CN1718166A - Bundled Minimally Invasive Surgery Excision Tissue Extractor - Google Patents

Abstract

A bind-type microwound take-off device dedicated for the tissue resected by endoscope is composed of a flexible bag, a restrictive thread and an opening and recovering unit for opening the folded flexible bag and recovering the resected tissue. It features that the folded flexible bag and the opening and recovering unit are bond by the restrictive thread to become a slender rod.

Description

Bundled Minimally Invasive Surgery Excision Tissue Extractor

technical field

The invention relates to a minimally invasive surgical instrument, in particular to an instrument for removing and resecting tissue in minimally invasive surgery such as laparoscopy and thoracoscopic surgery.

Background technique

Laparoscopic surgery is a minimally invasive surgery performed through small incisions. This type of surgery has small incisions, less postoperative pain, and faster recovery, so it has been more and more widely used. However, in the implementation of such operations, how to safely remove the large biological tissue removed through small incisions is a difficult problem encountered in the further development of endoscopic minimally invasive surgery; especially in the removal of gallbladder, cysts, inflamed appendix, etc. When waiting for fluid-filled tissue or malignant tumor tissue, the remaining fragments of tissue or overflowing fluid in the body can easily lead to infection, complications, or the spread of cancer cells, endangering other healthy tissues and even the lives of patients.

In order to solve the technical problem that restricts the development of laparoscopic surgery to safely take out large pieces of resected biological tissue through small incisions, various surgical instruments for taking out resected biological tissues have been developed at home and abroad. There are two types of surgical instruments for taking out and resecting tissue in the prior art, one is a biological specimen breaker, and the other is a specimen recovery bag. The prior art biological specimen breaker cuts the large biological specimen into small pieces by rotating and cutting the resected biological specimen in the abdominal cavity, and then takes it out through a small incision, which is more practical for benign masses that do not contain liquid tissue. In order to avoid the residue of fine tissue or fluid-filled tissue in the body during rotary cutting, which may cause infection or cause the growth and spread of cancer cells, the biological specimen crusher is usually used in conjunction with the specimen recovery bag in clinical practice, that is, the biological specimen is first included in the specimen recovery bag, and then crushed with a biological specimen crusher and taken out of the body.

There are two types of specimen recovery bags in the prior art, one is a specimen recovery bag with an expansion spring, and the other is a specimen recovery bag without an expansion spring. Specimen recovery bags with expansion springs, such as US Patent No. 5,465,731, No. 5,480,404, No. 5,647,372, and No. 5,971,995, this type of recovery bag is a flexible bag structure with one end open and the other end closed. The specimen recovery bag is installed at the front end of the release system composed of the inner sheath and the outer sheath. After the release system enters the human body, the outer sheath is retracted to expose the specimen recovery bag. The open end of the recovery bag is opened in the body through a surgical dilator, and the Put the resected biological tissue into the bag, then remove the expansion spring of the spreader, separate the recovery bag from the spreader, tighten the sealing noose at the open end of the recovery bag, close the open end of the recovery bag, and then take the biological tissue out of the body or pull it to the incision The nearby surgical instruments are broken and taken out of the body. The structure is complex, the operation is cumbersome, and the cost of use is high. Due to economic reasons, many patients cannot bear it. At the same time, the recycling bag made of film is easy to get stuck between the inner sheath and the outer sheath, and the frictional resistance increases. Not only Difficult to release and sometimes leads to bag breakage. Sample recovery bags without opening springs, such as Chinese patents ZL0215153.3, ZL01245792.2, and ZL01232360.8, cannot be opened automatically, and need to be opened with surgical forceps in the body, which is time-consuming and laborious. Compared with the food preservation bags chosen by doctors themselves , has no obvious advantages, and is difficult to promote clinically. For the shortcomings of the above-mentioned products, the inventor once designed and produced a series of sample recovery bags with opening devices (Chinese patents ZL03146816.0, ZL03274546. ZL200410052301.5, ZL200420095393.0), and have good clinical application, but the release system of these specimen recovery bags still adopts the traditional inner and outer sheath structure, in large-scale clinical applications, there is still the recycling of film manufacturing The bag is easy to get stuck between the inner sheath and the outer sheath, and the frictional resistance increases, which is not only difficult to release but also sometimes leads to damage to the recycling bag.

