CN209808437U - Minimally invasive fascia stitching instrument - Google Patents

Abstract

The utility model provides a minimally invasive fascia suture device, which comprises a minimally invasive fascia suture device body and a suture needle, wherein the lower part of the device body is provided with a movable wing plate, the movable wing plate is provided with a fixed block and a cushion table, the outer side of the middle part of the device body is sleeved with a positioner, and the needle head of the suture needle can be taken off; by adopting the minimally invasive fascia suture device with the structure, the positioner can better fix the whole device body on the body of a patient for convenient operation, the fixed block and the hard blocking piece on the silica gel film at the bottom of the cushion table ensure that the suture needle cannot penetrate out to hurt blood vessels and internal organs in the body in the operation, meanwhile, the existence of the fixed block prevents the suture needle from being drawn out together when the suture needle is drawn out, the space formed by the cavity and the silica gel film can wrap the detachable needle head, the whole device is safer to use, and the minimally invasive fascia suture device is suitable for tissue approximation and percutaneous incision closure in the minimally invasive endoscopic surgery.

Description

Minimally invasive fascia stitching instrument

Technical Field

The utility model relates to a surgical operation apparatus field, concretely relates to ware is sewed up to wicresoft's manadesma.

Background

In the current clinical endoscopic surgery, if the peritoneum and the fascia layer are not sutured, the possibility of incomplete intestinal obstruction caused by the hernia of omentum or intestinal canal in the abdominal cavity or local adhesion is easily formed, the problems of puncture hole bleeding, puncture hole hernia and the like are often caused, and the pain of a patient is increased due to the occurrence of complications. In response to this problem, the inventor filed a prior application in 2016, application No. 201620970368.5, entitled utility model of a wire knot pusher, to overcome the above problems, in the using process, the inventor further discovers that in the existing suture process, after the suture line is inserted into the abdominal cavity by the suture needle, if the abdominal cavity wall tightness of the patient is higher than the clamping force of the silica gel sheet in the movable wing plate of the suturing device, the suturing thread is easy to withdraw when withdrawing the suturing needle, so that the subsequent suturing can not be completed, and the additional pain is brought to the patient, meanwhile, because patients have different weight and different abdominal wall thicknesses, the insertion depth of the suturing device has a safe and proper range to realize subcutaneous suturing with the best effect, and the suturing device needs to be properly fixed during operation, otherwise the suturing device is easy to move up and down during operation, and the operation effect of a patient is affected.

Therefore, how to overcome the problem becomes a problem which needs to be solved by the inventor.

Disclosure of Invention

The utility model provides a minimally invasive fascia suture device aiming at the defects of the prior art, which comprises a minimally invasive fascia suture device body and a suture needle, wherein the lower part of the device body is provided with a movable wing plate, the movable wing plate is provided with a fixed block and a cushion table, the outer side of the middle part of the device body is sleeved with a positioner, and the needle head of the suture needle can be taken off; by adopting the minimally invasive fascia suture device with the structure, the positioner can better fix the whole device body on the body of a patient for convenient operation, the fixed block and the hard blocking piece on the silica gel film at the bottom of the cushion table ensure that the suture needle cannot penetrate out to hurt blood vessels and internal organs in the body in the operation, meanwhile, the existence of the fixed block prevents the suture needle from being drawn out together when the suture needle is drawn out, the space formed by the cavity and the silica gel film can wrap the detachable needle head, the whole device is safer to use, and the minimally invasive fascia suture device is suitable for tissue approximation and percutaneous incision closure in the minimally invasive endoscopic surgery.

It should be noted that the body structure of the present invention is similar to the basic structure of the utility model named as a wire knot pusher, which is applied for application No. 201620970368.5, so the inventor does not make much description on the specific structure therein, and the skilled in the art can refer to the technical solution of the prior application to facilitate the understanding of the technical solution of the present application; the main invention of the utility model is that the movable wing plate is arranged below the body, and the positioner and the suture needle with the detachable needle head are sleeved outside the middle part of the body, so the inventor focuses on the description of the structure.

