A claw mechanism for removing diseased tissue in the body

Abstract

The present invention is applicable to the technical field of medical devices, and provides a claw mechanism for removing diseased tissue in the body. The claw mechanism includes an opening and closing mechanism and a clamping mechanism, and the clamping mechanism is sleeved in the opening and closing mechanism; the clamping mechanism includes a sliding frame, a tissue wrapping film, and a removal forceps, the sliding frame can be slidably sleeved in the opening and closing mechanism, the tissue wrapping film is arranged in the sliding frame, the clamping end of the removal forceps is penetrated in the sliding frame, one end of the sliding frame is surrounded by a claw structure, and can be opened and closed with the opening and closing mechanism; one end of the tissue wrapping film is connected to one end of the sliding frame to form a first opening, and the other end of the tissue wrapping film is connected to the other end of the sliding frame to form a second opening, and the second opening is opened and closed with one end of the sliding frame. The present invention effectively isolates the diseased tissue from other body tissues in the abdominal cavity through the tissue wrapping film to avoid contaminating other body tissues in the abdominal cavity.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a claw-type mechanism for removing diseased tissue in a body. Background Art

[0002] In the case of laparotomy, the laparotomy incision is large and the bleeding is high. Therefore, the patient's recovery is slow and large scars are left, which also brings inconvenience to the patient's life. In order to overcome the disadvantages of such laparotomy, new surgical methods such as minimally invasive surgery and scarless surgery are usually used. Scarless surgery is to move the surgical tools to the surgical site in the patient's body through the holes naturally existing in the human body, avoiding cutting the patient's body. Compared with laparotomy, the amount of bleeding is significantly reduced, so the patient's recovery time is shortened and the external scars are small.

[0003] In the surgical operation in the abdominal cavity through the anus, a surgical channel is formed by dilating the anus. The surgical channel is used for various surgical tools to be inserted into the patient's anus and pass through the surgical channel into the patient's abdominal cavity, and the diseased tissue in the abdominal cavity is removed by the surgical tools. However, the surgical channel formed by the existing surgical operation instruments for dilating the anus is limited in space, resulting in limited surgical operation space for doctors, which is not conducive to the convenience of surgical operations. In addition, during the operation of the surgical tools, it is easy to interfere with other body tissues in the abdominal cavity and cause contamination to the abdominal cavity. Summary of the invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide a claw-type mechanism for removing diseased tissue in the body, aiming to solve the problem that the surgical channel formed by the expansion of the anus by surgical operating instruments in the prior art cannot effectively avoid the contact between the diseased tissue and other body tissues when using surgical tools to remove the diseased tissue in the human body, resulting in contamination of other body tissues in the abdominal cavity.

[0005] The embodiment of the present invention is implemented as follows: a claw mechanism for removing diseased tissue in the body is provided, which includes an opening and closing mechanism for opening and forming a surgical channel from the anus into the abdominal cavity and a clamping mechanism for clamping the diseased tissue, wherein the clamping mechanism is sleeved inside the opening and closing mechanism;

[0006] The clamping mechanism comprises a sliding frame, a tissue wrapping film and a removal forceps, wherein the sliding frame can be slidably sleeved in the opening and closing mechanism, the tissue wrapping film is arranged in the sliding frame, the clamping end of the removal forceps is inserted into the sliding frame, and one end of the sliding frame is surrounded by a claw structure and can be opened and closed together with the opening and closing mechanism;

[0007] The tissue wrapping film is arranged to form a channel, one end of the tissue wrapping film is connected to one end of the sliding frame to form a first opening for the removal forceps to enter and exit, and the other end of the tissue wrapping film is connected to the other end of the sliding frame to form a second opening for the diseased tissue to enter, and the second opening opens and closes together with one end of the sliding frame.