These specimen recovery bags in the prior art are all released by a delivery system that compresses the specimen recovery bag between the inner sheath and the outer sheath. Since the recovery bag is not easy to put into the outer sheath tube after being folded, the production efficiency is low, and at the same time , during clinical use, the flexible material film of the recovery bag is easy to get stuck between the inner sheath and the outer sheath, which increases the resistance, is not easy to release, and sometimes causes the recovery bag to be damaged, especially for the recovery bag with a large volume. One shortcoming is more obvious.

In order to overcome the above-mentioned shortcomings of the prior art and provide a specimen recovery bag that is easier to release during clinical use, has higher production efficiency, is safer, and is less expensive, it is necessary to improve the prior art.

Contents of the invention

Bundled minimally invasive surgical excision tissue extractor, including: flexible bag, restraining wire, expansion and recovery device, the flexible bag is a bag-like structure made of flexible polymer materials with a closed end and an open end, which can drive the flexible bag The open end of the open end is opened or closed and the expansion and recovery device is installed on the open end of the flexible bag, and the folded flexible bag and the compressed expansion and recovery device are bound into a slender rod shape by a detachable restraint line.

——The above-mentioned opening and recovery device is made of materials that can store the deformed shape and return to the original or close to the original shape when released, such as nickel-titanium shape memory alloy wire, medical stainless steel spring wire, elastic polymer material Silk.

——The above-mentioned opening and recovering device includes nickel-titanium shape memory alloy wires and connectors that have undergone heat treatment and are nearly circular, nearly elliptical or nearly diamond-shaped above the recovery temperature, and the connectors fix the ends of the memory alloy wires on the together.

——The above-mentioned opening and recovering device also includes a flexible sleeve, and the flexible sleeve is sheathed on the nickel-titanium shape memory alloy wire.

——The above-mentioned opening and recovering device adopts a diamond-shaped structure of movable hinges.

——The rhombus structure of the movable hinge includes chains and pins, and the chains are connected to each other by pins to form a hexagonal rhombus.

- The open end of the above-mentioned flexible bag also includes a through hole through which the expansion and recovery device can pass.

——The above-mentioned bundled tissue extractor for minimally invasive surgery also includes a recovery line, which is made of flexible polymer material wire, and one end of the recovery line is fixed at the tail of the expansion and recovery device.

——One end of the above-mentioned recovery line is used to detachably bind the folded flexible bag and the compressed expansion and recovery device into a slender rod shape, the binding line is a part of the recovery line, and the other end is connected to the expansion and recovery device At the tail of the recovery device, part of the recovery line is outside the body.

——The above-mentioned bundled tissue extractor for minimally invasive surgery also includes a conveyor, and the folded flexible bag and the compressed opening and recovery device are bound to the front end of the conveyor through a detachable restraining wire.

——The above-mentioned conveyor includes a supporting arm and an operating rod, the supporting arm is connected in front of the operating rod; the folded flexible bag and the compressed opening and recovery device and the supporting arm are bound into a slender rod shape by a detachable restraining wire Fixed on the front end of the joystick.

——The above-mentioned conveyor is an operating rod formed by a thin-walled tube or a cylindrical rod. The tail of the expansion and recovery device is non-detachably fixed on the front end of the operating rod formed by a thin-walled tube or cylindrical rod. The folded flexible bag and the compressed The expansion and recovery device of the utility model is bound into a slender rod shape by a detachable restraining wire, and is located at the front end of the operating rod formed by a thin-walled tube or a cylindrical rod.

- The above-mentioned conveyor also includes a flexible sealing ring, which is fixed in the central hole of the operating rod.

——The above-mentioned bundled special resected tissue extractor for minimally invasive surgery also includes a pull ring, and the pull ring is installed on the extracorporeal end of the restraining wire or the extracorporeal end of the recovery wire.

- The above-mentioned conveyor also includes a handle, which is mounted on the tail of the operating rod.