The utility model discloses a concrete technical scheme is:

a minimally invasive fascia suture device comprises a minimally invasive fascia suture device body and a suture needle, wherein a movable wing plate is arranged at the lower part of the device body, a fixed block and a cushion table are arranged on the movable wing plate, a positioner is sleeved on the outer side of the middle part of the device body, and the needle head of the suture needle can be taken off;

the front end of the movable wing plate is provided with a fixed block, a wire blocking block is arranged in the fixed block, a cushion table is connected below the fixed block, a cavity is formed in the cushion table, the bottom of the cushion table is provided with a silica gel film, and a hard blocking piece is arranged on the silica gel film; the wire blocking block is made of a silica gel material;

the hard retaining sheet can be made of hard plastic or hard silica gel, and the condition that the suture needle cannot penetrate is taken as the criterion;

the sewing needle consists of a needle handle and a needle head, the needle handle comprises a front needle handle and a rear needle handle, the front end of the front needle handle is connected with an outer needle sleeve, the center of the rear needle handle is connected with a needle rod, the needle rod can be inserted into the outer needle sleeve, and the rear end of the front needle handle and the front end of the rear needle handle are provided with inserting structures which are matched with each other; the front end of the needle rod is connected with a snap ring, the needle head is provided with a through hole matched with the snap ring, and the needle head is fixedly connected with the needle rod through the through hole; the outer diameter of the needle head is the same as that of the outer needle sleeve;

the positioner consists of an outer sleeve and an inner sleeve, wherein the outer sleeve comprises an outer tube body and finger-holding plates symmetrically arranged on two sides of the outer tube body, an opening is arranged on the side surface of the outer tube body, the lower part of the outer tube body is connected with a transition sleeve, the outer wall of the transition sleeve is arc-shaped, and the outer diameter of the transition sleeve gradually decreases from top to bottom;

the inner sleeve comprises an inner tube body and arc-shaped clamping strips arranged in the inner tube body, wherein lugs are symmetrically arranged above the inner wall of the inner tube body, a window is arranged on the tube wall on one side of the inner tube body and corresponds to the opening position on the outer tube body, an installation groove is arranged on the inner side of the tube wall on the opposite side of the window, and a clamping leg II is arranged on the outer side of the inner tube body on one side of the window;

one end of the arc-shaped clamping strip is provided with an installation block, and the outer side of the other end of the clamping strip is connected with a clamping leg I; the width of the clamping strip is smaller than the height of the window, and the clamping legs I on the clamping strip penetrate through the window and are positioned on the outer side of the inner pipe body; the arc-shaped clamping strip is clamped in the mounting groove through the mounting block;

the inner side of the pipe wall of the inner pipe body is provided with a bulge II, the arc-shaped clamping strip is provided with a bulge I, the bulge II and the bulge I are symmetrically arranged in the circumferential direction, and the bulge can be made of soft materials;

the outer side of the top of the inner pipe body is fixedly connected with the inner side of the top of the outer pipe body; the welding mode or the bonding mode can be adopted for realizing the welding; the clamping leg II, the clamping leg I and the press switch are positioned at the opening on the side surface of the outer pipe body;

through holes are formed in the outer side of the inner pipe body and the clamping legs II and I on the arc-shaped clamping strips, a press switch is connected through the through holes in a shaft mode, a clamping table with gradually-increased width is arranged below a rotating shaft of the press switch, and the width behind the clamping table is constant;

the outer wall of the device body is provided with a sliding chute parallel to the stitching needle channel in the device body, the size of the sliding chute is matched with the convex block on the inner wall of the inner sleeve body, the convex block is positioned in the sliding chute during installation, and the whole positioner is sleeved above the outer side transition section of the device body through the structure;

the minimally invasive fascia suture device adopting the structure is additionally provided with the positioner on the outer side of the middle part of the device body, and in order to adapt to the positioner, the outer side of the device body is also provided with the chute parallel to the suture needle channel, so that the movement of the whole positioner in the vertical direction can be realized by utilizing the matching of the convex block on the inner wall of the inner sleeve body and the chute, and the chute is parallel to the suture needle channel, therefore, the suture channel can not be influenced in the vertical movement process;

