Spleen taking device capable of automatically decomposing tissue in minimally invasive splenectomy

Abstract

The spleen taking device comprises an inner cylinder, an outer cylinder is rotationally connected to the outer portion of the inner cylinder, a supporting plate is mounted at the end of the outer cylinder, a mounting rod is mounted in the inner cylinder, a connecting table is slidably connected to the surface of the mounting rod, an excision head is arranged in the inner cylinder, and the excision head is connected with the supporting plate in a sliding mode. The end of the connecting table is rotationally connected with a connecting rod, and the end of the connecting rod is rotationally connected with a connecting block. Through the arranged excision head, the connecting rod, the first pull rod, the limiting plate and the offset adjusting mechanism, the excision head can adjust the angle of the excision head, and when a small necrotic area on the surface of the spleen is excided, the excision head inclines by different angles according to the size of the necrotic area; at the moment, the contact area of the excision head and the spleen can be changed according to the inclination angle, by adjusting the inclination angle of the excision head, a doctor can more accurately control the excision range, it is ensured that only necrotic spleen tissue is excided, and the healthy spleen part is reserved as far as possible.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a spleen removal device capable of automatically decomposing tissues in minimally invasive splenectomy. Background Art

[0002] Minimally invasive splenectomy refers to laparoscopic splenectomy, which is a minimally invasive surgery performed using laparoscopic technology to treat spleen diseases. It uses a laparoscope and related surgical instruments to make tiny incisions in the abdomen, observe the situation in the abdominal cavity through the laparoscope lens, and use surgical instruments to remove the spleen.

[0003] During minimally invasive splenectomy, due to its large size, the removed spleen is difficult to remove through a minimally invasive incision, and existing spleen removal devices are not convenient for decomposing the removed spleen in the abdominal cavity, which not only makes spleen removal difficult, but also greatly prolongs the operation time. If the removed spleen accidentally falls into the abdominal cavity, spleen implantation may occur. In addition, the contact area between the resection head and the spleen of the existing spleen removal device is large. When resecting a smaller necrotic area of ​​the spleen, the resection head is not convenient for adjusting its own angle, and the healthy spleen tissue around the necrotic area may be accidentally resected during the resection, which not only increases the risk of the operation, but the loss of healthy tissue may also lead to a prolonged recovery time for the patient. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a clinical surgical wound retraction device to solve the above-mentioned background technology that the existing spleen removal device is not convenient for decomposing the removed spleen in the abdominal cavity, and the removal head is not convenient for adjusting its own angle. The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology.

[0005] To solve the above problems, the present invention provides the following technical solutions:

[0006] A spleen removal device that can automatically decompose tissues during minimally invasive splenectomy, comprising an inner cylinder, the outer cylinder is rotatably connected to the inner cylinder, a support plate is installed at the end of the outer cylinder, a mounting rod is installed inside the inner cylinder, a connecting platform is slidably connected to the surface of the mounting rod, a cutting head is arranged inside the inner cylinder, a connecting platform end is rotatably connected to a connecting rod, a connecting block is rotatably connected to the end of the connecting rod, a first pull rod is installed at the back end of the connecting block, a limiting plate is installed inside the inner cylinder, the first pull rod is slidably connected to the limiting plate, a crushing head is arranged inside the inner cylinder, a bump is installed at the end of the cutting head, and the connecting plate is slidably connected to the surface of the first pull rod; an offset adjustment mechanism, the offset adjustment mechanism The structure is arranged at the back end of the resection head and the side end of the mounting rod, and the offset adjustment mechanism is used to adjust the angle of the resection head, and the internal spacing of the resection head can be adjusted while adjusting the angle; a crushing follower component, the crushing follower component is arranged on the surface of the mounting rod and inside the resection head, and the crushing follower component is used to make the crushing head deviate with the resection head when the angle of the resection head is offset, so that the interior can also be crushed and decomposed when the resection head is deflected; a resection locking mechanism; the resection locking mechanism is arranged inside the other end of the inner tube, and the resection locking mechanism can lock the first pull rod, so that medical staff do not need to continuously pull the first pull rod, thereby reducing hand fatigue of medical staff.