The purpose of the present invention is to provide a bundled special excision tissue extractor for minimally invasive surgery, which can easily enter the body through a small incision in laparoscopic minimally invasive surgery, pull the restraint wire outward, and quickly remove the restraint wire. The open end is automatically opened under the action of the opening and recovery device, which is convenient for storage. Since this product adopts a detachable binding structure, the folded flexible bag and the compressed expansion and recovery device are bound together in a detachable way with a restraint line to form a slender rod. Once the bound restraint line is removed , the flexible bag mouth can be opened quickly and automatically, avoiding that the plastic film of the flexible bag is easily stuck between the inner sheath and the outer sheath when the flexible recycling bag is folded and compressed between the inner sheath and the outer sheath for release in the prior art, which is not easy The shortcomings of releasing or sometimes causing damage to the recycling bag, at the same time, the use of the tied wire structure greatly improves the production efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of a bundled special excision tissue extractor for minimally invasive surgery according to the present invention. The tissue extractor of the present invention is composed of a flexible bag, a restraint wire, and an opening and recovery device. It is in the shape of a long rod, which is convenient to enter the abdominal cavity or chest cavity of the human body through a trocar or a small incision.

FIG. 2 is a schematic diagram of the working principle of the tissue extractor described in FIG. 1 after entering the abdominal cavity through a laparoscopic trocar (Trocar). The tissue extractor of the present invention enters the abdominal cavity through a puncture device, and one end of the restraining wire of the product of the present invention remains outside the body.

Fig. 3 is a working principle diagram of the tissue extractor in Fig. 1 when it is partially deployed. Clamp the tail of the opening and recovery device of the product described in the present invention with surgical forceps, keep the position of the product described in the present invention fixed, and pull the restraint line outwards to easily remove the folded flexible bag and the compressed bag. The restraint line on the expansion and recovery device, under the action of the expansion and recovery device, the open end of the flexible bag that removes the restraint line part is opened.

Fig. 4 is a working principle diagram of the tissue extractor shown in Fig. 1 when the restraining wire is completely removed and the resected biological tissue is included. Clamp the tail of the opening and recovery device of the product described in the present invention with surgical forceps, keep the position of the product described in the present invention fixed, and pull the restraint wire outward until the restraint wire is completely removed and taken out of the body. At this time, the flexible bag and the stretcher The constraints of the opening and recovery device are completely released, and driven by the expansion and recovery device, the open end of the flexible bag is opened, and the excised biological tissue can be conveniently put into the flexible bag.

Fig. 5 is a working principle diagram of the tissue extractor in Fig. 1 when the open end of the flexible bag is pulled out of the body after the resected biological tissue is inserted. Use surgical forceps to clamp the tail of the expansion and recovery device through the trocar and pull it outwards to draw the expansion and recovery device. The expansion and recovery device drives the open end of the flexible bag to close, and the open end of the flexible bag is closed and retracted to enter the trocar , and then use surgical forceps to clamp the tail of the expansion and recovery device and pull it out of the body, while withdrawing the trocar until the open end of the flexible bag exits the body, remove the trocar, and expand the open end of the flexible bag outside the body.

Fig. 6 is a schematic diagram of the working principle of the tissue extractor in Fig. 1 when the biological tissue included in resection is taken out of the body. The trocar is inserted along the open end of the expanded flexible bag, the small incision is opened, and the trocar is inserted into the crusher to crush and take out the resected biological tissue. When the incorporated resected biological tissue is basically taken out, the trocar is pulled out, the open end of the flexible bag is grasped, and the flexible bag is directly pulled out of the body.

Fig. 7 is a schematic structural view of the nearly circular opening and recovery device of the bundled minimally invasive surgery special excision tissue extractor according to the present invention.

Fig. 8 is a schematic diagram of the structure of the nearly elliptical opening and recovery device of the bundled minimally invasive surgical excision tissue extractor according to the present invention. The tissue extractor of the present invention is equipped with a flexible sleeve on the nickel-titanium shape memory alloy wire of the expansion and recovery device, which can prevent the surgical forceps from cutting or cutting the nickel-titanium shape memory alloy wire; Increase friction to prevent slipping when clamping with surgical forceps and facilitate operation.

Fig. 9 is a schematic structural view of the near-rhombic opening and recovery device of the bundled minimally invasive surgery special excision tissue extractor according to the present invention.

Fig. 10 is a structural schematic diagram of the opening and recovering device of the hexagonal rhombic movable hinge structure of the bundled minimally invasive surgery special excision tissue extractor according to the present invention.

Fig. 11 is an enlarged view of the area of Fig. 10A. The structure of the edge of the open end of the flexible bag and the structure of the through hole on the open end of the flexible bag are shown.

Fig. 12 is a cross-sectional view of Fig. 11B-B. The through-hole structure on the open end of the flexible pouch is demonstrated.

Fig. 13 is a schematic structural view of the expanding and recovering device described in Fig. 10 .