because the lower part of the outer tube body is connected with the transition sleeve, the outer wall of the transition sleeve is arc-shaped, and the outer diameter of the transition sleeve is gradually reduced from top to bottom, the vertical height of the positioner can be adjusted to enable the transition sleeve to be embedded into the patient when the whole positioner is placed at the minimally invasive opening position, and because the arc-shaped outer wall and the outer diameter of the transition sleeve are gradually reduced from top to bottom, the transition sleeve can be better matched with the minimally invasive opening of the patient, the purpose of preliminarily fixing the whole minimally invasive fascia suture instrument is achieved, and in order to achieve better fixing effect and ensure that the whole minimally invasive fascia suture instrument is not displaced when a doctor punctures with a suture needle, the inventor specially designs the inner sleeve structure, adopts the structure, when a press switch is opened, a clamping platform below the switch moves forwards, and is gradually embedded between clamping legs at the outer side of the inner tube body and, the distance between the two clamping legs is increased, and the clamping legs on the outer side of the inner pipe body are fixed, so the clamping legs on the clamping strip drive the clamping strip to move towards the direction far away from the clamping legs on the outer side of the inner pipe body, because the other end of the clamping strip is fixed in the mounting groove, the whole clamping strip is driven by the clamping legs, the diameter of the inner pipe body in the horizontal direction is reduced, so that the contraction of the clamping strip is realized, and because the inner side of the pipe wall of the inner pipe body and the arc-shaped clamping strip are symmetrically provided with the bulges, in the contraction process of the clamping strip, the bulges can press the outer wall of the device body tightly, thereby realizing the fixation of the device body, because the width behind the clamping table is constant, when the push switch is completely closed, the part with constant width of the clamping table is positioned between the clamping legs, the clamping legs at two sides hold the clamping legs, therefore, the fixation of the whole positioner to the device body in the using process of the minimally invasive fascia suture device can be kept, and the accuracy of the puncture of the suture needle is ensured; after the operation process is completed, the press switch is turned on, the clamping strip returns under the elastic action of the clamping strip, the fixing of the device body is released, and meanwhile, the positioner is slightly rotated to ascend, so that the whole positioner can be moved out of the minimally invasive opening of the patient, the whole minimally invasive fascia suture device is pulled out of the minimally invasive opening, and the suture line is taken out along with the positioner;

the puncture process of the suture line in the process is the same as the process recorded in the utility model of the prior application with the name of 201620970368.5, namely the knot pusher, and the inventor does not need to describe the process again;

different from the prior application, the utility model adopts the design of the detachable needle head, as mentioned above, the suture needle consists of a needle handle and a needle head, the needle handle comprises a front needle handle and a rear needle handle, the front end of the front needle handle is connected with an outer needle sleeve, the center of the rear needle handle is connected with a needle rod, the needle rod can be inserted into the outer needle sleeve, and the rear end of the front needle handle and the front end of the rear needle handle are provided with inserting structures which are matched with each other; the front end of the needle rod is connected with a snap ring, the needle head is provided with a through hole matched with the snap ring, and the needle head is fixedly connected with the needle rod through the through hole; the outer diameter of the needle head is the same as that of the outer needle sleeve;

in addition, the outer needle sleeve can be made of a non-magnetic material, and the needle head and the needle rod are made of a magnetic material, so that the needle head and the needle rod can be adsorbed together under the magnetic action of the needle head and the needle rod, and the needle can be conveniently separated when withdrawn;

therefore, when in use, the needle rod is firstly inserted into the outer needle sleeve, the front needle handle and the rear needle handle are butted through the inserting structure, the length of the outer needle sleeve is smaller than the length of the needle rod positioned at the outer side of the rear needle handle, so that the front end of the needle handle can penetrate out of the outer needle sleeve, the snap ring also penetrates out of the outer needle sleeve at the moment, the needle rod of the snap ring part is inserted into the through hole on the needle head to connect the needle head and the needle rod together, the inserting distance is generally controlled to be just right when the needle head is in sealing butt joint with the outer needle sleeve, and the outer diameter of the needle head is the same as the outer diameter of the outer needle sleeve, so that the needle head and the outer needle sleeve form a whole, the needle head can conveniently penetrate through a suture needle channel on the fascia suture device, the operation of the suture is more convenient, the; after the puncture is finished, when the needle needs to be withdrawn, the rear needle handle is held and pulled out, the outer diameter of the needle head is the same as that of the outer needle sleeve, the outer needle sleeve blocks the needle head, the snap ring on the needle rod is withdrawn from the through hole of the needle head together with the rear needle handle, and then only the front needle handle needs to be held and withdrawn, so that the needle head can be carried with a suture line and kept in a movable wing plate of the minimally invasive fascia suture instrument; by adopting the structure, the needle can be simply removed without other tools, thereby being convenient for medical staff to use;