[0007] Optionally, the number of the connecting platforms is two groups, and they are symmetrically distributed on the surface of the mounting rod; the cutting head is in the shape of a frustum, and a cavity is provided inside the cutting head.

[0008] Optionally, a spring is sleeved on the surface of the first pull rod; one end of the spring is connected to the limit plate, and the other end is connected to the back end of the connecting block.

[0009] Optionally, the surface of the crushing head is provided with arc stripes, four groups of the arc stripes are distributed in a circular shape on the surface of the crushing head, and the protrusion at the end of the crushing head is in the shape of a quadrangular pyramid.

[0010] Optionally, the offset adjustment mechanism includes a second pull rod slidably connected to the inside of the limit plate, and also includes a sliding table sliding in the sliding groove of the side wall of the back end of the cutting head, the end of the second pull rod is equipped with a sliding rod, both ends of the sliding rod are slidably connected to the sliding table, the other end of the second pull rod is connected to the connecting plate, the connecting plate is slidably connected to the surface of the first pull rod, the back end of the cutting head rotates inside the mounting table, the mounting table is slidably connected to the connecting table, a long plate is installed on the surface of the second pull rod, a first oil tank is installed on the surface of the long plate, a first piston rod is slidably connected to the inside of the first oil tank, the end of the first piston rod is connected to the limit plate, a second oil tank is installed inside the connecting table, a second piston rod is slidably connected to the inside of the second oil tank, the second piston rod is connected to the mounting table, and a hose is connected between the second oil tank and the first oil tank.

[0011] The present invention enables the resection head to adjust its own angle through an offset adjustment mechanism. When resecting a smaller necrotic area on the surface of the spleen, the resection head is tilted at different angles according to the size of the necrotic area. At this time, the contact area between the resection head and the spleen will change according to the tilt angle. By adjusting the tilt angle of the resection head, the doctor can control the resection range more accurately.

[0012] Optionally, springs are installed at both ends of the slide, and both ends of the spring are connected to the inner wall of the slide groove on the back side wall of the cutting head, and a torsion spring is installed between the inside of the cutting head and the mounting platform.

[0013] Optionally, the crushing follower assembly includes a first elastic telescopic rod installed at the bottom of the back end of the cutting head, and also includes a turntable mounted on the surface of the mounting rod, a ring is installed at the bottom of the first elastic telescopic rod, a second elastic telescopic rod is installed at the end of the turntable, a motor is installed at the end of the second elastic telescopic rod, an electric push rod is installed at the output end of the motor, the protruding end of the electric push rod is connected to the crushing head, and the ring is rotatably connected to the electric push rod.

[0014] Optionally, the number of the first elastic telescopic rods is two groups, and the two groups of the first elastic telescopic rods are symmetrically distributed on the surface of the ring.

[0015] Optionally, the cutting and locking mechanism includes a locking platform installed inside the inner cylinder, a boss is installed on the surface of the first pull rod, an elastic block is installed inside the boss, a pressure block slides in the internal cavity of the locking platform, and the end of the pressure block is connected to the third pull rod.

[0016] Optionally, one end of the locking platform is provided with a chamfer, the end of the pressing block is designed to be inclined, and the other end of the pressing block is provided with a tension spring.

[0017] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0018] In the above scheme, the resection head can adjust its own angle through the provision of the resection head, connecting rod, first pull rod, limit plate and offset adjustment mechanism. When resecting a smaller necrotic area on the surface of the spleen, the resection head is tilted at different angles according to the size of the necrotic area. At this time, the contact area between the resection head and the spleen will change according to the tilt angle. By adjusting the tilt angle of the resection head, the doctor can more accurately control the resection range to ensure that only the necrotic spleen tissue is resected, while retaining the healthy spleen part as much as possible, and when the resection head is tilted, the internal spacing of the resection head can be reduced synchronously to ensure that the resection head fits the necrotic area of ​​the spleen more closely, thereby more effectively resecting the diseased tissue.