Fig. 14 is a structural schematic diagram of the bundled special excision tissue extractor for minimally invasive surgery according to the present invention. The product of the present invention adds a recovery line, that is, the tissue extractor of the present invention is composed of a flexible bag, a restraint line, an opening and recovery device and a recovery line. One end of the recovery line is fixed at the tail of the expansion and recovery device, and the other end is left outside the body. When recovering, the open end of the flexible bag can be recovered into the puncture device only by pulling the recovery line outward, which saves the operation of the doctor to clamp the tail of the expansion and recovery device with surgical forceps and pull it outward, and is more convenient to use.

Fig. 15 is a structural schematic diagram of the bundled special excision tissue extractor for minimally invasive surgery according to the present invention. The tissue extractor of the present invention is a special case of the product in Figure 14. In this example: one end of the recovery line is used to detachably bind the stacked flexible bag and the compressed expansion and recovery device, and its function is to restrain the line, that is The restraint line is a part of the recovery line; the other end of the recovery line is fixed at the tail of the expansion and recovery device, and a part of the recovery line is placed outside the body, so that it is convenient to remove the binding restraint and pull the flexible bag out of the body.

Fig. 16 is a schematic view of the structure of the bundled special excision tissue extractor for minimally invasive surgery according to the present invention. The tissue extractor of the present invention also includes a pull ring, and the pull ring is installed on the extracorporeal end of the restraining line or the extracorporeal end of the recovery line for easy operation.

Fig. 17 is a structural schematic diagram of the bundled special excision tissue extractor for minimally invasive surgery according to the present invention. The tissue extractor of the present invention also includes a conveyor, the folded flexible bag, the compressed opening and recovery device, and the support arm of the conveyor are bound to the front end of the conveyor through a detachable restraint wire, and the restraint wire passes through A through hole in the tube wall of the transporter leads to the outside of the body.

Fig. 18 is a structural schematic diagram of the bundled special excision tissue extractor for minimally invasive surgery according to the present invention. A flexible sealing ring is installed in the center hole of the operating rod of the conveyor, which can prevent the decrease of abdominal pressure caused by the excessive leakage of _CO2 gas when releasing the product of this project, and maintain the insufflation pressure required for laparoscopic surgery.

Fig. 19 is an improvement of the product in Fig. 18, and a handle is installed at the tail of the operating lever of the conveyor to facilitate operation.

Fig. 20 is an improvement of the product in Fig. 19, adding a recovery line, which is fixed at the tail of the expansion and recovery device, passes through the sealing ring, and leads to the outside of the body along the central hole of the conveyor operating rod.

Fig. 21 is an improvement of Fig. 20, adding a pull ring, and installing a pull ring on the extracorporeal end of the restraining wire, which is convenient for operation.

Fig. 22 is a structural schematic diagram of the bundled special excision tissue extractor for minimally invasive surgery according to the present invention. The tail of the opening and recovery device of the product described in the present invention is non-detachably fixed on the front end of the operating rod, and the folding and compression of the folded flexible bag and the expansion and recovery device are tied to the operation of the conveyor through a detachable restraint line. the front end of the rod.

Fig. 23 is an improvement of the product in Fig. 22. There is a through hole on the side wall of the front end of the operating rod of the conveyor, and the restraining line enters the central hole of the operating rod through the through hole and leads to the outside of the body, which is convenient for surgical operation.

Fig. 24 is an improvement of the product in Fig. 23. A handle is installed at the tail of the operating rod of the conveyor to facilitate operation.

Fig. 25 is an improvement of the product in Fig. 24. A pull ring is installed on the extracorporeal end of the restraint wire to facilitate operation.

In the above figure, 1 is the flexible bag, 2 is the restraining line, 3 is the opening and recovery device, 4 is the recovery line, 5 is the conveyor, 6 is the pull ring, 7 is the handle, 8 is the removal of biological tissue, and 9 is the puncture 10 is the small incision on the abdominal wall, 11 is the forceps, 12 is the abdominal wall, 13 is the breaker, 1-1 is the closed end of the flexible bag, 1-2 is the open end of the flexible bag, 1-3 is the open end of the flexible bag 3-1 is the elastic wire, 3-2 is the connector, 3-3 is the casing, 3-6 is the chain, 3-7 is the pin, 5-1 is the conveyor operating rod, 5-2 is the Conveyor support rod, 5-3 is a sealing ring, 5-4 is a through hole on the operating rod wall, and 5-5 is a through hole on the operating rod.

