CN211155934U - Large-curvature tissue tunnel building and traction device - Google Patents

Abstract

The utility model discloses a big curvature tissue tunnel is established and draw gear, including colluding the board, the outer tube, the pull rod, the outer handle, inner handle and button, the head that colludes the board is arc bending structure and has juxtaposed the traction hole, and can straighten by external force, collude the board and forge by memory metal and make, the afterbody that colludes the board passes the outer tube and is located the pull rod fixed connection of outer tube, pull rod one end holds in the outer tube inside and just can be portable rather than, the pull rod deviates from the one end of outer tube and passes outer handle and the inner handle fixed connection who is located the outer handle, button and inner handle fixed connection, walk the way of handle in the outer handle through button control, the conduction through the pull rod drives the flexible of colluding the board. The utility model provides a tissue tunnel establishes and draw gear, separation, tunnel establishment, band wire that encircle of the important pipeline structure of realization laparoscopic surgery in-process that can convenient and fast pull and follow-up processing, the thick tissue tunnel is established and important pipeline structure's processing operation in the specially adapted hepatobiliary pancreas operation.

Description

Large-curvature tissue tunnel establishment and traction device

technical field

The utility model relates to the technical field of medical devices, in particular to a large-curvature tissue tunnel establishment and traction device.

Background technique

In recent years, with the improvement of people's living standards, the incidence of various hepatobiliary and pancreatic diseases, including liver tumors, hepatolithiasis, and pancreatic tumors, has been increasing in the Chinese population. , caused by portal hypertension, hypersplenism is more common. Therefore, more and more patients need to undergo surgical treatment, such as partial liver resection, splenectomy, pancreaticoduodenectomy, and so on. In recent years, the level of hepatobiliary and pancreatic surgery has been greatly improved in my country, and more and more patients have the opportunity to enjoy the benefits brought by the minimally invasive techniques of hepatobiliary and pancreatic surgery. For example, laparoscopic liver resection has been carried out in more and more medical institutions in my country. In some large medical centers, the minimally invasive operation rate of liver surgery reaches 60% to 70%. Laparoscopic splenectomy, laparoscopic pancreatoduodenectomy, etc. are also widely carried out. The quality of these minimally invasive surgical techniques in hepatobiliary and pancreatic surgery is gradually becoming mature, with small surgical trauma, fast recovery, and fine anatomy, which are benefiting more and more patients. Recently, more and more complex and challenging laparoscopic hepatobiliary, pancreatic, and spleen surgeries have been carried out. How to invent more and better surgical instruments to assist surgeons in the protection/separation of important structures under The further development of minimally invasive hepatobiliary and pancreatic surgery is a major issue for surgeons.

The liver is the largest solid organ of the human body. It has a dual blood supply system of the hepatic artery and the portal vein. The blood flow is extremely rich. The blood flow into the liver from the portal vein alone can reach 1500ml/l/min. The intrahepatic duct structure is complex, the bile duct, the hepatic artery and the portal venous system jointly run with the Glisson sheath, which is the so-called Glisson system. The posterior segment of the inferior vena cava is surrounded by liver tissue and receives hepatic blood flow from the hepatic vein and short hepatic vein. Due to the difficulty of laparoscopic exposure and transposition of the liver, the laparoscopic surgical operation is often limited by the operating angle, and the control of blood flow and the management of important pipelines during the operation are the difficulties of laparoscopic hepatectomy. To prevent or control bleeding, a hepatoduodenal ligament block, or a subhepatic (and/or suprahepatic) inferior vena cava block, or even a hepatic vein block is sometimes required to reduce surgical risk; anatomical liver In segment/lobe resection, the Glisson pedicle of the hemihepatic or hepatic segment should be blocked; sometimes a retrohepatic inferior vena cava sling should be placed to assist in exposure and hepatectomy. During the above procedures, the surgeon is often faced with the lack of suitable tools, which makes it difficult to establish the posterior tunnel (liver or inferior vena cava or hepatic pedicle) and tissue traction.

The key to the success or failure of laparoscopic splenectomy lies in the separation of the splenic artery and the treatment of the splenic pedicle. Due to the perspective of laparoscopic operation, the separation and ligation of the splenic artery sometimes face difficulties, which restricts the safety of the operation and even determines the success or failure of the operation; build a tunnel behind the spleen pedicle, use a wire (or rubber band) for traction, and use a cutting and closing device once Sexual amputation of the spleen pedicle is one of the most convenient and safe methods for laparoscopic splenectomy. In laparoscopic pancreaticoduodenectomy, the establishment of the anterior tunnel of the superior mesenteric vein and the suspension of the pancreas are also crucial. In the past, the lack of convenient and reliable tools has often made surgery difficult and time-consuming.