just because the detachable needle head is adopted, the corresponding movable wing plate must be redesigned, and the needle head cannot enter the body of a patient after being detached must be ensured, so the inventor redesigns a cushion table structure of the movable wing plate, a cavity is arranged in the cushion table, a silicon film is arranged at the bottom, and a hard baffle is arranged on the silicon film, the structure replaces the elastic strip and the elastic body in the prior application, the upper part of the cushion table is sealed by a thread baffle block, the bottom of the cushion table is sealed by the silicon film and the hard baffle, so the cavity in the cushion table is completely sealed, when the suture needle is inserted, the hard baffle supports against the needle head and cannot penetrate into the human body, the ductility of the silicon film can enable the needle head to move downwards along with the suture needle and deform, but the needle head cannot fall off to keep the sealing of the cavity, so when the needle withdrawing operation is carried out, the needle head carries the suture thread to be left in the cavity, the needle head carries the suture line and is taken out together with the whole device body after the movable wing plates are combined, so that the puncture and the fixation of the suture line are completed, the needle head is completely positioned in the cavity in the whole process, the blood vessel and the internal organs in the body are ensured not to be touched, and the secondary damage to the human body is avoided;

in order to ensure that the needle head falls off, the inventor arranges a cylindrical thread blocking table in the middle of the thread blocking block, and can apply larger friction force to the needle head when withdrawing the needle, thereby facilitating the separation of the outer needle sleeve and the needle head;

the technical scheme of the prior application can be referred between the pad table and the fixed block in the movable wing plate, and the solder is heated by adopting the technology of ultrasonic heating and the like in a solder mode, so that the fixed block and the pad table are fixedly welded together; because the utility model discloses a device is disposable, need not consider the later stage and gets rid of syringe needle scheduling problem from the activity pterygoid lamina, the inventor is no longer repeated this.

In conclusion, the minimally invasive fascia suture device with the structure has the advantages that the whole device body can be better fixed on the body of a patient through the positioner, the fixation block and the hard blocking piece on the silica gel film at the bottom of the cushion table ensure that the suture needle cannot penetrate out to hurt the blood vessel and the internal organs in the body during the operation, meanwhile, the fixation block prevents the suture needle from being drawn out together when the suture needle is drawn out, the space formed by the cavity and the silica gel film can wrap the detachable needle head, the whole device is safer to use, and the minimally invasive fascia suture device is suitable for tissue approximation and percutaneous incision closure in the minimally invasive endoscopic surgery.

Drawings

Fig. 1 is a schematic structural view of the minimally invasive fascia suture instrument of the present invention;

fig. 2 is a schematic structural view of the minimally invasive fascia suture apparatus according to the present invention in a use state;

FIG. 3 is a perspective view of the superstructure of the minimally invasive fascia stapler of FIG. 2;

FIG. 4 is an enlarged view taken at A in FIG. 3;

FIG. 5 is a schematic view of the suture needle according to the present invention;

FIG. 6 is a cross-sectional view of the suture needle of the present invention;

FIG. 7 is a cross-sectional view of the front needle shaft and outer needle sheath of the suturing needle;

FIG. 8 is a schematic view of the construction of the needle shaft and needle head after the suturing needle;

FIG. 9 is a schematic view of the construction of the front needle shaft of the suture needle;

FIG. 10 is a schematic view of the construction of the rear needle shaft of the suturing needle;

FIG. 11 is an enlarged view of the front end of the needle shaft;

FIG. 12 is a schematic structural view of a lower end transition section and a movable wing plate of the minimally invasive fascia suture device in use;

fig. 13 is a schematic structural view of the thread stop block of the present invention;

FIG. 14 is a schematic view of the movable wing plate of the present invention shown without a suture needle inserted;

FIG. 15 is a schematic view of the movable wing plate of the present invention inserted into the suture needle;

FIG. 16 is a schematic view of the internal structure of the movable wing plate when the needle is inserted;

fig. 17 is a schematic structural view of the positioner of the present invention;

fig. 18 is a schematic structural view of the outer sleeve according to the present invention;

fig. 19 is a front view of the outer sleeve of the present invention;

fig. 20 is a schematic structural view of the inner sleeve according to the present invention;

fig. 21 is a schematic structural view of the inner tube according to the present invention;

fig. 22 is a schematic structural view of the arc-shaped clamping strip of the present invention;

fig. 23 is a schematic structural view of the push switch of the present invention;