Detailed ways

Example 1:

Adopt flexible material, such as plastic film or fiber-reinforced plastic film to make flexible bag 1, through cutting and thermoforming, make into the pocket shape of one end closing and one end open, at the open end 1-2 of flexible bag 1, thermoplasticity after folding Crimping can form through holes 1-3. That is, the flexible bag 1 according to the present invention is obtained (refer to FIGS. 7 , 8 , 9 , 10 , 11 , 12 ). Nickel-titanium shape memory alloy wires with a recovery temperature of 20°C-25°C are heat-treated to make them nearly circular (refer to Figure 7) or nearly elliptical (refer to Figure 8) or hexagonal rhombus (see Figure 8) above the recovery temperature. Referring to FIG. 9 ), the elastic filament 3-1 of the expansion and recovery device of the present invention is obtained. The elastic thread 3-1 is passed through the through hole 1-3 along the open end of the flexible bag, and the silk head of the elastic thread 3-1 is fixed together with the connector 3-2, and the installation sheet of the present invention is obtained. Open and recover the flexible bag 1 of device 3. When flexible nylon or polyester fiber or other flexible polymer materials are selected as the restraint line 2, the flexible bag 1 is folded together with the compressed opening and the spring device 3 is detachably tied together with the restraint line 2, and the obtained The present invention relates to a bundled special excision tissue extractor for minimally invasive surgery.

During clinical use, the bundled minimally invasive surgery special excision tissue extractor of the present invention is inserted into the abdominal cavity through a trocar (Trocar), and the inventive bundled minimally invasive surgery special excision tissue extractor can also be clamped with surgical forceps 11 through the trocar. Open and recover the tail of the device 3, and send the extractor of the present invention into the abdominal cavity through the puncture device, so that a part of the restraining wire 2 remains outside the body (refer to FIG. 2 ). When the resected biological tissue needs to be included, the tail of the expansion and recovery device 3 of the present invention is first clamped with surgical forceps 11, and then the restraint wire 2 retained outside the trocar is pulled outward, and the restraint wire 2 is removed. , under the action of the opening and recovery device 3, the open end of the flexible bag 1 is driven to expand (referring to FIG. 3 ). After the restraining wire 2 is completely removed, the open end 1-2 of the flexible bag is also fully expanded, and the resected biological tissue 8 is completely incorporated into the flexible bag 1 with surgical forceps 11 (refer to FIG. 4 ). Clamp the tail of the opening and recovery device 3 with surgical forceps 11 and pull it outwards, and pull the open end 1-2 of the flexible bag into the trocar 9 (refer to FIG. 5 ). Keep pulling the tail of the opening and recovery device 3 outward while withdrawing the puncture device 9, pull the open end 1-2 of the flexible bag out of the abdominal cavity, expand the open end 1-2 of the flexible bag, and simultaneously insert the puncture The device 9 is inserted into the open end 1-2 of the flexible bag again, and the small incision 10 on the abdominal wall is stretched open, and at the same time, the breaker 13 is inserted into the puncture device 9, and the biological tissue 8 in the flexible bag 1 is broken and taken out. After the biological tissue 8 in 1 is basically taken out, the breaker 13 is taken out, the trocar 9 is pulled out, and at the same time, the open end 1-2 of the flexible bag outside the abdominal wall is grasped, the flexible bag 1 is pulled out from the body, and the remaining tissue of the flexible bag 1 is taken out In vitro (cf. Figure 6).

In this embodiment, the elastic wire 3-1 of the expansion and recovery device 3 can also use stainless steel spring wire, polymer material elastic wire or other shapes that can store the deformed shape, and can return to the original or original shape when loosened. The material manufacture close to original shape, its shape also can be other various shapes that are convenient to open flexible bag open end 1-2.