[0008] Further, the opening and closing mechanism comprises an outer tube, an adjustment ring and a plurality of curved and bendable support rods, the adjustment ring is sleeved on the outer wall of the outer tube, and the adjustment ring is threadedly connected to the outer tube, one end of the plurality of support rods is rotatably connected to the outer tube through a torsion spring, and is evenly distributed along the circumferential direction of the outer tube, and the plurality of support rods are arranged around the periphery of the tissue wrapping film to form a claw structure;

[0009] The sliding skeleton comprises an inner cylinder and a plurality of bendable sliding strips, one end of the tissue wrapping film having a first opening is connected to the inner cylinder, one end of the tissue wrapping film having a second opening is connected to one end of the plurality of sliding strips, the other ends of the plurality of sliding strips are connected to the inner cylinder and are evenly distributed along the circumferential direction of the inner cylinder, the inner cylinder is movably sleeved in the outer cylinder, and the sliding strips are correspondingly slidably sleeved in the support rod along the extension direction of the support rod;

[0010] One end of the adjusting ring close to the supporting rod is sleeved on the end of the supporting rod. When the adjusting ring is tightened, the adjusting ring presses against the supporting rods to rotate and close. When the adjusting ring is loosened, the supporting rods rotate and open under the restoring force of the torsion spring. The opening of the supporting rods drives the sliding strips and the second opening to open. When the second opening is opened, the tissue wrapping film can form a trumpet-shaped structure to accommodate the diseased tissue.

[0011] Further, the support rod member includes a plurality of curved support rods and a rotating member, the rotating member is rotatably connected to the outer tube through the torsion spring, one end of the plurality of support rods is connected to the rotating member, the other end of the plurality of support rods is a free end, the slide bar is slidably accommodated in the support rod, and the periphery of one end of the tissue wrapping film having the second opening is connected to the end of the slide bar;

[0012] The rotating member has an inclined surface, and the inclined direction of the inclined surface extends from an end close to the adjusting ring to an end away from the adjusting ring, and gradually moves away from the axial direction of the outer cylinder.

[0013] Furthermore, a sliding groove for the sliding bar to pass through is arranged inside the support rod and on the rotating member.

[0014] Furthermore, the slide bar and the tissue wrapping film are connected via a connecting piece passing through the slide groove.

[0015] Furthermore, a limiting member is fixed to the free end of the support rod, and the limiting member closes the end of the sliding groove.

[0016] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: the present invention inserts the opening and closing mechanism in a closed state from the anus of the body to the desired position in the abdominal cavity, then opens the opening and closing mechanism to establish a surgical channel, and after the diseased tissue in the abdominal cavity is removed through the surgical channel, the sliding slide is sleeved in the opening and closing mechanism along the surgical channel, and after the sliding slide is slid to the desired position, the removal forceps are used to pass through the first opening on the tissue wrapping film and extend into the channel surrounded by the tissue wrapping film, and the diseased tissue is clamped and dragged from the second opening on the tissue wrapping film into the channel surrounded by the tissue wrapping film, and then the opening and closing mechanism is closed and withdrawn from the abdominal cavity to the anus. During the withdrawal of the opening and closing mechanism, the tissue wrapping film can effectively isolate the diseased tissue from other body tissues in the abdominal cavity to avoid contaminating other body tissues in the abdominal cavity, and can be well applied to minimally invasive medical surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure provided by an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 A schematic diagram of the structure of the clamping mechanism;

[0019] Figure 3 Figure 2 Schematic diagram of the structure of the tissue wrapping film in;

[0020] Figure 4 yes Figure 1 A schematic diagram of the structure of the opening and closing mechanism;

[0021] Figure 5 yes Figure 4 A schematic diagram of the structure of the outer cylinder in FIG.

[0022] Figure 6 yes Figure 4 A schematic diagram of the structure of the rotating part in FIG.

[0023] Figure 7 yes Figure 4 Schematic diagram of the structure of the support rod. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. 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.

