CN113598856B

CN113598856B - Minimally invasive suturing device for laparoscopic surgery

Info

Publication number: CN113598856B
Application number: CN202111084685.9A
Authority: CN
Inventors: 马月龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-17
Filing date: 2021-09-17
Publication date: 2022-07-01
Anticipated expiration: 2041-09-17
Also published as: CN113598856A

Abstract

A minimally invasive suturing device for laparoscopic surgery belongs to the technical field of medical treatment, and comprises a suturing component and a second limiting block, wherein the suturing component comprises a suturing block, a first sliding groove is formed in the second limiting block, a sliding block is slidably connected in the first sliding groove, a clamping block is fixedly connected to one side, close to the first sliding groove, of the suturing block, a clamping groove is formed in the sliding block, the clamping block is clamped with the sliding block through the clamping groove, a lining is nested in the clamping groove and made of a rubber composite material, the stability between the suturing component and the suturing device can be further improved through the arrangement of the clamping groove and the clamping block, the defect that the suturing block is easy to shake after being installed when a traditional suturing device is replaced by a plugging mode is overcome, and meanwhile, the first limiting block and the second limiting block are connected in a rotating mode, the problem that the first limiting block and the second limiting block are rubbed due to installation of the sewing blocks can be effectively solved.

Description

Minimally invasive suturing device for laparoscopic surgery

Technical Field

The invention relates to the technical field of medical treatment, in particular to a minimally invasive suturing device for laparoscopic surgery.

Background

The laparoscopic surgery is one of minimally invasive surgeries, the laparoscopic surgery is a medical instrument with a miniature camera, the laparoscopic surgery is a surgery performed by using the laparoscopic and related instruments thereof, the inside of a human body is observed by using the laparoscopic in the surgery process, so that the operation of the related medical surgery is completed, and tiny wounds generated by the laparoscopic surgery are often sutured by using a minimally invasive suturing device, so that the whole process of the laparoscopic surgery is completed.

In the prior art, patent publication No. CN208958200U discloses a minimally invasive suturing device, which comprises a brake, an elongated shaft, a ball joint and a suturing head, wherein the brake, the elongated shaft, the ball joint and the suturing head are sequentially connected, the ball joint comprises a bending-adjusting hemisphere and a rotating hemisphere, a proximal end surface of the rotating hemisphere is attached to a distal end surface of the bending-adjusting hemisphere, a distal end of the rotating hemisphere is connected to a proximal end of the suturing head, a rotating part and a bending regulating part are arranged in the slender shaft along the axial direction, the proximal end of the rotating part is connected with a brake, a channel for the rotating piece to pass through is arranged in the ball joint, the rotating piece extends along the central axis direction of the ball joint, the far end is connected with the suture head, the rotating part is controlled by the brake to lead the suture head and the rotating hemisphere to synchronously rotate along the direction of the central axis, the near end of the bending adjusting part is connected with the brake, the far end of the bending adjusting part is connected with the bending adjusting hemisphere, the bending adjusting piece is controlled by the brake to enable the bending adjusting hemisphere to drive the rotating hemisphere to rotate so as to realize the swinging of the sewing head relative to the central axis of the spherical joint; make the sewing head turn round rotatory nimble, realize the accurate location of sewing head, however, when the sewing head is changed to the sewing device, the mode of adopted plug-in, lead to sewing device easily and sew up and appear the friction between the head, thereby after changing the sewing head many times, certain gap appears in the plug department of sewing device and sewing head, thereby the phenomenon that the sewing head that leads to the installation rocked appears in sewing device inside, the sewing head that rocks when sewing device sews up, cause the sewing accident of sewing up the in-process easily, thereby be unfavorable for medical instrument's development, for this reason, a laparoscopic surgery minimal access suturing device has been proposed.