In conclusion, in common hepatobiliary and pancreatic surgical procedures such as laparoscopic liver resection, laparoscopic splenectomy, and laparoscopic pancreaticoduodenectomy, the separation of the aforementioned important duct structures, the establishment of tunnels behind the tissues, the use of wires/rubber bands, and the traction Whether it can be easily realized and suspended is an important factor restricting the surgical process and surgical safety. A device that is moderate in strength, easy to operate, retractable, capable of changing curvature, and capable of carrying a wire is desired by the aforementioned surgery.

Utility model content

The main purpose of the utility model is to provide a large-curvature tissue tunnel establishment and traction device, which is aimed at the surrounding separation, tunnel establishment, wire traction, and subsequent treatment of important pipeline structures during laparoscopic surgery. There are φ3cm and φ5cm models to choose from.

In order to achieve the above purpose, the utility model provides a large-curvature tissue tunnel establishment and traction device, including a hook plate, an outer tube, a pull rod, an outer handle, an inner handle and a button, wherein,

The head of the hook plate has an arc-shaped bending structure and can be straightened by external force, and is juxtaposed with a traction hole matching a specific type of urinary catheter. The hook plate is forged from memory metal, and the tail of the hook plate passes through the outer tube and is located in The pull rod in the outer tube is fixedly connected, one end of the pull rod is accommodated inside the outer tube and can move relative to it, the end of the pull rod away from the outer tube passes through the outer handle and is fixedly connected with the inner handle located in the outer handle, and the button is fixedly connected with the inner handle, through The button controls the running of the inner handle in the outer handle, and drives the extension and contraction of the hook plate through the conduction of the pull rod.

Preferably, the hook plate includes a curved portion located at the head and a straight portion located at the tail, the curved portion has an arc-shaped curved structure and a semi-circular structure, and the straight portion passes through the outer tube and is fixedly connected to the pull rod.

Preferably, the head of the hook plate has an oval hole-like structure, so as to facilitate the pulling out of the ureter/wire/rubber band.

Preferably, a plug for sealing is installed on the side of the outer tube close to the hook plate, and the hook plate passes through the plug and is fixedly connected to the pull rod.

Preferably, the outer handle is provided with a card slot for accommodating the inner handle and allowing it to move in shape, the outer side wall of the outer handle is provided with a long slot, and one end of the button passes through the slot and is located in the card slot. Handle fixed connection.

Preferably, a sealing ring is further provided between the inner handle and the outer handle.

Preferably, the inner handle casing has a plurality of sealing rings.

Preferably, a joint is installed on the end through hole of the outer handle, and the pull rod passes through the joint to connect with the inner handle.

Preferably, the end of the inner handle is provided with a first mounting hole for accommodating the end of the pull rod, the inner handle is also provided with a second mounting hole for inserting the button, the axis of the first mounting hole and the second mounting hole The axis is set vertically.

Preferably, the outer side wall of the outer handle is provided with anti-skid patterns.

The large-curvature tissue tunnel establishment and traction device proposed by the utility model has the advantages of simple structure, convenient operation and low cost. The operation can be completed by pushing a one-way button, and the extension and retraction of the hook plate is controlled by the handle. The curvature can be changed, and the hole at the head end is specially matched to the standard rubber catheter. The operation with the wire is quick and easy, and it is especially suitable for the surrounding separation of important pipeline structures during laparoscopic liver resection/splenectomy/pancreatoduodenectomy. For tunnel establishment, belt traction and subsequent disposal, 3cm or 5cm models can be selected according to different tunnel lengths. The device can make up for the above-mentioned disadvantages of common endoscopic instruments in the process of separating important pipeline structures or establishing tissue tunnels, such as difficulty in operation, insufficient curvature of instruments, and difficulty in traction with wires.

Description of drawings

Fig. 1 is the structural representation of the utility model large curvature tissue tunnel establishment and traction device;

Fig. 2 is the front view structure schematic diagram of the hook plate in the large-curvature tissue tunnel establishment and traction device of the present invention;

Fig. 3 is the structural representation of the hook plate A direction shown in Fig. 2;

4 is a cross-sectional structural schematic diagram of the middle and outer handles of the large-curvature tissue tunnel establishment and traction device of the present invention;

5 is a schematic diagram of the external structure of the middle and outer handles of the large-curvature tissue tunnel establishment and traction device of the present invention;

6 is a schematic diagram of the external structure of the inner handle in the large-curvature tissue tunnel establishment and traction device of the present invention.

