CN111227882A

CN111227882A - Claw type mechanism for taking out in-vivo diseased tissue

Info

Publication number: CN111227882A
Application number: CN201911326361.4A
Authority: CN
Inventors: 王佳雷; 张森; 初升君; 王锡山
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-06-05

Abstract

The invention is suitable for the technical field of medical instruments, and provides a claw type mechanism for taking out in-vivo pathological change tissues. The claw type mechanism comprises an opening and closing mechanism and a clamping mechanism, wherein the clamping mechanism is sleeved in the opening and closing mechanism; the clamping mechanism comprises a sliding framework, a tissue wrapping film and a pair of taking-out forceps, the sliding framework is slidably sleeved in the opening and closing mechanism, the tissue wrapping film is arranged in the sliding framework, a clamping end of the pair of taking-out forceps is arranged in the sliding framework in a penetrating mode, and one end of the sliding framework is enclosed into a claw-type structure and can be opened and closed along with the opening and closing mechanism; one end of the tissue wrapping film is connected to one end of the sliding framework to form a first opening, the other end of the tissue wrapping film is connected to the other end of the sliding framework to form a second opening, and the second opening is opened and closed together with one end of the sliding framework. The invention effectively isolates the pathological change tissue from other organism tissues in the abdominal cavity through the tissue wrapping film, thereby avoiding polluting the other organism tissues in the abdominal cavity.

Description

Claw type mechanism for taking out in-vivo diseased tissue

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a claw type mechanism for taking out in-vivo diseased tissues.

Background

In the case of performing an open incision operation on a patient, the open incision site is large and bleeding during the operation is large, so that the recovery of the patient after the operation is slow, and a large scar remains, which also causes inconvenience to the life of the patient. In order to overcome the disadvantages of the open incision, new surgical methods such as minimally invasive surgery and scar-free surgery are generally adopted; the scar-free operation is to transfer an operation tool to an operation position in a patient body through a hole naturally existing in the human body, so that the body of the patient is prevented from being incised, and compared with the laparotomy, the amount of bleeding is remarkably reduced, so that the recovery time of the postoperative patient is shortened, and the external scar is small.

In carrying out the operation through the anus mouth in to the abdominal cavity, form the operation passageway through expansion anus, the operation passageway is used for each operation instrument to insert patient's anus and passes the abdominal cavity of operation passageway entering patient, utilize the operation instrument to take out the pathological change tissue in the abdominal cavity, and the operation passageway space that current operation apparatus that is used for expanding the anus formed is limited, cause doctor's operation space to be limited, be unfavorable for the convenience of operation, and interfere other organism tissues in the abdominal cavity easily in operation instrument operation process, cause the pollution to the abdominal cavity.

Disclosure of Invention

The technical problem to be solved by the embodiments of the present invention is to provide a claw type mechanism for extracting a diseased tissue in a body, and aims to solve the problem that when a surgical operation instrument in the prior art is used to expand an operation channel formed by an anus, and a diseased tissue in a human body is extracted by using a surgical tool, the contact between the diseased tissue and other body tissues cannot be effectively avoided, so that other body tissues in the abdominal cavity are polluted.

The embodiment of the invention is realized in such a way, and provides a claw type mechanism for taking out in-vivo diseased tissues, which comprises an opening and closing mechanism and a clamping mechanism, wherein the opening and closing mechanism is used for opening from an anus into an abdominal cavity to form an operation channel, and the clamping mechanism is used for clamping the diseased tissues and is sleeved in the opening and closing mechanism;

the clamping mechanism comprises a sliding framework, a tissue wrapping film and a pair of taking-out forceps, the sliding framework is slidably sleeved in the opening and closing mechanism, the tissue wrapping film is arranged in the sliding framework, the clamping end of the taking-out forceps is arranged in the sliding framework in a penetrating mode, and one end of the sliding framework is enclosed into a claw-type structure and can be opened and closed along with the opening and closing mechanism;

the tissue wrapping film is enclosed to form a channel, one end of the tissue wrapping film is connected to one end of the sliding framework to form a first opening for the taking-out forceps to go in and out, the other end of the tissue wrapping film is connected to the other end of the sliding framework to form a second opening for lesion tissues to enter, and the second opening is opened and closed together with one end of the sliding framework.