Disclosure of Invention

The invention aims to provide a minimally invasive suturing device for laparoscopic surgery, which solves the problems in the background art through the arrangement of a clamping groove and a clamping block and the nesting of a lining in the clamping groove.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a laparoscopic surgery wicresoft suturing device, is including sewing up subassembly and second stopper, it includes the seam piece to sew up the subassembly, first spout has been seted up in the second stopper, sliding connection has the slider in the first spout, the seam piece is close to one side fixedly connected with joint piece of first spout, the joint groove has been seted up to the inside of slider, the joint piece passes through joint groove and slider joint, the inside nestification in joint groove has the bush, the material of bush is rubber composite.

As a further scheme of the invention: the rubber composite material is prepared by taking a rubber base as a main body, adding polyethylene fibers, and performing crosslinking, rubber wiping and vulcanization, wherein the rubber base is natural rubber, and particles obtained by processing at the curing temperature of 157 ℃ are partially melted in a rubber matrix in the vulcanization operation process.

As a still further scheme of the invention: the sewing assembly further comprises a swinging block, the swinging block rotates on the sewing block, a fixed column is arranged on the sewing block, a groove is formed in the right side of the swinging block, the swinging block is sleeved on the fixed column through the groove and is in sliding connection with the fixed column, a second sliding groove is formed in the sewing block, an arc-shaped needle is installed on the sewing block and is in sliding connection with the sewing block through the second sliding groove, and the bottom end of the second limiting block is rotatably connected with the rotating block.

As a still further scheme of the invention: including dead lever and control assembly, dead lever and control assembly fixed connection, control assembly's lower extreme rotates and is connected with the extruded article, the extruded article is close to control assembly's tip fixedly connected with haulage rope, the haulage rope extend to control assembly's inside and with control assembly sliding connection, the haulage rope passes the fixed cover of second stopper and cup joints on the turning block.

As a still further scheme of the invention: the turning block rotates through torsional spring and second stopper and is connected, the seam piece cup joints on the turning block, and the inside wall contactless of seam piece and turning block, fixedly connected with connecting rod on the turning block, the swing piece rotates through connecting rod and turning block and is connected, one side fixedly connected with grip block that the turning block was kept away from to the swing piece, the fixed cup joint of grip block is on the arc needle.

As a still further scheme of the invention: the rotating block is rotatably connected with the second limiting block through a torsion spring.

As a still further scheme of the invention: install the dwang on the second stopper, the second stopper rotates through the dwang and is connected with first stopper, it inserts in first stopper and second stopper to sew up the subassembly.

Compared with the prior art, the invention has the beneficial effects that:

1. in the invention, the arrangement of the clamping groove and the clamping block can further improve the stability between the suturing assembly and the suturing device, solves the problems that the traditional suturing device adopts a plug-pull mode to cause friction between the first limiting block and the second limiting block when replacing the suturing block, further a gap is generated between the first limiting block and the second limiting block, the first limiting block and the second limiting block after generating the gap are not beneficial to the installation of the suturing block, and the generated gap causes instability among the first limiting block, the second limiting block and the suturing block, therefore, the suturing device is easy to shake during the suturing process, increases the risk during the operation process, is not beneficial to the development of the suturing device in the field of medical instruments, can improve the stability between the second limiting block and the suturing block by the clamping mode again after installation, and simultaneously, adopt the pivoted mode to be connected between first stopper and the second stopper, the installation that can effectual solution seam piece causes first stopper and the frictional problem of second stopper, and the setting of cover piece can be convenient for the installation of arc needle, and the arc needle of being convenient for sews up the operation.