In the figure, 1-hook plate, 11-traction hole, 2-plug, 3-outer pipe, 4-tie rod, 5-joint, 6-outer handle, 7-inner handle, 8-button, 9-sealing ring.

The realization, functional characteristics and advantages of the purpose of the present utility model will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention.

It should be noted that in the description of the present invention, the terms "horizontal", "longitudinal", "upper", "lower", "front", "rear", "left", "right" and "vertical" , "horizontal", "top", "bottom", "inside", "outside" and other indications of orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the present utility model and simplifying the description , does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be construed as a limitation on the present invention. Furthermore, the terms "first," "second," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

Referring to Figures 1 to 6, in this preferred embodiment, a large-curvature tissue tunnel establishment and traction device with moderate strength, easy operation, retractable head, and large-curvature tissue tunnel with wire, including hook plate 1 (with φ3cm and φ5cm two curvature models, the curvature indicates the corresponding diameter of the arc), the outer tube 3, the pull rod 4, the outer handle 6, the inner handle 7 and the button 8, among which,

The head of the hook plate 1 has an arc-shaped curved structure and can be straightened by external force to achieve blood vessel separation, and a traction hole 11 matching the urinary catheter (such as an 8F urinary catheter) is placed. The hook plate 1 is made of high-strength memory metal forging. , the tail of the hook plate 1 is fixedly connected with the pull rod 4 located in the outer pipe 3 through the outer pipe 3, one end of the pull rod 4 is accommodated in the outer pipe 3 and can move relative to it, and the end of the pull rod 4 away from the outer pipe 3 passes through the outer pipe 3. The handle 6 is fixedly connected with the inner handle 7 located in the outer handle 6, the button 8 is fixedly connected with the inner handle 7, the inner handle 7 is controlled to run in the outer handle 6 through the button 8, and the extension and retraction of the hook plate 1 is driven by the conduction of the pull rod 4 .

Specifically, referring to FIGS. 2 and 3 , the hook plate 1 includes a curved portion located at the head and a straight portion located at the tail, the curved portion has an arc-shaped curved structure and a semi-circular structure, and the straight portion passes through the interior of the outer tube 3 and It is fixedly connected to the pull rod 4. The head of the hook plate 1 has an oval hole-shaped structure, which is convenient for pulling out the urethral tube/silk thread/rubber band. The curved part of the hook plate 1 can be straightened under the action of external force, and it can quickly return to its original state after the external force is released, and the performance does not change after being treated at a temperature of 150 °C. reuse.

Further, referring to FIG. 1 , a plug 2 for sealing is installed in the hole on one side of the outer tube 3 close to the hook plate 1 , and the hook plate 1 is fixedly connected to the pull rod 4 through the plug 2 . The sealing of the outer tube 3 and the hook plate 1 can be ensured by setting the plug 2 . The plug 2 can be fixed to the outer tube 3 by means of pins.

Specifically, referring to FIGS. 4 and 5 , the outer handle 6 is provided with a slot for accommodating the inner handle 7 and for its shape to go, and the outer side wall of the outer handle 6 is provided with a long slot, and one end of the button 8 passes through The slot is fixedly connected with the inner handle 7 located in the card slot. A sealing ring 9 is also provided between the inner handle 7 and the outer handle 6 . The inner handle 7 is covered with a plurality of sealing rings 9 .

Further, a joint 5 is installed on the end through hole of the outer handle 6 , and the pull rod 4 passes through the joint 5 to be connected with the inner handle 7 .

6 , the end of the inner handle 7 is provided with a first mounting hole for accommodating the end of the pull rod 4, and the inner handle 7 is also provided with a second mounting hole for inserting the button 8. The axis of the first mounting hole is aligned with the first mounting hole. The axes of the two mounting holes are vertically arranged. The outer side wall of the outer handle 6 is provided with anti-skid patterns.

The large-curvature tissue tunnel establishment and traction device is suitable for the separation, traction and surgical field exposure of liver blood vessels under laparoscopy. The hepatic vascular separation device enters the abdominal cavity through the 5mm Trocar working end and reaches the pre-separation site (such as intrahepatic Glisson sheath system, middle hepatic vein, first hepatic port, second hepatic port, hepatoduodenal ligament, etc.).