FIG. 24 is a side view of a portion of a chuck with a gradually increasing width;

in the figure, 1 is a device body, 1-1 is a chute, and 2 is a transition section;

3 is a suture needle, 3-1 is a rear needle handle, 3-2 is a front needle handle, 3-3 is an outer needle sleeve, and 3-4 is a needle head. 3-5 is a needle bar, and 3-6 is a snap ring;

4 is a positioner, 5 is an outer sleeve, 5-1 is an outer tube body, 5-2 is a finger grip plate, and 5-3 is a transition sleeve;

6 is an inner sleeve, 7 is a movable wing plate,

7-3 is a stop line block, 7-4 is a fixed block, 7-6 is a cushion table, 7-9 is a silica gel film, and 7-1 is a hard stop sheet;

8 is an arc-shaped clamping strip, 8-1 is a bulge I, 10-3 is a bulge II, 8-2 is a clamping leg I, 10-2 is a clamping leg II, and 8-3 is an installation block;

9 is a press switch, 9-1 is a rotating shaft, and 9-2 is a clamping table;

10 is an inner tube body, 10-1 is a convex block, and 10-4 is an installation groove.

Detailed Description

A minimally invasive fascia suture device comprises a minimally invasive fascia suture device body 1 and a suture needle 3, wherein the lower part of the device body 1 is connected with a movable wing plate 7 through a transition section 2, the movable wing plate 7 is provided with a fixed block 7-4 and a cushion table 7-6, the outer side of the middle part of the device body 1 is sleeved with a positioner 4, and the needle head of the suture needle 3 can be taken off;

the front end of the movable wing plate 7 is provided with a fixed block 7-4, a line blocking block 7-3 is arranged in the fixed block 7-4, a cushion table 7-6 is connected below the fixed block 7-4, a cavity is arranged in the cushion table 7-6, the bottom of the cushion table 7-6 is provided with a silica gel film 7-9, and a hard blocking piece 7-1 is arranged on the silica gel film 7-9; the wire blocking block 7-3 is made of a silica gel material;

the hard baffle 7-1 can be made of hard plastic or hard silica gel, and the condition that a suture needle cannot penetrate is taken as the criterion;

the sewing needle 3 consists of a needle handle and a needle head 3-4, the needle handle comprises a front needle handle 3-2 and a rear needle handle 3-1, the front end of the front needle handle 3-2 is connected with an outer needle sleeve 3-3, the center of the rear needle handle 3-1 is connected with a needle rod 3-5, the needle rod 3-5 can be inserted into the outer needle sleeve 3-3, and the rear end of the front needle handle 3-2 and the front end of the rear needle handle 3-1 are provided with inserting structures which are matched with each other; the front end of the needle rod 3-5 is connected with a snap ring 3-6, the needle head 3-4 is provided with a through hole matched with the snap ring 3-6, and the needle head 3-4 is fixedly connected with the needle rod 3-5 through the through hole; the outer diameter of the needle head 3-4 is the same as that of the outer needle sleeve 3-3;

the positioner 4 consists of an outer sleeve 5 and an inner sleeve 6, wherein the outer sleeve 5 comprises an outer tube body 5-1 and finger grip plates 5-2 symmetrically arranged at two sides of the outer tube body, an opening is arranged on the side surface of the outer tube body 5-1, the lower part of the outer tube body 5-1 is connected with a transition sleeve 5-3, the outer wall of the transition sleeve is arc-shaped, and the outer diameter of the transition sleeve gradually decreases from top to bottom;

the inner sleeve 6 comprises an inner tube body 10 and arc-shaped clamping strips 8 arranged in the inner tube body 10, wherein the upper part of the inner wall of the inner tube body 10 is symmetrically provided with lugs 10-1, the tube wall at one side of the inner tube body 10 is provided with a window, the window corresponds to the position of an opening on the outer tube body, the inner side of the tube wall at the opposite side of the window is provided with a mounting groove 10-4, and the outer side of the inner tube body 10 at one side of the window is provided with a clamping leg II 10-2;