[0019] Through the installation rod, crushing head, resection head and crushing follower assembly, when the resection head deviates to different angles, the crushing head can crush and decompose the internal tissue of the resection head. The crushing head can also change with the change of the angle of the resection head, ensuring that no matter what angle the resection head is at, the internal tissue of the spleen can be effectively processed, which greatly shortens the operation time and improves the operation efficiency.

[0020] By providing the inner cylinder, outer cylinder, support plate and resection locking mechanism, the resection head can be closed and locked when the necrotic tissue is removed into the inner cavity of the resection head. The staff does not need to continuously pull the first pull rod. The crushing head crushes and decomposes the tissue inside the inner cavity of the resection head, which can prevent the resection head from accidentally opening or moving during the crushing and decomposition process, thereby ensuring that the removed necrotic tissue will not fall into the patient's abdominal cavity. This not only avoids the occurrence of spleen implantation, but also greatly reduces the operational burden during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the explosion structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the first pull rod structure of the present invention;

[0026] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 6 This is a schematic diagram of the structure of the crushing follower assembly of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the offset adjustment mechanism of the present invention;

[0029] Figure 8 It is a schematic diagram of the structure of the cutting and locking mechanism of the present invention;

[0030] Fig. 9 It is a schematic diagram of the cross-sectional structure of the cutting and locking mechanism of the present invention.

[0031] [Reference Signs]

[0032] 1. Inner tube; 2. Outer tube; 3. Support plate; 4. Mounting rod; 5. Connecting platform; 6. Removal head; 61. Boss; 7. Connecting rod; 8. First pull rod; 9. Limiting plate; 10. Crushing head; 11. Offset adjustment mechanism; 111. Second pull rod; 112. Slide rod; 113. Slide platform; 114. Mounting platform; 115. First oil tank; 116. First piston rod; 117. Second oil tank; 118. Second piston rod; 12. Connecting plate; 13. Crushing follower assembly; 131. First elastic telescopic rod; 132. Ring; 133. Turntable; 134. Second elastic telescopic rod; 135. Electric push rod; 14. Removal locking mechanism; 141. Locking platform; 142. Boss; 143. Elastic block; 144. Pressing block; 145. Third pull rod.