Furthermore, the opening and closing mechanism comprises an outer barrel, an adjusting ring and a plurality of support rod pieces which are bent and bendable, the adjusting ring is sleeved on the outer wall of the outer barrel and is in threaded connection with the outer barrel, one ends of the support rod pieces are rotatably connected to the outer barrel through torsional springs and are uniformly distributed along the circumferential direction of the outer barrel, and the support rod pieces are arranged around the periphery of the tissue wrapping film to form a claw-shaped structure;

the sliding framework comprises an inner cylinder and a plurality of bendable sliding strips, one end, provided with a first opening, of the tissue wrapping film is connected to the inner cylinder, one end, provided with a second opening, of the tissue wrapping film is connected to one ends of the sliding strips, the other ends of the sliding strips are connected to the inner cylinder and are uniformly 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 sleeved in the supporting rod piece in a sliding manner along the extending direction of the supporting rod piece;

the adjustable ring is close to the one end cover of support member is put the tip of support member, when screwing during the adjustable ring, the adjustable ring supports and presses a plurality of support members are rotatory to be drawn in closed, when loosening during the adjustable ring, a plurality of support members are in the restoring force effect of torsional spring is rotatory down and is opened, the drive of opening of a plurality of support members a plurality of draw runner and second opening open, work as the second opening opens the back, tissue parcel film can form the horn-shaped structure of a holding pathological change tissue.

Furthermore, the supporting rod piece comprises a plurality of bent supporting rods and a rotating piece, the rotating piece is rotatably connected to the outer barrel through the torsion spring, one ends of the supporting rods are connected to the rotating piece, the other ends of the supporting rods are free ends, the sliding strip is slidably accommodated in the supporting rods, and the periphery of one end, provided with a second opening, of the tissue wrapping film is connected to the end part of the sliding strip;

the rotating part is provided with an inclined plane, and the inclined direction of the inclined plane extends from one end close to the adjusting ring to one end far away from the adjusting ring and is gradually far away from the axis direction of the outer barrel.

Furthermore, a sliding groove for the sliding strip to pass through is arranged in the support rod and on the rotating piece.

Further, the slide bar is connected with the tissue wrapping film through the sliding groove through a connecting piece.

Further, a limiting piece is fixed to the free end of the support rod, and the limiting piece seals the end of the sliding groove.

Compared with the prior art, the embodiment of the invention has the advantages that: the invention inserts the lesion tissue from the anus of the body to the required position in the abdominal cavity in a closed state through the opening and closing mechanism, then opens the opening and closing mechanism to establish an operation channel, cuts off the lesion tissue in the abdominal cavity through the operation channel, sleeves the opening and closing mechanism along the operation channel through the sliding carriage, slides the sliding carriage to the required position, utilizes the taking-out forceps to penetrate through the first opening on the tissue wrapping film to extend into the channel surrounded by the tissue wrapping film, clamps the lesion tissue and draws the lesion tissue from the second opening on the tissue wrapping film into the channel surrounded by the tissue wrapping film, then closes the opening and closing mechanism, and withdraws the opening and closing mechanism from the anus from the abdominal cavity, and in the process of withdrawing the opening and closing mechanism, the tissue wrapping film can effectively isolate the lesion tissue from other body tissues in the abdominal cavity to avoid polluting the other body tissues in the abdominal cavity, can be well applied to minimally invasive medical operations.

Drawings

FIG. 1 is a schematic diagram of an overall structure provided by an embodiment of the present invention;

fig. 2 is a schematic structural view of the gripping mechanism in fig. 1;

FIG. 3 is a schematic structural view of the tissue-wrapping film of FIG. 2;

FIG. 4 is a schematic structural view of the opening and closing mechanism in FIG. 1;

FIG. 5 is a schematic structural view of the outer tub of FIG. 4;

FIG. 6 is a schematic view of the structure of the rotating member of FIG. 4;

fig. 7 is a schematic structural view of the stay bar of fig. 4.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Fig. 1 shows a claw-type mechanism for extracting diseased tissue in a body according to an embodiment of the present invention. The claw type mechanism comprises an opening and closing mechanism 1 for opening and closing and a clamping mechanism 2 for clamping lesion tissues, wherein the clamping mechanism 1 is sleeved in the opening and closing mechanism 1. Specifically, the opening and closing mechanism 1 is used for entering the abdominal cavity from the anus and opening to form an operation channel 10, and can be taken out of the anus from the abdominal cavity after the operation channel is closed, and part of the structure on the clamping mechanism 2 can be opened along with the opening of the opening and closing mechanism 1 and closed along with the closing of the opening and closing mechanism 1.