[0025] like Figure 1 As shown, a claw mechanism for removing diseased tissue in the body provided by an embodiment of the present invention is shown. The claw mechanism includes an opening and closing mechanism 1 for opening and closing and a clamping mechanism 2 for clamping the diseased tissue, and the clamping mechanism 1 is sleeved inside the opening and closing mechanism 1. Specifically, the opening and closing mechanism 1 is used to enter the abdominal cavity from the anus to open and form a surgical channel 10, and can close the surgical channel and remove the anus from the abdominal cavity. Part of the structure on the clamping mechanism 2 can be opened with the opening of the opening and closing mechanism 1, and closed with the closing of the opening and closing mechanism 1.

[0026] Please also read Figure 2 and Figure 3 As shown, the clamping mechanism 2 includes a sliding frame 21, a tissue wrapping film 22 and a removal forceps 23. The sliding frame 21 can be slidably and detachably sleeved in the opening and closing mechanism 1. The tissue wrapping film 22 is arranged in the sliding frame 21. The clamping end of the removal forceps 23 is inserted into the sliding frame 21. After the diseased tissue in the abdominal cavity is clamped, it is dragged into the tissue wrapping film 22. The end of the sliding frame 21 away from the handheld end of the removal forceps 23 is surrounded by a claw structure and can be opened and closed together with the opening and closing mechanism 1. Specifically, the tissue wrapping film 22 is surrounded by a channel 220 for the removal forceps to pass through. One end of the tissue wrapping film 22 is connected to one end of the sliding frame 21 to form a first opening 221 for the removal forceps 23 to enter and exit. The other end of the tissue wrapping film 22 is connected to the other end of the sliding frame 21 to form a second opening 222 for the diseased tissue to enter. The second opening 222 opens and closes together with one end of the sliding frame 21.

[0027] Please also refer to 4 and Figure 5As shown, the opening and closing mechanism 1 includes an outer cylinder 11, an adjusting ring 12, and a plurality of curved and bendable support rods 13, wherein the outer cylinder 11 and the adjusting ring 12 are both annular, the adjusting ring 12 is sleeved on the outer wall of the outer cylinder 11, and the adjusting ring 12 is threadedly connected to the outer cylinder 11, so that the adjusting ring 12 can move along the axial direction of the outer cylinder 11, and one end of the plurality of support rods 13 is rotatably connected to the outer cylinder 11 through a torsion spring 14, and is evenly distributed along the circumferential direction of the outer cylinder 11. Specifically, the outer cylinder 11 is provided with a receiving groove 111 and a clamping groove 112, the clamping groove 112 is provided on opposite sides of the receiving groove 111, one end of the support rod 13 is accommodated in the receiving groove 111, the two ends of the torsion spring 14 are clamped in the clamping groove 112, the middle part of the torsion spring 14 is connected to the support rod 13, and the other end of the plurality of support rods 13 away from the outer cylinder 11 can be opened under the torsion force of the torsion spring 14. A plurality of support rods 13 are arranged around the periphery of the tissue wrapping film 22. The plurality of support rods 13 are opened under the torsion force of the torsion spring 14 to form an open claw structure, which is conducive to increasing the space of the surgical channel 10, facilitating the doctor's surgical operation, and improving the convenience of the surgical operation. The opening and closing mechanism 1 expands the anus by adjusting the adjustment ring 12, and the anal expansion is convenient and comfortable.

[0028] In the above embodiment, the sliding skeleton 21 includes an inner cylinder 211 and a plurality of curved and bendable slide bars 212, the inner cylinder is in a ring shape, one end of the tissue wrapping film 22 having a first opening 221 is connected to the inner cylinder 211, one end of the tissue wrapping film 22 having a second opening 222 is connected to one end of the plurality of slide bars 212, the other ends of the plurality of slide bars 212 are connected to the inner cylinder 211, and are evenly distributed along the circumferential direction of the inner cylinder 211, the periphery of the second opening 222 on the tissue wrapping film 22 forms a multi-point connection with the ends of the plurality of slide bars 212, the inner cylinder 211 is movably sleeved in the outer cylinder 11, the slide bars 212 are slidably sleeved in the support rod 13 corresponding to the extension direction of the support rod 13, and can be opened following the opening of the support rod 13 and closed following the closing of the support rod 13.