[0033] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0034] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0035] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0036] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0037] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0038] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0039] like Figures 1 to 9As shown, an embodiment of the present invention provides a spleen removal device that can automatically decompose tissues during minimally invasive splenectomy, including an inner cylinder 1, which is composed of two hollow cylinders. The inner diameter and outer diameter of the left hollow cylinder are smaller than those of the right hollow cylinder, and a chamfer is provided at the connection between the two hollow cylinders. The outer surface of the left end of the inner cylinder 1 is rotatably connected with an outer cylinder 2, the outer cylinder 2 is hollow cylindrical, and the inner diameter of the outer cylinder 2 is equal to the outer diameter of the left end of the inner cylinder 1, a support plate 3 is installed at the left end of the outer cylinder 2, a mounting rod 4 is vertically installed on the inner wall of the right end of the inner cylinder 1, and connecting platforms 5 are slidably connected at both ends of the mounting rod 4, the connecting platform 5 is in the shape of a long block, a rectangular notch is provided at its right end, and a rounded corner is provided at the right end of the connecting platform 5, and the back end of the connecting platform 5 is rotatable with the connecting rod 7 The inner cylinder 1 is connected, a cutting head 6 is arranged at the right end part, and a convex block 61 at the back end of the cutting head 6 rotates inside the mounting platform 114. The inner wall surface strip of the mounting platform 114 is slidably connected with the sliding groove on the surface of the connecting platform 5. Two connecting rods 7 are rotatably connected in the rectangular notch at the right end of the connecting platform 5. The other ends of the two connecting rods 7 are rotatably connected with the connecting block. A first pull rod 8 is fixedly connected to the back end of the connecting block. A limiting plate 9 is fixedly connected to the inner wall at the right end of the inner cylinder 1. The first pull rod 8 slides in the circular hole in the middle part of the limiting plate 9. The first pull rod 8 is slidably connected to the limiting plate 9. A crushing head 10 is arranged at the central part of the right end of the inner cylinder 1. A turntable 133 on the central surface of the mounting rod 4 is fixedly connected to the end of the turntable 133 with a second elastic telescopic rod 134. The ends of the two elastic telescopic rods 134 are fixedly connected to a motor, an electric push rod 135 is installed at the output end of the motor, the protruding end of the electric push rod 135 is connected to the crushing head 10, a bump 61 is installed at the end of the cutting head 6, and the right end of the first pull rod 8 is slidably connected to the connecting plate 12 near the left end surface of the inner tube 1; the offset adjustment mechanism 11 is arranged at the back end of the cutting head 6 and the side end of the mounting rod 4, the offset adjustment mechanism 11 includes a second pull rod 111 slidably connected to the inside of the limit plate 9, a sliding rod 112 is installed at the end of the second pull rod 111, the sliding rod 112 is sleeved on the surface of the slide 113, and is slidably connected to the slide 113, the other end of the second pull rod 111 is connected to the connecting plate 12, and the connecting plate 12 is slidably connected to the surface of the first pull rod 8 The rear end protrusion of the cutting head 6 rotates inside the mounting platform 114, and the offset adjustment mechanism 11 is used to adjust the angle of the cutting head 6, and the internal spacing of the cutting head 6 can be adjusted while adjusting the angle; the crushing follower component 13 is arranged on the surface of the mounting rod 4 and inside the cutting head 6. When the angle of the cutting head 6 is offset, the crushing follower component 13 enables the crushing head 10 to deviate with the cutting head 6, so that the inside can also be crushed and decomposed when the cutting head 6 is deflected; the cutting locking mechanism 14 is arranged inside the other end of the inner tube 1, and the cutting locking mechanism 14 can lock the first pull rod 8, so that the medical staff does not need to continuously pull the first pull rod 8, thereby reducing the hand fatigue of the medical staff.

[0040] When performing a minimally invasive resection operation, firstly, the inner tube 1 and the outer tube 2 are introduced into the patient's abdominal cavity through the minimally invasive incision, and then the spleen of the patient's diseased area is removed. At this time, the first pull rod 8 is pulled to make the connecting platform 5 slide toward the center on the surface of the mounting rod 4, so that the resection head 6 is closed. At this time, the boss 142 on the surface of the first pull rod 8 will slide in the surface groove of the locking platform 141. When the elastic block 143 coincides with the locking hole, the resection head 6 will be closed. Then, the crushing head 10 is driven to rotate and extend through the motor and the electric push rod 135, so as to crush and decompose the internal tissue of the crushing head 10. After the crushing is completed, the resection head 6 is extended into the collection bag in the abdominal cavity. At this time, the third pull rod 145 is pulled, and the pressure block 144 will squeeze the elastic block 143. The spring on the surface of the first pull rod 8 will drive the connecting platform 5 to open and drive the resection head 6 to open, so that the crushed and decomposed tissue in the internal cavity of the resection head 6 falls into the collection bag.

[0041] like Figures 2 to 5 As shown, there are two groups of connecting platforms 5, and they are symmetrically distributed on the surfaces of both ends of the mounting rod 4; the resection head 6 is in the shape of a cone, and a cavity is opened inside the resection head 6. When the handle at the end of the first pull rod 8 is pulled, the two groups of connecting platforms 5 will move toward the middle of the mounting rod 4, so that the two groups of resection heads 6 are closed toward the middle of the mounting rod 4. The clamping force of the two groups of resection heads 6 when closed can remove the spleen. The opening of the cavity inside the resection head 6 can crush the spleen after removal inside the cavity. The cavity inside the resection head 6 provides a space for immediate crushing of the spleen after removal, without the need to transfer the removed tissue to other locations for processing. This greatly shortens the operation time and improves the overall operation efficiency.