Referring to fig. 2 and fig. 3 together, the clamping mechanism 2 includes a sliding framework 21, a tissue wrapping film 22 and a taking-out forceps 23, the sliding framework 21 is slidably and detachably sleeved in the opening and closing mechanism 1, the tissue wrapping film 22 is disposed in the sliding framework 21, a clamping end of the taking-out forceps 23 penetrates through the sliding framework 21, the diseased tissue in the abdominal cavity is clamped and dragged into the tissue wrapping film 22, and one end of the sliding framework 21, which is far away from a holding end of the taking-out forceps 23, is surrounded into a claw-type structure and can be opened and closed along with the opening and closing mechanism 1. Specifically, the tissue covering film 22 is enclosed into a channel 220 for passing through the extraction forceps, one end of the tissue covering film 22 is connected to one end of the sliding framework 21 to form a first opening 221 for allowing the extraction forceps 23 to enter and exit, the other end of the tissue covering film 22 is connected to the other end of the sliding framework 21 to form a second opening 222 for allowing the lesion tissue to enter, and the second opening 222 is opened and closed along with one end of the sliding framework 21.

Referring to fig. 4 and 5, 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 circular, the adjusting ring 12 is sleeved on an outer wall of the outer cylinder 11, the adjusting ring 12 is in threaded connection with the outer cylinder 11, so that the adjusting ring 12 can move along an axial direction of the outer cylinder 11, and one end of each of the plurality of support rods 13 is rotatably connected to the outer cylinder 11 through a torsion spring 14 and is uniformly distributed along a circumferential direction of the outer cylinder 11. Specifically, the outer barrel 11 is provided with an accommodating groove 111 and a clamping groove 112, the clamping groove 112 is arranged on two opposite sides of the accommodating groove 111, one end of the support rod 13 is accommodated in the accommodating groove 111, two ends of the torsion spring 14 are clamped in the clamping groove 112, the middle of the torsion spring 14 is connected with the support rod 13, and the other ends of the support rods 13 far away from the outer barrel 11 can be opened under the torsion acting force of the torsion spring 14. The plurality of support rod members 13 are arranged around the tissue wrapping film 22, and the plurality of support rod members 13 are opened under the torsion force of the torsion spring 14 to form an open claw-type structure, so that the space of the operation channel 10 is increased, the operation of a doctor is facilitated, and the convenience of the operation is improved. The opening and closing mechanism 1 expands the anus by adjusting the adjusting ring 12, and the anus expansion is convenient and comfortable.

In the above embodiment, the sliding framework 21 includes the inner cylinder 211 and the plurality of curved and bendable sliding bars 212, the inner cylinder is in a ring shape, one end of the tissue-covering film 22 having the first opening 221 is connected to the inner cylinder 211, one end of the tissue-covering film 22 having the second opening 222 is connected to one end of the plurality of sliding bars 212, the other ends of the plurality of sliding bars 212 are connected to the inner cylinder 211 and are uniformly distributed along the circumferential direction of the inner cylinder 211, the periphery of the second opening 222 on the tissue-covering film 22 and the ends of the plurality of sliding bars 212 form a multi-point connection, the inner cylinder 211 is movably sleeved in the outer cylinder 11, the sliding bars 212 are correspondingly slidably sleeved in the support rod 13 along the extending direction of the support rod 13, and can be opened along with the opening of the support rod 13 and be closed along with the closing of the support rod.

The adjusting ring 12 is close to one end of the supporting rod 13 and is sleeved with the end part of the supporting rod 13, when the adjusting ring 12 is screwed, the adjusting ring 12 can press the supporting rods 13 to rotate and furl, and when the adjusting ring is screwed to a certain degree along the axis direction of the outer cylinder, the end parts of the supporting rods 13 are closed. When the adjusting ring is unscrewed, the plurality of supporting rods 13 rotate under the restoring force of the torsion spring to open, the plurality of sliding strips 212 and the second opening 222 are driven by the opening of the plurality of supporting rods 13 to open, and after the second opening 222 opens, the tissue wrapping film 22 can form a horn-shaped structure for accommodating pathological change tissues, so that the internal space of the tissue wrapping film is facilitated, and the forceps 23 can be taken out to penetrate through the tissue wrapping film 22 to clamp the pathological change tissues in the abdominal cavity.

Specifically, referring to fig. 6 and fig. 7 together, the support rod 13 includes a plurality of curved support rods 131 and a rotating member 132, the curved shape of the support rods 131 matches the curved shape of the slide bar 212, and the slide grooves 3 for the slide bar 212 to pass through are disposed in the support rods 131 and the rotating member 132, so that the slide bar 212 can detachably slide in the slide grooves 3. The slide bar 212 is connected to the periphery of the second opening 222 of the tissue-covering film 22 through the chute 3 by the connecting member 4. The free end of the stay 131 is fixed with a stopper 5, and the stopper 5 closes the end of the chute 3 to prevent the slide bar 212 from sliding out of the stay 131. The rotating member 132 is rotatably connected to the outer tub 11 by a torsion spring 14, one end of the plurality of stay bars 131 is connected to the rotating member 132, and the other end of the plurality of stay bars 131 is a free end and can be closed and opened. The slide bar 212 is slidably received within the strut 131, and the tissue-covering film 22 has an end with a second opening 222 that is peripherally attached to the end of the slide bar 212, forming a multi-point connection with the end of the slide bar 212.