In order to facilitate pulling the tissue extractor of the present invention out of the body, a recovery line 4 can be bound at the tail of the expansion and recovery device 3, one end of the recovery line 4 is fixed on the tail of the expansion and recovery device 3, The other end stays outside the body through the puncture device 9, so that when the recovery line 4 is pulled outside the body, the expansion and recovery device 3 can be pulled into the puncture device 9, without the need to clamp the tail of the expansion and recovery device 3 to the outside of the body with surgical forceps. Pulling it out facilitates the doctor's operation (refer to Figure 11). As a special case of this situation, the same flexible polymer material line can be used, one end of which is bound to the tail of the unfolding and recovery device 3, as the recovery line 4; the other end is used as the restraint line 2, and the folded flexible bag 1 and the compressed opening and recovery device 3 are bundled together, and a part of the flexible line remains outside the body, so that the restraining line 2 can be removed when pulled outside the body, and the open end 1-2 of the flexible bag is unfolded. After the flexible bag 1 is unfolded, it can be Incorporate the resected biological tissue 8, and at the same time, pull the flexible wire after receiving the object, pull the opening and recovery device 3 of the present invention out of the body, drive the open end 1-2 of the flexible bag to gather, and pull it out of the body ( Refer to Figure 15).

In order to further facilitate the clinician's operation, the pull ring 6 can be fixed on the extracorporeal end of the restraint line 2 or the recovery line 4, so that the restraint line 2 can be removed only by pulling the pull ring 6, or the tissue extractor of the present invention can be recovered outside the body (Refer to Figure 16).

In this embodiment, a flexible sleeve 3-3 can also be installed on the memory alloy wire 3-1 of the expansion and recovery device 3, and the flexible sleeve 3-3 is sleeved on the nickel-titanium shape memory alloy wire 3-1 for heating. Plastic fixation, on the one hand, can prevent the surgical forceps from cutting or cutting the nickel-titanium shape memory alloy wire; on the other hand, it can increase friction, prevent slipping when clamping with surgical forceps, and facilitate operation.

Example 2:

Adopt flexible material, such as plastic film or fiber-reinforced plastic film to make flexible bag 1, through cutting and thermoforming, make into the pocket shape of one end closing and one end open, at the open end 1-2 of flexible bag 1, thermoplasticity after folding Crimping can form through holes 1-3. That is, the flexible bag 1 of the present invention is obtained. Holes are drilled at both ends of the metal strip or plastic strip as a chain 3-6, the chain is passed through the through hole 1-3 on the open end of the flexible bag, and the chain 3-6 is connected end to end with a pin 3-7, Manufactured into a hexagonal rhombus, when the hexagonal rhombus is compressed towards the center, the open end 1-2 of the flexible bag can be expanded, but when the hexagonal rhombus is stretched to both sides, the open end 1-2 of the flexible bag can be closed. When flexible nylon or polyester fiber or other flexible polymer materials are selected as the restraint line 2, the flexible bag 1 is folded together with the compressed opening and the spring device 3 is detachably tied together with the restraint line 2, and the obtained The bundled type minimally invasive surgical excision tissue extractor of the present invention (refer to Figs. 1, 10, 11, 12, 13).

Example 3:

According to the method of embodiment 1 or embodiment 2, the expansion and recovery device 3 and the flexible bag 1 of the present invention are assembled together. Cut off 3/5-4/5 of the arc from the front end of the thin-walled special-shaped tube with side holes, and only keep the 2/5-1/5 arc, and cut off the arc part to form the support of the conveyor 5 of the present invention The arm 5-2, the uncut special-shaped tube is used as the operating rod 5-1 of the conveyor 5. When selecting flexible nylon or polyester fiber or other flexible polymer materials as the restraining line 2, the folded flexible bag 1, the compressed opening and the spring device 3 together with the support arm 5-2 of the conveyor are used as the restraining line 2 are detachably bundled together to obtain the bundled minimally invasive surgery special excision tissue extractor of the present invention (refer to FIG. 17 ). The constraint wire 2 can pass through the through hole 5 - 5 on the wall of the special-shaped pipe of the conveyor 5 . When the restraining wire 2 is pulled in the direction of the conveyor operating rod 5-1, the restraining wire 2 binding the folded flexible bag 1, the compressed opening and the spring device 3 can be removed, and when the restraining wire is completely removed, the present invention The tissue extractor automatically falls off the conveyor.