[0042] like Figures 2 to 5 As shown, the first pull rod 8 is provided with a spring near the surface of the connecting block; one end of the spring is connected to the limit plate 9, and the other end is connected to the back end of the connecting block. When the first pull rod 8 is pulled, the first pull rod 8 will drive the two connecting rods 7 to slide toward the middle of the mounting rod through the connecting block. At this time, the two groups of cutting heads 6 are closed when they are closed toward the middle of the mounting rod 4. When the first pull rod 8 is released, the cutting head 6 will automatically open due to the rebound of the spring.

[0043] like Figure 6 As shown, the surface of the crushing head 10 is provided with arc stripes, and four groups of arc stripes are distributed in a circular shape on the surface of the crushing head 10. The protrusion at the end of the crushing head 10 is in the shape of a quadrangular pyramid, and the end of the quadrangular pyramid-shaped protrusion is relatively sharp, which can easily crush the tissue in the cavity of the resection head 6. The design of the four groups of arc stripes on the crushing head 10 can make the surface of the crushing head 10 form a spiral shape when the crushing head 10 rotates, thereby decomposing the spleen tissue into smaller states.

[0044] like Figure 5 , Figure 7As shown, the offset adjustment mechanism 11 includes a second pull rod 111 slidably connected to the right side area inside the limit plate 9, and also includes a slide 113 sliding in the slide groove of the side wall of the protrusion 61, one end of the slide 113 is limitedly installed in the slide groove of the side wall of the protrusion 61, and a slide rod 112 is installed at the end of the second pull rod 111. Both ends of the slide rod 112 are slidably connected to the slide 113. A circular hole with the same outer diameter as the slide rod 112 is opened in the slide 113. The other end of the second pull rod 111 is connected to the connecting plate 12. At this time The connecting plate 12 is located outside the left end of the inner tube 1, and the connecting plate 12 is sleeved on the surface of the first pull rod 8, and is slidably connected with the connecting plate 12 and the surface of the first pull rod 8. The protrusion at the back end of the cutting head 6 rotates inside the mounting platform 114. The connecting platform 5 is provided with a slide groove matching the long strip, and the long strip can slide in the connecting platform 5. The long strip on the inner wall surface of the mounting platform 114 is slidably connected with the slide groove on the surface of the connecting platform 5. A long plate is installed on the surface of the second pull rod 111, and a first oil tank 115 is installed on the surface of the long plate. The first oil tank 115 A first piston rod 116 is slidably connected inside, and the end of the first piston rod 116 is connected to the limit plate 9. A second oil tank 117 is installed inside the connecting platform 5. A second piston rod 118 is slidably connected inside the second oil tank 117, and the end of the second piston rod 118 is fixedly connected to the mounting platform 114. A hose is connected between the second oil tank 117 and the first oil tank 115. Pulling the connecting plate 12 will drive the second pull rod 111 to move backward, and the second pull rod 111 will drive the slide 113 to slide in the side slide groove of the back end of the resection head 6, and will cause the resection head 6 to rotate in the mounting platform 114, so as to adjust its own angle. During resection, the end of the resection head 6 can be made to contact with the necrotic area of ​​the spleen. When resecting a smaller necrotic area on the surface of the spleen, the resection head 6 can be tilted at different angles according to the size of the necrotic area. At this time, the contact area between the resection head 6 and the spleen will change according to the tilt angle. By adjusting the tilt angle of the resection head 6, the doctor can control the resection range more accurately.

[0045] like Figure 7 As shown, springs are installed at both ends of the slide 113, and both ends of the spring are connected to the inner wall of the slide groove on the back side wall of the cutting head 6. A torsion spring is installed between the inside of the cutting head 6 and the mounting platform 114. When the second pull rod 111 adjusts the angle of the cutting head 6, the opening of the slide groove on the back side wall of the cutting head 6 can prevent the second pull rod 111 from getting stuck when being pulled. When the second pull rod 111 is released, the establishment of the torsion spring and the spring can drive the second pull rod 111 to reset.

