congenital heart disease surgery is becoming increasingly complex, affecting younger patients, and is becoming more diversified. Postoperative survival rates and quality of life for patients are also improving. 85% of infants with congenital heart disease who undergo surgery survive into adulthood, and this group has been growing rapidly in recent years. Consequently, the number of secondary heart surgeries (reopening the chest) is also increasing year by year. For patients undergoing reopening the chest, because the major blood vessels, heart, and other retrosternal tissues are tightly adhered to the sternum after the initial surgery, with severe adhesions and the normal layers obliterated, it is necessary to use small oscillating saws or micro-wire saws to cut open the sternum. This process can easily damage the heart and major blood vessels behind the sternum. Reopening the chest is a significant risk factor associated with perioperative complications and mortality. Massive bleeding during cardiac dissection significantly increases mortality; statistics show that the mortality rate can increase dramatically from 6.5% to 25.0%. Therefore, intraoperative protective measures are particularly important.

[0036] To address this, the duckbill-shaped intraoperative suction device of this invention can achieve the following: Figure 3 The usage state shown is a cross-sectional schematic diagram. That is, when the sawing tool 5 is used to cut the sternum 6 from top to bottom, the suction head 11 is inserted into the sternum 6 and can block the sawing tool 5, thereby isolating and protecting the tissue 7 behind the sternum and avoiding damage.

[0037] The duckbill-shaped intraoperative suction device of this invention maximizes the width of the suction head 11, expanding the protected area behind the sternum. This avoids the problem with existing tubular structures where the sawing tool easily deviates from the tubular surface upon contact, resulting in inadequate protection and damage to the retrosternal tissue. Simultaneously, it minimizes the thickness (height) of the suction head 11, facilitating its insertion behind the sternum (between the sternum 6 and the retrosternal tissue 7) during oscillating sawing of the sternum, making it particularly suitable for pediatric patients. Furthermore, the increased surface area of ​​the suction head 11 that may contact the retrosternal tissue 7 helps reduce the compressive force (pressure) on the tissue.

[0038] In addition, a large amount of bleeding occurs during the sawing of the sternum, so it is necessary to ensure the flow rate of suction. Compared with the existing structure, the suction head 11 of this utility model adopts this flat tube structure, which can reduce the thickness while still ensuring the cross-sectional area of ​​the suction head 11, and can also increase the side area, thereby increasing the number of suction holes 111 on the side, so as to facilitate timely and sufficient suction of bleeding during the sawing of the sternum and maintain the clarity of the surgical field.

Claims

1. A duckbill-shaped intraoperative suction device, comprising a suction head (11), a suction tube (2), and a negative pressure suction device (4) connected in sequence, characterized in that, The suction head (11) has a flat tube structure with a thickness smaller than its length and width. One end of the suction head (11) in the length direction is directly or indirectly connected to the suction tube (2) and communicates with it. The other end of the suction head (11) in the length direction is a closed end or has an end through hole. The suction head (11) is also provided with a plurality of through suction holes (111).

2. A duckbill intraoperative suction device according to claim 1, wherein, The cross-section of the suction head (11) is a flat ellipse.

3. A duckbill intraoperative suction device according to claim 2, wherein, The cross-section of the suction head (11) is a flat ellipse with a width of 7mm to 9mm and a height of 2mm to 4mm.

4. The duckbill intraoperative suction apparatus of claim 1, wherein, The suction head (11) has a suction area on the side away from the suction tube (2), and the suction holes (111) are evenly distributed throughout the suction area.

5. A duckbill intraoperative suction apparatus as defined in claim 4, wherein, The suction hole (111) is a through hole with a diameter of 1 mm to 2 mm, and the interval between adjacent suction holes (111) is 1 mm to 3 mm.

6. A duckbill intraoperative suction apparatus as defined in claim 4, wherein, The size of the attraction area in the length direction of the attraction head (11) is 2cm to 3cm.

7. A duckbill intraoperative suction device according to any one of claims 1-2, 4-6, wherein, The suction head (11) has a thickness of 2mm to 4mm, a length of 4cm to 6cm, and a width of 7mm to 9mm.

8. A duckbill intraoperative suction device according to any one of claims 1-6, wherein, The suction head (11) is connected to the suction tube (2) through the turning tube (12), and the length direction of the suction head (11) and the length direction of the suction tube (2) form an angle.

9. A duckbill intraoperative suction apparatus according to claim 8, wherein, The steering tube (12) is a flexible and deformable stainless steel tube.

10. A duckbill-shaped intraoperative suction device according to any one of claims 1-6, characterized in that, It also includes a suction bottle (3), which is connected in series between the suction head (11) and the negative pressure suction device (4) via the suction tube (2).

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