[0029] One end of the adjusting ring 12 close to the supporting rod 13 is sleeved on the end of the supporting rod 13. When the adjusting ring 12 is tightened, the adjusting ring 12 can press against the supporting rods 13 to rotate and close. When the adjusting ring is tightened to a certain extent along the axis direction of the outer tube, the ends of the supporting rods 13 are closed. When the adjusting ring is loosened, the supporting rods 13 rotate and open under the restoring force of the torsion spring. The opening of the supporting rods 13 drives the opening of the sliding strips 212 and the second opening 222. When the second opening 222 is opened, the tissue wrapping film 22 can form a trumpet-shaped structure to accommodate the diseased tissue, which is beneficial to the internal space of the tissue wrapping film, and it is convenient for the removal forceps 23 to pass through the tissue wrapping film 22 to clamp the diseased tissue in the abdominal cavity.

[0030] For details, please refer to Figure 6 and Figure 7 As shown, the support rod 13 includes a plurality of curved support rods 131 and a rotating member 132. The curved shape of the support rod 131 matches the curved shape of the slide bar 212. A slide groove 3 for the slide bar 212 to pass through is provided in the support rod 131 and on the rotating member 132, so that the slide bar 212 can slide in the slide groove 3 detachably. The slide bar 212 is connected to the periphery of the second opening 222 of the tissue wrapping film 22 through the slide groove 3 through the connecting member 4. A limiting member 5 is fixed to the free end of the support rod 131, and the limiting member 5 closes the end of the slide groove 3 to prevent the slide bar 212 from sliding out of the support rod 131. The rotating member 132 is rotatably connected to the outer cylinder 11 through the torsion spring 14. One end of the plurality of support rods 131 is connected to the rotating member 132, and the other end of the plurality of support rods 131 is a free end, which can be closed and opened. The slide bar 212 is slidably accommodated in the support rod 131 , and the periphery of one end of the tissue wrapping film 22 having the second opening 222 is connected to the end of the slide bar 212 , forming a multi-point connection with the end of the slide bar 212 .

[0031] In the above embodiment, the rotating member 132 is accommodated in the accommodating groove 111, and the rotating member 132 has an inclined surface 1320 and a groove 1321 for accommodating the torsion spring 14, and the middle part of the torsion spring 14 is fixed in the groove 1321. The inclined surface 1320 forms an annular inclined surface, and the inclined direction of the inclined surface 1320 extends from the end close to the adjusting ring 12 to the end away from the adjusting ring 12 and gradually away from the axis direction of the outer tube 11, so that when the adjusting ring 12 is tightened on the outer tube 11, the adjusting ring 12 presses the inclined surface 1320 on the rotating member 132, and the rotating member 132 rotates under the force of the adjusting ring 12 to overcome the force of the torsion spring 14, thereby driving the support rod 131 to rotate, so that the other end of the support rod 131 performs a retracting and closing action. When the adjusting ring 12 is loosened on the outer cylinder 11 , the rotating member 132 rotates in the opposite direction under the restoring force of the torsion spring 14 , so that the other end of the support rod 131 opens.