2. Meanwhile, because the hardness of the particles is higher than that of the rubber matrix material, the actual contact area is relatively small due to the bearing effect of the particles, and the rolling friction effect is achieved, the friction coefficient of the rubber material can be effectively improved due to the addition of the particles, the stability between the clamping block and the clamping groove can be further improved, the defect that the sewing block is easy to shake is reduced, before the polyethylene fiber and the natural rubber are mixed, the polyethylene fiber is subjected to crosslinking treatment, the polyethylene fiber is soaked in chromic acid solution for 5min, impurities in the polyethylene fiber are dissolved by chromic acid, the interference caused when the polyethylene fiber and the natural rubber of the impurities are mixed can be effectively prevented, the polyethylene fiber is placed into dibenzoyl peroxide with the concentration of 20% to react for 30min after the impurities are dissolved, and the characteristics of dibenzoyl oxide slightly soluble and water are utilized, the formation of polyethylene crosslinking is promoted, so that the physical properties of polyethylene fibers can be further improved, the mixing of the polyethylene fibers and natural rubber is facilitated, the physical properties of the mixed rubber composite material are improved, and the problem that the traditional single rubber has unstable physical properties is solved.

3. At polyethylene fiber and the mixing in-process of nature, the mode of adopting the frictioning goes on, utilizes calender roller linear velocity ratio's shearing force and pressure at the in-process of frictioning, makes during the natural gum extrudes the gap into polyethylene fiber to promote fibrous homodisperse, the frictioning can be filled polyethylene fiber's space with the natural gum, thereby can effectually promote polyethylene fiber and the abundant nature that the natural gum mixes, and then promote the homogeneity that makes rubber composite material physical property degree and distribute.

4. After cross-linking and rubber wiping, respectively carrying out vulcanization tests on the rubber composite material subjected to rubber wiping at 150 ℃ and 160 ℃, obtaining the composite material with the friction coefficient lower than 150 ℃ after the composite material is vulcanized at 160 ℃ by using a friction coefficient tester, and then testing the temperature between 150 ℃ and 160 again, wherein the tests show that the friction coefficient between 150 ℃ and 157 ℃ is unchanged, and the particles start to be completely melted in the natural rubber along with the increase of the temperature between 158 ℃ and 160 ℃, so that the friction coefficient is reduced, therefore, the temperature between 150 ℃ and 157 ℃ is selected for vulcanization, the higher the temperature is, the less the required vulcanization time is, and therefore, when the vulcanization temperature is controlled to be 157 ℃, the excellent physical properties of the composite rubber material are obtained, and meanwhile, the synthesis efficiency of the composite rubber material can be effectively improved, has certain economic significance in the actual preparation process of the composite rubber material.

Drawings

Fig. 1 is a schematic structural view of a minimally invasive suturing device for laparoscopic surgery.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is a schematic structural view of the first stopper and the second stopper in fig. 2 when they rotate.

Fig. 4 is an enlarged view at B in fig. 3.

Fig. 5 is a perspective view of the slider of fig. 4.

FIG. 6 is a schematic view of a suturing assembly.

Fig. 7 is a perspective view of a stitching block.

FIG. 8 is an electron micrograph of polyethylene fibers during vulcanization.

FIG. 9 is an electron micrograph of polyethylene fibers during vulcanization.