[0046] like Figure 6As shown, the crushing follower assembly 13 includes a first elastic telescopic rod 131 installed at the bottom of the back end of the resection head 6, and also includes a turntable 133 sleeved on the central surface of the mounting rod 4, a collar 132 is installed at the bottom of the first elastic telescopic rod 131, a second elastic telescopic rod 134 is installed at the end of the turntable 133, a motor is installed at the end of the second elastic telescopic rod 134, an electric push rod 135 is installed at the output end of the motor, the protruding end of the electric push rod 135 is connected to the crushing head 10, the collar 132 is rotatably connected to the electric push rod 135, when the smaller necrotic area on the surface of the spleen is removed, pulling the connecting plate 12 will drive the second pull rod 111 to move backward, the second pull rod 111 will drive the slide 113 to slide in the side slide groove of the back end of the resection head 6, and will cause the resection head 6 to slide on the mounting platform 114, thereby adjusting its own angle, so that the end of the resection head 6 can be brought into contact with the necrotic area of ​​the spleen during resection, and the second pull rod 111 will squeeze the second piston rod 118 when moving, so that the oil inside the second oil tank 117 enters the first oil tank 115 through the hose, and the oil inside the first oil tank 115 will push the first piston rod 116 to extend, thereby reducing the internal spacing of the resection head 6 and reducing the contact area between the resection head 6 and the necrotic area of ​​the spleen. When the resection head 6 deviates to different angles, the crushing head 10 can crush and decompose the internal tissue of the resection head 6, and the angle of the crushing head 10 can change with the change of the angle of the resection head 6, ensuring that no matter what angle the resection head 6 is at, the internal tissue of the spleen can be effectively processed.

[0047] like Figure 6 As shown, there are two groups of first elastic telescopic rods 131 , and the two groups of first elastic telescopic rods 131 are symmetrically distributed on the surface of the collar 132 . The establishment of the collar 132 can ensure that the angle of the crushing head 10 is consistent with that of the cutting head 6 .

[0048] like Figures 8 to 9The cutting locking mechanism 14 shown includes a locking platform 141 installed at the bottom of the inner wall of the left end of the inner tube 1, a boss 142 is installed on the left end surface of the first pull rod 8 near the end area of ​​the inner tube 1, an elastic block 143 is installed inside the boss 142, a pressing block 144 slides in the internal cavity of the locking platform 141, and a third pull rod 145 is connected to the end of the pressing block 144. At this time, the boss 142 on the surface of the first pull rod 8 will slide in the surface groove of the locking platform 141. When the elastic block 143 coincides with the locking hole, the cutting head 6 will be closed, and the boss 142 on the surface of the first pull rod 8 will slide in the surface groove of the locking platform 141. When the elastic block 143 coincides with the locking hole, the cutting head 6 will be closed. When it coincides with the locking hole, the resection head 6 will be closed, and then the crushing head 10 will be driven to rotate and extend through the motor and the electric push rod 135, so as to crush and decompose the internal tissue of the crushing head 10, so that the crushed and decomposed tissue in the internal cavity of the resection head 6 falls into the collection bag. After the necrotic tissue is removed, the resection locking mechanism 14 can automatically close and lock the resection head 6 without the need for the staff to continuously pull the first pull rod 8, which greatly reduces the operating burden during the operation, and the resection locking mechanism 14 can prevent the resection head 6 from accidentally opening or moving during the crushing and decomposition process, thereby ensuring that the removed necrotic tissue will not fall into the abdominal cavity.

[0049] like Figures 8 to 9 As shown, a chamfer is provided at one end of the locking platform 141, and the end of the pressing block 144 is designed to be inclined. A tension spring is installed at the other end of the pressing block 144. When the elastic block 143 contacts the locking platform 141, the chamfer is set to facilitate the elastic block 143 to shrink inside the boss 142, and the tension spring can automatically reset after the elastic block 143 loses the locking function. At this time, the third pull rod 145 is pulled, and the pressing block 144 will squeeze the elastic block 143, and the spring on the surface of the first pull rod 8 will drive the connecting platform 5 to open and drive the cutting head 6 to open.