In the above embodiment, the rotating element 132 is accommodated in the accommodating groove 111, the rotating element 132 has an inclined surface 1320 and a groove 1321 for accommodating the torsion spring 14, and the middle portion of the torsion spring 14 is fixed in the groove 1321. The inclined surface 1320 forms an annular inclined surface, and the inclined surface 1320 extends from the end close to the adjusting ring 12 to the end far from the adjusting ring 12, so that when the adjusting ring 12 is screwed on the outer cylinder 11, the adjusting ring 12 presses the inclined surface 1320 on the rotating member 132, and the rotating member 132 rotates under the action of the adjusting ring 12 against the action of the torsion spring 14, thereby driving the stay 131 to rotate, and closing the other end of the stay 131. When the adjusting ring 12 is unscrewed on the outer cylinder 11, the rotating member 132 is reversely rotated by the restoring force of the torsion spring 14, so that the other end of the stay 131 is opened.

To sum up, the claw mechanism for extracting diseased tissue in vivo of the present invention is inserted into a desired position in an abdominal cavity from an anus of a body through the opening and closing mechanism 1 in a closed state, then the stay 131 on the opening and closing mechanism 1 is opened to establish an operation channel, after the diseased tissue in the abdominal cavity is excised through the operation channel by using an operation tool, the slide carriage 21 on the grasping mechanism 2 is sleeved in the chute 3 on the stay 131 along the operation channel, after the slide carriage 21 is slid to the desired position, the second opening 222 of the tissue wrapping film 22 connected to the slide carriage 21 is opened, the extracting forceps 23 is inserted into the channel 220 surrounded by the tissue wrapping film 22 through the first opening 221 on the tissue wrapping film 22, the diseased tissue is pulled into the channel 220 surrounded by the tissue wrapping film 22 from the second opening 222 on the tissue wrapping film 22, then after closing the vaulting pole 131 on opening and closing the mechanism 1, will open and close the mechanism 1 and withdraw from the anus from the abdominal cavity, in the in-process that opening and closing the mechanism 1 and withdraw from, the tissue parcel film 22 can effectively keep apart pathological change tissue and other organism tissues in the abdominal cavity, avoids polluting other organism tissues in the abdominal cavity, can avoid simultaneously that the tumor cell takes off and arouses the tumour to plant the transplantation after can avoiding, and this claw formula mechanism still can be used for the postoperative to expand the anus of shrink and be used for putting and get the sample on the abdominal wall and the chest wall of body.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A claw type mechanism for taking out in-vivo diseased tissues is characterized by comprising an opening and closing mechanism and a clamping mechanism, wherein the opening and closing mechanism is used for opening from an anus into an abdominal cavity to form an operation channel, and the clamping mechanism is used for clamping the diseased tissues and is sleeved in the opening and closing mechanism;

2. The jaw mechanism as claimed in claim 1, wherein said opening and closing mechanism comprises an outer cylinder, an adjusting ring and a plurality of curved and bendable support rods, said adjusting ring is sleeved on the outer wall of said outer cylinder and is screwed with said outer cylinder, one end of said plurality of support rods is rotatably connected to said outer cylinder by a torsion spring and is uniformly distributed along the circumferential direction of said outer cylinder, said plurality of support rods surround the periphery of said tissue wrapping film to form a jaw structure;

3. The jaw mechanism of claim 2, wherein said support rod member comprises a plurality of curved support rods and a rotating member, said rotating member is rotatably connected to said outer cylinder via said torsion spring, one end of said plurality of support rods is connected to said rotating member, the other end of said plurality of support rods is a free end, said slide bar is slidably received in said support rods, and one end of said tissue-covering film having a second opening is peripherally connected to an end of said slide bar;

4. A pawl mechanism according to claim 3, wherein a runner is provided in the strut and on the rotary member for the passage of the runner.

5. The jaw mechanism of claim 4, wherein said slide is connected to said tissue covering membrane by a connector through said chute.

6. A claw mechanism as claimed in claim 4 or 5, wherein a stop is secured to the free end of the strut, the stop closing the end of the runner.