In the figure: 100. fixing the rod; 200. a control component; 210. an extrusion; 211. a hauling rope; 300. an adjusting block; 400. a first stopper; 401. rotating the rod; 410. a second limiting block; 411. a first chute; 412. a slider; 4121. a clamping groove; 413. a bushing; 420. a rotating shaft; 500. a suturing assembly; 510. rotating the block; 520. a stitching block; 530. a second chute; 531. an arcuate needle; 540. a swing block; 541. a connecting rod; 542. a clamping block; 550. a clamping block; 600. and (5) sleeving blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In addition, an element described herein as being "secured to" or "disposed on" another element may be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Referring to fig. 1 to 9, in an embodiment of the present invention, a minimally invasive suturing apparatus for laparoscopic surgery includes a fixing rod 100, a control assembly 200 and a suturing assembly 500, the fixing rod 100 is capable of facilitating the suturing assembly 500 to extend into an abdominal cavity, the suturing operation of the entire suturing apparatus is controlled by the control assembly 200, the suturing assembly 500 is used for suturing minimally invasive laparoscopic surgery, the fixing rod 100 is fixedly connected with the control assembly 200, the lower end of the control assembly 200 is rotatably connected with an extrusion piece 210, the end of the extrusion piece 210 close to the control assembly 200 is fixedly connected with a traction rope 211, the traction rope 211 is arranged to drive the suturing apparatus to perform suturing operation, the traction rope 211 extends into the control assembly 200 and is slidably connected with the control assembly 200, one side of the fixing rod 100 far from the control assembly 200 is rotatably connected with an adjusting block 300, the adjusting block 300 rotates 180 degrees relative to the fixing rod 100, and the adjusting block 500 degrees rotates, the sewing assembly 500 can be driven to rotate through the arrangement of the adjusting block 300, so that the sewing assembly 500 can extend into the abdomen to be operated, the minimally invasive sewing operation of the sewing assembly 500 after the operation is realized, one side of the adjusting block 300, which is far away from the fixing rod 100, is rotatably connected with the rotating shaft 420, one side of the rotating shaft 420, which is far away from the adjusting block 300, is fixedly connected with the second limiting block 410, the second limiting block 410 can be further driven to rotate for 360 degrees through the arrangement of the rotating shaft 420, the sewing assembly 500 can be adjusted in multiple angles, so that the sewing flexibility of the sewing assembly 500 is improved, the rotating rod 401 is installed on the second limiting block 410, the second limiting block 410 is rotatably connected with the first limiting block 400 through the rotating rod 401, the rotation of the first limiting block 400 is controlled through the arrangement of the rotating rod 401, the assembling operation of the sewing assembly 500 is convenient, and the replacement and the disinfection operation of the sewing assembly 500 are convenient, the inconvenient drawback of traditional plug-in suturing device dismantlement has been solved, the bottom of second stopper 410 is rotated and is connected with turning block 510, drives the rotation of turning block 510 through haulage rope 211, and then realizes suturing of suturing device, it inserts in first stopper 400 and second stopper 410 to sew up subassembly 500.

The sewing assembly 500 comprises a sewing block 520 and a swinging block 540, the swinging block 540 rotates on the sewing block 520, the sewing block 520 is provided with a fixed column, the limit of the swinging block 540 is realized through the fixed column, the right side of the swinging block 540 is provided with a groove, the swinging path of the swinging block 540 can be further limited by the arrangement of the groove, the swinging block 540 is sleeved on the fixed column through the groove and is in sliding connection with the fixed column, the sewing block 520 is provided with a second sliding groove 530, the sewing block 520 is provided with an arc-shaped needle 531, the arrangement of the second sliding groove 530 can further limit the swinging block 540 in the process of limiting the arc-shaped needle 531, the swinging block 540 is further utilized to drive the arc-shaped needle 531 to slide in the second sliding groove 530, so as to realize the sewing operation of the arc-shaped needle 531, and the sewing block 520 is in sliding connection through the second sliding groove 530, the traction rope 211 penetrates through the second limiting block 410 and is fixedly sleeved on the rotating block 510, the rotating block 510 is rotatably connected with the second limiting block 410 through a torsion spring, the sewing block 520 is sleeved on the rotating block 510, the sewing block 520 is not contacted with the inner side wall of the rotating block 510, a connecting rod 541 is fixedly connected to the rotating block 510, the swinging block 540 is rotatably connected with the rotating block 510 through the connecting rod 541, a clamping block 542 is fixedly connected to one side of the swinging block 540, which is far away from the rotating block 510, the stability of the arc needle in the sewing process can be further improved due to the arrangement of the clamping block 542, the clamping block 542 is fixedly sleeved on the arc needle 531, a first sliding groove 411 is formed in the second limiting block 410, a sliding block 412 is slidably connected to the first sliding groove 411, a clamping block 550 is fixedly connected to one side of the sewing block 520, which is close to the first sliding groove 411, and a sleeve block 600 is slidably sleeved on one side of the sewing block 520, which is far away from the second limiting block 410, the inside of the slider 412 is provided with a clamping groove 4121, the clamping block 550 is clamped with the slider 412 through the clamping groove 4121, the stability of the sewing assembly 500 and the second limiting block 410 can be further improved through the arrangement of the slider 412 and the clamping block 550, the shaking phenomenon of the sewing assembly 500 in the sewing process is further reduced, a lining 413 is nested in the clamping groove 4121, the stability of the sewing assembly 500 in the sewing process can be further improved through the arrangement of the lining 413, the lining 413 is made of a rubber composite material, the rubber composite material is made of a rubber base which is made of a rubber base body added with polyethylene fibers, the rubber base is natural rubber, the hardness of particles is higher than that of a rubber base material, the actual contact area is relatively small due to the bearing effect of the particles, the rolling friction effect is achieved, and therefore, the friction coefficient of the rubber material can be effectively improved due to the addition of the particles, thereby can further promote the stability between joint piece 550 and the joint groove 4121, reduce the seam piece 520 and appear rocking drawback easily.