[0050] The working process of the technical solution provided by the present invention is as follows:

[0051] When performing a minimally invasive resection operation, firstly, the inner tube 1 and the outer tube 2 are introduced into the patient's abdominal cavity through the minimally invasive incision, and then the spleen of the patient's diseased area is removed. At this time, the first pull rod 8 is pulled to make the connecting platform 5 slide toward the center on the surface of the mounting rod 4, so that the resection head 6 is closed. At this time, the boss 142 on the surface of the first pull rod 8 will slide in the surface groove of the locking platform 141. When the elastic block 143 coincides with the locking hole, the resection head 6 will be closed. Then, the crushing head 10 is driven to rotate and extend through the motor and the electric push rod 135, so as to crush and decompose the internal tissue of the crushing head 10. After the crushing is completed, the resection head 6 is extended into the collection bag in the abdominal cavity. At this time, the third pull rod 145 is pulled, and the pressure block 144 will squeeze the elastic block 143. The spring on the surface of the first pull rod 8 will drive the connecting platform 5 to open and drive the resection head 6 to open, so that the crushed and decomposed tissue in the internal cavity of the resection head 6 falls into the collection bag.

[0052] When removing a smaller necrotic area on the surface of the spleen, pulling the connecting plate 12 will drive the second pull rod 111 to move backward, and the second pull rod 111 will drive the slide 113 to slide in the side slide groove at the back end of the removal head 6, and will cause the removal head 6 to rotate in the mounting platform 114, thereby adjusting its own angle, so that the end of the removal head 6 can be made to contact the necrotic area of ​​the spleen during removal, and the second pull rod 111 will squeeze the second piston rod 118 when moving, so that the oil inside the second oil tank 117 enters the first oil tank 115 through the hose, and at this time, the oil inside the first oil tank 115 will push the first piston rod 116 to extend, thereby reducing the internal spacing of the removal head 6 and reducing the contact area between the removal head 6 and the necrotic area of ​​the spleen. When the head 6 rotates, the first elastic telescopic rod 131 will drive the ring 132 to adjust to the same angle as the resection head 6, so that the crushing head 10 can be offset together with the resection head 6, and then the first pull rod 8 is pulled to make the elastic block 143 coincide with the locking hole. At this time, the resection head 6 will be closed, and then the crushing head 10 will be driven to rotate and extend through the motor and the electric push rod 135, so as to crush and decompose the internal tissue of the crushing head 10. After the crushing is completed, the resection head 6 is extended into the collection bag in the abdominal cavity. At this time, the third pull rod 145 is pulled, and the pressure block 144 will squeeze the elastic block 143. The spring on the surface of the first pull rod 8 will drive the connecting platform 5 to open and drive the resection head 6 to open, so that the crushed and decomposed tissue in the internal cavity of the resection head 6 falls into the collection bag.

[0053] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0054] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A spleen removal device capable of automatically decomposing tissues in minimally invasive splenectomy, comprising an inner cylinder, characterized in that: The outer part of the inner cylinder is rotatably connected to the outer cylinder, a support plate is installed at the end of the outer cylinder, a mounting rod is installed inside the inner cylinder, a connecting platform is slidably connected to the surface of the mounting rod, a cutting head is arranged inside the inner cylinder, a connecting rod is rotatably connected to the end of the connecting platform, a connecting block is rotatably connected to the end of the connecting rod, a first pull rod is installed at the back end of the connecting block, a limit plate is installed inside the inner cylinder, the first pull rod is slidably connected to the limit plate, a crushing head is arranged inside the inner cylinder, a bump is installed at the end of the cutting head, and a connecting plate is slidably connected to the surface of the first pull rod; An offset adjustment mechanism, which is arranged at the back end of the cutting head and the side end of the mounting rod, and is used to adjust the angle of the cutting head, and can adjust the internal spacing of the cutting head while adjusting the angle; A crushing follower assembly, which is arranged on the surface of the mounting rod and inside the cutting head. The crushing follower assembly is used to enable the crushing head to deviate with the cutting head when the cutting head angle deviates, so that the inside can also be crushed and decomposed when the cutting head deflects; Cut-off locking mechanism; the cut-off locking mechanism is arranged inside the other end of the inner tube, and the cut-off locking mechanism can lock the first pull rod, so that the medical staff does not need to continuously pull the first pull rod, thereby reducing the hand fatigue of the medical staff.