After the plug 2 and the hairpin-shaped hook plate 1 at the head of the outer tube 3 reach the target pipeline—the blood vessel (or the hepatoduodenal ligament) that is semi-hidden or fully hidden in the liver parenchyma, the hook plate 1 of the round shield is attached. Gently probe the back of the pipeline, push the button 8 forward slightly, and the hairpin-shaped hook plate 1 moves from the back to the front (or from deep and shallow), and uses the curved surface of the hook plate 1 to bypass and pass through the back of the vascular trunk. Gently shake the handle to clear the adhesion structure next to the blood vessel, and then complete other operations, such as blood vessel ligation or disconnection. It is also possible to thread the thread through the hollow slit in the head of the hook plate 1 as required, push the button 8 on the outer handle 6 back, and then retract the hook plate 1 into the outer tube 3 and pull out the pull rod 4, and the thread is pulled from the back of the blood vessel. out to complete the operation. The blunt hook plate 1 of the device is not easy to injure the blood vessels by mistake, and the special arc and hollow structure are beneficial to complete the separation of blood vessels and the strip line.

The large-curvature tissue tunnel establishment and traction device proposed in this embodiment has the advantages of simple structure, convenient operation and low cost. The operation can be completed by pushing a one-way button, and the extension and retraction of the hook plate is controlled by the handle. The curvature can be changed, and the hole at the end is specially matched to the standard rubber catheter. The operation with the wire is quick and easy, and it is especially suitable for the surrounding separation and tunneling of important pipeline structures during laparoscopic liver resection/splenectomy/pancreatoduodenectomy. For establishment, traction with wire and subsequent disposal, 3cm or 5cm models can be selected according to different tunnel lengths. The device can make up for the above-mentioned disadvantages of common endoscopic instruments in the process of separating important pipeline structures or establishing tissue tunnels, such as difficulty in operation, insufficient curvature of instruments, and difficulty in traction with wires.

The above are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model patent. Any equivalent structural transformation made by using the contents of the present utility model description and accompanying drawings, or directly or indirectly applied in other related technical fields, All the same are included in the scope of patent protection of the present invention.

Claims (10)

1. A large-curvature tissue tunnel is established and a traction device, characterized in that it comprises a hook plate, an outer tube, a pull rod, an outer handle, an inner handle and a button, wherein the head of the hook plate is in an arc-shaped curved structure and is subject to The external force can be straightened, and a traction hole for matching the urinary tube is juxtaposed. The hook plate is made of memory metal forging. Relatively movable, the end of the pull rod away from the outer tube passes through the outer handle and is fixedly connected with the inner handle located in the outer handle, the button is fixedly connected with the inner handle, and the inner handle is controlled by the button to run in the outer handle. Drive the extension of the hook plate. 2 . The large-curvature tissue tunnel establishment and traction device according to claim 1 , wherein the hook plate comprises a curved portion located at the head and a straight portion located at the tail, and the curved portion has an arc-shaped curved structure and a semi-circular shape. 3 . Circular structure, the straight part passes through the outer tube and is fixedly connected with the pull rod. 3 . The large-curvature tissue tunnel establishment and traction device according to claim 2 , wherein the head of the hook plate has an oval hole-shaped structure, which is convenient for pulling out of the ureteral catheter/silk thread/rubber band. 4 . 4 . The large-curvature tissue tunnel establishment and traction device according to claim 1 , wherein a plug for sealing is installed on the side of the outer tube close to the hook plate, and the hook plate is fixedly connected to the pull rod through the plug. 5 . 5. The large-curvature tissue tunnel establishment and traction device according to claim 1, wherein the outer handle is provided with a slot for accommodating the inner handle and for its shape to go, and the outer side wall of the outer handle is provided with a long strip a slot, one end of the button passes through the slot and is fixedly connected with the inner handle located in the card slot. 6 . The large-curvature tissue tunnel establishment and traction device according to claim 1 , wherein a sealing ring is further provided between the inner handle and the outer handle. 7 . 7 . The large-curvature tissue tunnel establishment and traction device according to claim 6 , wherein the inner handle is covered with a plurality of sealing rings. 8 . 8 . The large-curvature tissue tunnel establishment and traction device according to claim 1 , wherein a joint is installed on the end through hole of the outer handle, and a pull rod passes through the joint to connect with the inner handle. 9 . 9. The large-curvature tissue tunnel establishment and traction device according to claim 1, wherein the end of the inner handle is provided with a first mounting hole for accommodating the end of the pull rod, and the inner handle is also provided with a first mounting hole for accommodating the end of the pull rod. In the second installation hole into which the button is inserted, the axis of the first installation hole is perpendicular to the axis of the second installation hole. 10. The large-curvature tissue tunnel establishment and traction device according to any one of claims 1 to 9, characterized in that, the outer side wall of the outer handle is provided with anti-slip patterns.

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