The preparation method of the rubber composite material comprises the following specific steps:

s1: firstly, placing the polyethylene fiber into a chromic acid solution to be soaked for 5min, removing stains on the surface of the polyethylene fiber to obtain pure polyethylene fiber, adding dibenzoyl peroxide diluted to 20% into the treated polyethylene fiber, and promoting the formation of polyethylene crosslinking by utilizing the characteristic that dibenzoyl peroxide is slightly soluble and water after the polyethylene fiber reacts with the dibenzoyl peroxide of 20% for 30min, thereby improving the physical characteristic of polyethylene;

s2: the natural glue is squeezed into gaps of the polyethylene fibers by utilizing the shearing force and the pressure of the linear velocity ratio of the calender roller, so that the fibers are uniformly dispersed, the natural glue can be filled in gaps of the polyethylene fibers by the frictioning, the polyethylene fibers and the natural glue have higher structural strength and flexibility, and the mixing uniformity of the natural glue and the polyethylene fibers can be further improved;

s3: and vulcanizing, namely forming a three-dimensional space network structure by virtue of chemical crosslinking of linear macromolecular chains in the rubber composite material through vulcanization, and treating the mixture of the polyethylene fibers and the natural rubber subjected to rubber wiping at the curing temperature of 157 ℃ to obtain particles which are partially melted in the rubber matrix, so that the creep resistance of the rubber composite material can be further improved while the interface adhesion degree between the rubber matrix and the particles is enhanced, and the preparation of the required rubber composite material is completed.

Note that, the term "grandchild" is used. The research on the interface characteristics of the natural rubber composite material filled with the ultra-high molecular weight polyethylene short fibers [ D ]. Beijing university of chemical industry, 2012, shows that when the vulcanization temperature reaches more than 150 ℃, the ultra-high molecular weight polyethylene particles are partially melted in the rubber matrix, so that the interface bonding strength between the rubber matrix and the plastic particles is enhanced, after crosslinking and frictioning, the rubber composite material subjected to frictioning is subjected to vulcanization tests at 150 ℃ and 160 ℃, and a friction coefficient tester is used for obtaining the composite material of which the friction coefficient is lower than 150 ℃ after the composite material is vulcanized at 160 ℃, so that the temperature between 150 ℃ and 160 ℃ is tested again, and the test results are as follows:

TABLE 1 coefficient of friction of composite materials at different temperatures

Tests show that the friction coefficient is unchanged when the vulcanization temperature is 150-157 ℃, and the particles start to be completely melted in the natural rubber along with the increase of the temperature between 158-160 ℃, so that the friction coefficient is reduced, therefore, the temperature between 150-157 ℃ is selected for vulcanization, and in the tests, the higher the temperature is, the less time is required for vulcanization, so that when the vulcanization temperature is controlled to be 157 ℃, the excellent physical properties of the composite rubber material can be obtained, meanwhile, the synthesis efficiency of the composite rubber material can be effectively improved, the economic significance is realized in the actual preparation process of the composite rubber material, meanwhile, an electron microscope image of polyethylene fibers at different temperatures is observed by using an electron microscope, wherein when the temperature is 150-157 ℃, the polyethylene fibers are shown in figure 8, and when the temperature is 158-160 ℃, the polyethylene fibers are shown in figure 8, as can be seen from fig. 8 and 9 in combination with table 1, at 158 ℃ to 160 ℃, the high temperature breaks the continuity of the polyethylene fibers, resulting in a decrease in the abrasion resistance properties of the polyethylene fibers to the composite.