Example 4:

According to the method of Embodiment 1 or Embodiment 2, the expanding and recovering device 3 and the flexible bag 1 of the present invention are assembled together. The front end of the thin-walled tube is cut off from the arc of 3/5-4/5, and only the arc of 2/5-1/5 is reserved, and the arc part is cut off to form the support arm 5-2 of the conveyor 5 of the present invention, The uncut thin-walled tube serves as the operating rod 5-1 of the conveyor 5. When selecting flexible nylon or polyester fiber or other flexible polymer materials as the restraining line 2, the folded flexible bag 1, the compressed opening and the spring device 3 together with the support arm 5-2 of the conveyor are used as the restraining line 2 are detachably bundled together to obtain the bundled type minimally invasive surgery special excision tissue extractor of the present invention. In order to prevent the decline of abdominal pressure, a sealing ring 5-3 can be installed in the central hole of the thin wall, and the restraint line 2 passes through the central hole of the thin-walled tube of the conveyor 5 and the sealing ring 5-3, when the operating rod of the conveyor When the restraining wire 2 is pulled in the direction of 5-1, the bound and folded flexible bag 1, the restraining wire 2 of the stretched and spring device 3 after compression can be removed, and when the restraining wire is completely removed, the tissue extractor of the present invention will automatically Come off the conveyor (see Figure 18).

In this embodiment, a handle 7 can also be installed at the tail of the operating rod of the conveyor to facilitate clinical operation (refer to FIG. 19 ).

In this embodiment, the recovery line 4 made of flexible polymer material can also be fixed at the tail of the expansion and retraction device 3, and the recovery line 4 and the restraint line 2 are along the central hole and the sealing ring of the thin-walled tube of the conveyor 5. 5-3 through, when the restraint line 2 is pulled in the direction of the conveyor operating rod 5-1, the restraint line 2 binding the folded flexible bag 1, the compressed stretch and the spring device 3 can be removed, when the restraint line 2. After being completely dismantled, the tissue extractor of the present invention will automatically fall off from the conveyor (refer to FIG. 20 ).

In this embodiment, a pull ring 6 can also be installed on the extracorporeal end of the restraining wire 2 (refer to FIG. 21 ).

Example 5:

When the elastic wire 3-1 of the expansion and recovery device 3 of the present invention is relatively thick, the elastic wire 3-1 of the expansion and recovery device 3 is worn on the open end 1 of the flexible bag according to the method of embodiment 1 or 2 -2. The elastic thread head of the elastic thread 3-1 of the stretching and recovery device 3 is bonded to the front end of the thin-walled tubular conveyor with a chemical adhesive. Choose flexible nylon yarn or polyester fiber yarn or other flexible polymer materials as the restraint line 2, and detachably bind the folded flexible bag 1 and the compressed opening and spring device 3 together with the restraint line 2 to obtain The bundled type minimally invasive surgery special excision tissue extractor of the present invention (referring to Fig. 22). In this embodiment, a through hole 5-4 can also be opened on the side wall of the thin-walled tube at the front end of the thin-walled tubular conveyor, and the constraint line 2 can enter the central hole of the thin-walled tube through the through hole 5-4, and lead to In vitro (cf. Figure 23).

In this embodiment, a handle 7 can also be installed at the tail of the conveyor, which is convenient for doctors to operate (refer to FIG. 24 ).

In this embodiment, a pull ring 6 can also be installed outside the body of the restraining wire 2, which is convenient for doctors to operate (refer to FIG. 25 ).

It should be noted that the structures disclosed and described herein can be replaced by other structures with the same effect, and the embodiments described in the present invention are not the only structures for realizing the present invention. Although preferred embodiments of the present invention have been described and described herein, it is clear to those skilled in the art that these embodiments are for illustration only, and that numerous changes, modifications and improvements can be made by those skilled in the art. Instead, without departing from the present invention, therefore, the protection scope of the present invention should be defined according to the spirit and scope of the appended claims of the present invention.

Claims (15)

1, binding-up type means for taking-out resected tissue specially used for minimal access surgery, it is characterized in that: described binding-up type means for taking-out resected tissue specially used for minimal access surgery comprises flexible pouch (1), constrained line (2), open and retracting device (3), flexible pouch (1) is the bag shaped structure that a blind end (1-1) and an open end (1-2) are arranged of flexible high molecular material manufacturing, open or closed open and retracting device (3) is installed on the open end (1-2) of flexible pouch the open end (1-2) that can drive flexible pouch, after the flexible pouch (1) after folding and the compression open and retracting device (3) is bundled into elongated rod-shaped by detachable constrained line (2).

2, according to the described binding-up type means for taking-out resected tissue specially used for minimal access surgery of claim 1, it is characterized in that: described open and retracting device (3) adopts the shape store after being out of shape, when unclamping, can get back to primary or near the material manufacture of original-shape, as niti-shaped memorial alloy silk, medical stainless steel spring wire, elasticity macromolecular material silk.