2. The spleen removal device capable of automatically decomposing tissues in minimally invasive splenectomy according to claim 1, characterized in that: The number of the connecting platforms is two groups, and they are symmetrically distributed on the surface of the mounting rod; the cutting head is in the shape of a frustum, and a cavity is opened inside the cutting head.

3. The spleen removal device capable of automatically decomposing tissues in minimally invasive splenectomy according to claim 2, characterized in that: A spring is sleeved on the surface of the first pull rod; one end of the spring is connected to the limiting plate, and the other end is connected to the back end of the connecting block.

4. The spleen removal device capable of automatically decomposing tissues in minimally invasive splenectomy according to claim 3, characterized in that: The surface of the crushing head is provided with arc stripes, four groups of the arc stripes are distributed in a circular shape on the surface of the crushing head, and the protrusion at the end of the crushing head is in the shape of a quadrangular pyramid.

5. The spleen removal device capable of automatically decomposing tissues in minimally invasive splenectomy according to claim 4, characterized in that: The offset adjustment mechanism includes a second pull rod slidably connected to the inside of the limit plate, and also includes a sliding table sliding in the sliding groove of the side wall of the back end of the cutting head, a sliding rod is installed at the end of the second pull rod, both ends of the sliding rod are slidably connected to the sliding table, the other end of the second pull rod is connected to the connecting plate, and the connecting plate is slidably connected to the surface of the first pull rod, the back end of the cutting head rotates inside the mounting table, the mounting table is slidably connected to the connecting table, a long plate is installed on the surface of the second pull rod, and a first oil tank is installed on the surface of the long plate, a first piston rod is slidably connected inside the first oil tank, the end of the first piston rod is connected to the limit plate, a second oil tank is installed inside the connecting table, a second piston rod is slidably connected inside the second oil tank, the second piston rod is connected to the mounting table, and a hose is connected between the second oil tank and the first oil tank.

6. The spleen removal device capable of automatically decomposing tissues in minimally invasive splenectomy according to claim 5, characterized in that: Springs are installed at both ends of the slide, and the two ends of the spring are connected to the inner wall of the slide groove on the back side wall of the cutting head. A torsion spring is installed between the inside of the cutting head and the mounting platform.

7. The spleen removal device capable of automatically decomposing tissues in minimally invasive splenectomy according to claim 6, characterized in that: The crushing follower assembly includes a first elastic telescopic rod installed at the bottom of the back end of the cutting head, and also includes a turntable sleeved on the surface of the mounting rod, a ring is installed at the bottom of the first elastic telescopic rod, a second elastic telescopic rod is installed at the end of the turntable, a motor is installed at the end of the second elastic telescopic rod, an electric push rod is installed at the output end of the motor, the protruding end of the electric push rod is connected to the crushing head, and the ring is rotatably connected to the electric push rod.

8. The spleen removal device capable of automatically decomposing tissues in minimally invasive splenectomy according to claim 7, characterized in that: The number of the first elastic telescopic rods is two groups, and the two groups of the first elastic telescopic rods are symmetrically distributed on the surface of the ring.

9. The spleen removal device capable of automatically decomposing tissues in minimally invasive splenectomy according to claim 8, characterized in that: The cutting and locking mechanism comprises a locking platform installed inside the inner tube, a boss is installed on the surface of the first pull rod, an elastic block is installed inside the boss, a pressing block slides in the internal cavity of the locking platform, and the end of the pressing block is connected to the third pull rod.

10. The spleen removal device capable of automatically decomposing tissues in minimally invasive splenectomy according to claim 9, characterized in that: One end of the locking platform is provided with a chamfer, the end of the pressing block is designed to be inclined, and the other end of the pressing block is provided with a tension spring.

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