The working principle of the invention is as follows:

when the minimally invasive suturing device is used for minimally invasive suturing, firstly, the first limiting block 400 is controlled to rotate through the control assembly 200, so that the suturing block 520 is installed on the rotating block 510 on the second limiting block 410, the swinging block 540 is sleeved on the connecting rod 541 fixedly connected with the rotating block 510, then the sliding block 412 is controlled to slide through the control assembly 200, the sliding block 412 after sliding is clamped on the clamping block 550 on the suturing block 520, the suturing block 520 is further stabilized through clamping of the clamping block 550 and the clamping groove 4121 in the sliding block 412, so that the installation operation of the suturing block 520 is realized, the replacement of the replaceable suturing assembly 500 is facilitated, after the clamping operation is completed, the clamping block 550 is in contact with the lining 413, the lining 413 is made of rubber composite material consisting of polyethylene fibers and natural rubber, and the rubber composite material is made through the operations of crosslinking, rubber wiping and vulcanizing, in the cross-linking process, impurities in the polyethylene fiber are dissolved by chromic acid, so that the interference caused by mixing of the polyethylene fiber and natural rubber of the impurities can be effectively prevented, the impurities in the polyethylene fiber are dissolved and then are put into dibenzoyl peroxide with the concentration of 20% to react for 30min, the formation of polyethylene cross-linking is promoted by utilizing the characteristic that dibenzoyl oxide is slightly soluble and water, so that the physical property of the polyethylene fiber can be further improved, the mixing of the polyethylene fiber and the natural rubber is facilitated, the physical property of the mixed rubber composite material is improved, the problem that the physical property of the traditional single rubber is unstable is solved, the natural rubber is extruded into gaps of the polyethylene fiber by utilizing the shearing force and the pressure of a calender roller linear velocity ratio in the rubber wiping process, the uniform dispersion of the fibers is promoted, and the natural rubber can be filled into the gaps of the polyethylene fiber, therefore, the mixing sufficiency of the polyethylene fibers and the natural rubber can be effectively improved, the distribution uniformity of the physical property degree of the prepared rubber composite material is further improved, when the vulcanization temperature is controlled to be 157 degrees, the superior physical property of the composite rubber material is obtained, the synthesis efficiency of the composite rubber material can be effectively improved, and the preparation method has certain economic significance in the actual preparation process of the composite rubber material.

After clamping, the first limiting block 400 is controlled to rotate upwards by the control assembly 200, the first limiting block 400 after rotating limits the suturing assembly 500, the sleeve block 600 is sleeved on the left side of the suturing block 520 to limit the arc-shaped needle 531, when minimally invasive surgery suturing is carried out, the control assembly 200 controls the adjusting block 300 to rotate, the adjusting block 300 imitates arm rotation, so that the suturing device can conveniently extend into the abdomen, the rotating shaft 420 can be further controlled to rotate by the control assembly 200, and the second limiting block 410 is fixedly connected with the rotating shaft 420, so that the rotation of the rotating shaft 420 can further drive the second limiting block 410 to rotate, further drive the suturing assembly 500 clamped between the first limiting block 400 and the second limiting block 410 to rotate, thereby realizing the adjustment of the suturing assembly 500, facilitating the flexible rotation of the suturing assembly 500, and further utilizing the suturing assembly 500 capable of rotating at each angle to carry out suturing operation, after the suturing assembly 500 is inserted into the abdomen, the doctor uses the hand to pinch the extrusion piece 210, because the extrusion piece 210 is rotatably connected with the control assembly 200, and the traction rope 211 is fixedly sleeved on the rotating block 510, the pinching extrusion piece 210 can pull the traction rope 211 to further drive the rotating block 510 to rotate, when the hand does not extrude the extrusion piece 210, the rotating block 510 returns to the original position under the action of the torsion spring, it should be noted that, in the initial state, the arc needle 531 is contracted inside the second sliding chute 530, because the swinging block 540 is rotatably connected with the rotating block 510 through the connecting rod 541, and the swinging block 540 is limited through the fixed column, therefore, the rotation of the rotating block 510 can further drive the swinging block 540 to reciprocate along the second sliding chute 530, so as to push the arc needle 531 clamped by the swinging block 540 through the clamping block 542, the arc needle 531 slides along the second sliding chute 530 under the push of the swinging block 540, thereby realizing the sewing operation of the sewing device.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims

1. The minimally invasive suturing device for the laparoscopic surgery comprises a suturing assembly (500) and a second limiting block (410), wherein the suturing assembly (500) comprises a suturing block (520), and is characterized in that a first sliding groove (411) is formed in the second limiting block (410), a sliding block (412) is connected in the first sliding groove (411) in a sliding mode, a clamping block (550) is fixedly connected to one side, close to the first sliding groove (411), of the suturing block (520), a clamping groove (4121) is formed in the sliding block (412), the clamping block (550) is clamped with the sliding block (412) through the clamping groove (4121), a lining (413) is nested in the clamping groove (4121), and the lining (413) is made of a rubber composite material;

the sewing assembly (500) further comprises a swinging block (540), the swinging block (540) rotates on the sewing block (520), a fixed column is arranged on the sewing block (520), a groove is formed in the right side of the swinging block (540), the swinging block (540) is sleeved on the fixed column through the groove and is in sliding connection with the fixed column, a second sliding groove (530) is formed in the sewing block (520), an arc-shaped needle (531) is mounted on the sewing block (520), the arc-shaped needle (531) is in sliding connection with the sewing block (520) through the second sliding groove (530), and the rotating block (510) is rotatably connected to the bottom end of the second limiting block (410);

the fixing rod (100) is fixedly connected with the control assembly (200), the lower end of the control assembly (200) is rotatably connected with an extrusion part (210), the end part, close to the control assembly (200), of the extrusion part (210) is fixedly connected with a traction rope (211), the traction rope (211) extends into the control assembly (200) and is in sliding connection with the control assembly (200), and the traction rope (211) penetrates through a second limiting block (410) and is fixedly sleeved on a rotating block (510);

the rotating block (510) is rotatably connected with the second limiting block (410) through a torsion spring, the sewing block (520) is sleeved on the rotating block (510), the sewing block (520) is not in contact with the inner side wall of the rotating block (510), a connecting rod (541) is fixedly connected to the rotating block (510), the swinging block (540) is rotatably connected with the rotating block (510) through the connecting rod (541), a clamping block (542) is fixedly connected to one side, far away from the rotating block (510), of the swinging block (540), and the clamping block (542) is fixedly sleeved on the arc-shaped needle (531);

the rotating block (510) is rotatably connected with the second limiting block (410) through a torsion spring;

install dwang (401) on second stopper (410), second stopper (410) rotates through dwang (401) and is connected with first stopper (400), it inserts in first stopper (400) and second stopper (410) to sew up subassembly (500).

2. The minimally invasive suturing device for laparoscopic surgery as claimed in claim 1, wherein the rubber composite material is mainly rubber-based, the polyethylene fiber is added to the rubber-based, and the rubber-based is made by cross-linking, frictioning and vulcanization, and the rubber-based is natural rubber, and during the vulcanization operation, the microparticles obtained by the treatment with the curing temperature of 157 ℃ are partially melted in the rubber matrix.