[0032] In summary, the claw mechanism for removing diseased tissue in the body of the present invention is inserted from the anus of the body to the desired position in the abdominal cavity through the opening and closing mechanism 1 in a closed state, and then the support rod 131 on the opening and closing mechanism 1 is opened to open the support rod 131 to establish a surgical channel. After the diseased tissue in the abdominal cavity is removed through the surgical channel using surgical tools, the sliding slide 21 on the clamping mechanism 2 is sleeved along the surgical channel in the slide groove 3 on the support rod 131. After the sliding slide 21 is slid to the desired position, the second opening 222 of the tissue wrapping film 22 connected to the sliding frame 21 is opened, and the removal forceps 23 are used to pass through the first opening 221 on the tissue wrapping film 22. The claw mechanism 1 is inserted into the channel 220 surrounded by the tissue wrapping film 22, the diseased tissue is clamped and dragged from the second opening 222 on the tissue wrapping film 22 into the channel 220 surrounded by the tissue wrapping film 22, and then the strut 131 on the opening and closing mechanism 1 is closed, and the opening and closing mechanism 1 is withdrawn from the abdominal cavity to the anus. During the withdrawal of the opening and closing mechanism 1, the tissue wrapping film 22 can effectively isolate the diseased tissue from other body tissues in the abdominal cavity to avoid contamination of other body tissues in the abdominal cavity, and at the same time, it can avoid tumor implantation caused by tumor cell shedding, and the claw mechanism can also be used to expand the contracted anus after surgery and to take specimens from the abdominal wall and chest wall of the body.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A claw mechanism for removing diseased tissue in the body, characterized in that: It includes an opening and closing mechanism for entering the abdominal cavity from the anus to open and form a surgical channel and a clamping mechanism for clamping the diseased tissue, and the clamping mechanism is sleeved in the opening and closing mechanism; The clamping mechanism comprises a sliding frame, a tissue wrapping film and a removal forceps, wherein the sliding frame can be slidably sleeved in the opening and closing mechanism, the tissue wrapping film is arranged in the sliding frame, the clamping end of the removal forceps is inserted into the sliding frame, and one end of the sliding frame is surrounded by a claw structure and can be opened and closed together with the opening and closing mechanism; The tissue wrapping film is arranged to form a channel, one end of the tissue wrapping film is connected to one end of the sliding frame to form a first opening for the removal forceps to enter and exit, and the other end of the tissue wrapping film is connected to the other end of the sliding frame to form a second opening for the diseased tissue to enter, and the second opening opens and closes together with the one end of the sliding frame; The opening and closing mechanism comprises an outer tube, an adjustment ring and a plurality of curved and bendable support rods, the adjustment ring is sleeved on the outer wall of the outer tube, and the adjustment ring is threadedly connected to the outer tube, one end of the plurality of support rods is rotatably connected to the outer tube through a torsion spring, and is evenly distributed along the circumferential direction of the outer tube, and the plurality of support rods are arranged around the periphery of the tissue wrapping film to form a claw structure; The sliding skeleton comprises an inner cylinder and a plurality of bendable sliding strips, one end of the tissue wrapping film having a first opening is connected to the inner cylinder, one end of the tissue wrapping film having a second opening is connected to one end of the plurality of sliding strips, the other ends of the plurality of sliding strips are connected to the inner cylinder and are evenly distributed along the circumferential direction of the inner cylinder, the inner cylinder is movably sleeved in the outer cylinder, and the sliding strips are correspondingly slidably sleeved in the support rod along the extension direction of the support rod; One end of the adjusting ring close to the supporting rod is sleeved on the end of the supporting rod. When the adjusting ring is tightened, the adjusting ring presses against the supporting rods to rotate and close. When the adjusting ring is loosened, the supporting rods rotate and open under the restoring force of the torsion spring. The opening of the supporting rods drives the sliding strips and the second opening to open. When the second opening is opened, the tissue wrapping film can form a trumpet-shaped structure to accommodate the diseased tissue.

2. The claw mechanism according to claim 1, characterized in that: The support rod member includes a plurality of curved support rods and a rotating member, the rotating member is rotatably connected to the outer tube through the torsion spring, one end of the plurality of support rods is connected to the rotating member, the other end of the plurality of support rods is a free end, the slide bar is slidably accommodated in the support rod, and the periphery of one end of the tissue wrapping film having the second opening is connected to the end of the slide bar; The rotating member has an inclined surface, and the inclined direction of the inclined surface extends from an end close to the adjusting ring to an end away from the adjusting ring, and gradually moves away from the axial direction of the outer cylinder.

3. The claw mechanism according to claim 2, characterized in that: A sliding groove for the sliding bar to pass through is arranged in the support rod and on the rotating member.

4. The claw mechanism according to claim 3, characterized in that: The slide bar and the tissue wrapping film are connected via a connecting piece passing through the slide groove.

5. The claw mechanism according to claim 3 or 4, characterized in that: A limiting piece is fixed to the free end of the support rod, and the limiting piece closes the end of the sliding groove.

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