3, according to the described binding-up type means for taking-out resected tissue specially used for minimal access surgery of claim 2, it is characterized in that: described open and retracting device (3) comprises through typing is heat treated be subcircular or near oval or nearly rhombohedral niti-shaped memorial alloy silk (3-1) and union joint (3-2) more than recovery temperature, union joint (3-2) is fixed together the termination of memory alloy wire (3-1).

4, according to the described binding-up type means for taking-out resected tissue specially used for minimal access surgery of claim 3, it is characterized in that: described open and retracting device (3) also comprises flexible sleeve (3-3), flexible sleeve (3-3) is enclosed within on the niti-shaped memorial alloy silk (3-1).

5, according to the described binding-up type means for taking-out resected tissue specially used for minimal access surgery of claim 1, it is characterized in that: described opening and the diamond structure of retracting device (3) employing activity hinge.

6, according to the described binding-up type means for taking-out resected tissue specially used for minimal access surgery of claim 5, it is characterized in that: the diamond structure of described movable hinge comprises chain (3-6) and pin (3-7), and chain (3-6) is interconnected to six side's rhombuses by pin (3-7).

7, according to the described binding-up type means for taking-out resected tissue specially used for minimal access surgery of claim 1, it is characterized in that: also comprise on the open end of described flexible pouch (1-2) allowing and open and through hole (1-3) that retracting device (3) passes.

8, according to the described binding-up type means for taking-out resected tissue specially used for minimal access surgery of claim 1, it is characterized in that: described binding-up type means for taking-out resected tissue specially used for minimal access surgery also comprises exhausting line (4), exhausting line (4) adopts the manufacturing of flexible high molecular material silk, and exhausting line (4) one ends are fixed on and open and the afterbody of retracting device (3).

9, described according to Claim 8 binding-up type means for taking-out resected tissue specially used for minimal access surgery, it is characterized in that: the flexible pouch (1) after an end of described exhausting line (4) is used for removably will folding and the compression after open and retracting device (3) is bundled into elongated rod-shaped, described constrained line (2) is the part of exhausting line (4), the other end connects and to open and the afterbody of retracting device (3), exhausting line (4) some external.

10, according to the described binding-up type means for taking-out resected tissue specially used for minimal access surgery of claim 1, it is characterized in that: described binding-up type means for taking-out resected tissue specially used for minimal access surgery also comprises carrier (5), after the flexible pouch (1) after folding and the compression open and retracting device (3) is bundled in the front end of carrier (5) by detachable constrained line (2).

11, according to the described binding-up type means for taking-out resected tissue specially used for minimal access surgery of claim 10, it is characterized in that: described carrier (5) comprises support arm (5-1) and action bars (5-2), and support arm (5-1) is connected the front of action bars (5-2); Flexible pouch (1) after folding and compress after open and retracting device (3) and support arm (5-1) are bundled into the front end that elongated rod-shaped is fixed on action bars (5-2) by detachable constrained line (2).

12, according to the described binding-up type means for taking-out resected tissue specially used for minimal access surgery of claim 10, it is characterized in that: described carrier (5) is the action bars (5-2) of light-wall pipe or cylindrical rod formation, open and the afterbody of retracting device (3) is fixed on the front end of the action bars (5-2) that light-wall pipe or cylindrical rod form non-dismountablely, after flexible pouch (1) after folding and the compression open and retracting device (3) is bundled into elongated rod-shaped by dismountable constrained line (2), be positioned at the front end of the action bars (5-2) of light-wall pipe or cylindrical rod formation.

13, according to claim 11 or 12 described binding-up type means for taking-out resected tissue specially used for minimal access surgery, it is characterized in that: described carrier (5) also comprises flexible seal ring (5-3), and flexible seal ring (5-3) is fixed in the centre bore of action bars (5-2).

14, according to claim 1 or 8 described binding-up type means for taking-out resected tissue specially used for minimal access surgery, it is characterized in that: described binding-up type means for taking-out resected tissue specially used for minimal access surgery also comprises draw ring (6), draw ring (6) is installed in the external end of constrained line (2), or the external end of exhausting line (4).

15, according to claim 10 or 11 or 12 described binding-up type means for taking-out resected tissue specially used for minimal access surgery, it is characterized in that: described carrier (5) also comprises handle (7), and handle (7) is installed in the afterbody of action bars (5-2).

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