one end of the arc-shaped clamping strip 8 is provided with an installation block 8-3, and the outer side of the other end of the clamping strip 8 is connected with a clamping leg I8-2; the width of the clamping strip 8 is smaller than the height of the window, and the clamping leg I8-2 on the clamping strip 8 passes through the window and is positioned on the outer side of the inner tube body 10; the arc-shaped clamping strip 8 is clamped in the mounting groove 10-4 through the mounting block 8-3;

the inner side of the pipe wall of the inner pipe body 10 is provided with a protrusion II10-3, the arc-shaped clamping strip 8 is provided with a protrusion I8-1, the protrusion II10-3 and the protrusion I8-1 are symmetrically arranged in the circumferential direction, and the protrusion can be made of soft materials;

the outer side of the top of the inner pipe body 10 is fixedly connected with the inner side of the top of the outer pipe body 5-1; the welding mode or the bonding mode can be adopted for realizing the welding; the clamping leg II10-2, the clamping leg I8-2 and the push switch 9 are positioned at the opening on the side surface of the outer tube body 5-1;

through holes are formed in the outer side of the inner tube body 10, and the clamping legs II10-2 and I8-2 on the arc-shaped clamping strip 8, the inner tube body is connected with a press switch 9 through the through holes in a shaft mode, a clamping table 9-2 with gradually-increased width is arranged below a rotating shaft 9-1 of the press switch 9, and the width behind the clamping table 9-2 is constant;

the outer wall of the device body 1 is provided with a chute 1-1 parallel to a suture needle channel in the device body, the size of the chute 1-1 is matched with a lug 10-1 on the inner wall of the inner sleeve 6, and the lug 10-1 is positioned in the chute 1-1 during installation; by the structure, the whole positioner is sleeved above the transition section at the outer side of the device body;

as in the prior application, the needle outlet hole on the device body is in the same straight line with the thread blocking block and the hard blocking piece on the silicon film, so that the insertion of the suture needle according to the specified sequence and position can be ensured, and the inventor does not need to describe any more.

Claims (5)

1. A minimally invasive fascia suture device comprises a minimally invasive fascia suture device body (1) and a suture needle (3), and is characterized in that: the lower part of the device body (1) is connected with a movable wing plate (7) through a transition section (2), the movable wing plate (7) is provided with a fixed block (7-4) and a cushion table (7-6), the outer side of the middle part of the device body (1) is sleeved with a positioner (4), and the needle head of the suture needle (3) is a detachable suture needle;

the front end of the movable wing plate (7) is provided with a fixing block (7-4), a line blocking block (7-3) is arranged in the fixing block (7-4), a cushion table (7-6) is connected below the fixing block (7-4), a cavity is arranged in the cushion table (7-6), the bottom of the cushion table is provided with a silica gel film (7-9), and a hard blocking piece (7-1) is arranged on the silica gel film (7-9).

2. The minimally invasive fascia stapler of claim 1, wherein:

the sewing needle (3) consists of a needle handle and a needle head (3-4), the needle handle comprises a front needle handle (3-2) and a rear needle handle (3-1), the front end of the front needle handle (3-2) is connected with an outer needle sleeve (3-3), the center of the rear needle handle (3-1) is connected with a needle rod (3-5), the needle rod (3-5) can be inserted into the outer needle sleeve (3-3), and the rear end of the front needle handle (3-2) and the front end of the rear needle handle (3-1) are provided with inserting structures which are matched with each other; the front end of the needle rod (3-5) is connected with a snap ring (3-6), the needle head (3-4) is provided with a through hole matched with the snap ring (3-6), and the needle head (3-4) is fixedly connected with the needle rod (3-5) through the through hole; the outer diameter of the needle head (3-4) is the same as that of the outer needle sleeve (3-3).

3. The minimally invasive fascia stapler of claim 1, wherein:

the positioner (4) consists of an outer sleeve (5) and an inner sleeve (6), wherein the outer sleeve (5) comprises an outer tube body (5-1) and finger grip plates (5-2) symmetrically arranged at two sides of the outer tube body, an opening is arranged on the side surface of the outer tube body (5-1), a transition sleeve (5-3) is connected to the lower part of the outer tube body (5-1), the outer wall of the transition sleeve is arc-shaped, and the outer diameter of the transition sleeve is gradually reduced from top to bottom;

the inner sleeve (6) comprises an inner tube (10) and arc-shaped clamping strips (8) arranged in the inner tube (10), wherein lugs (10-1) are symmetrically arranged above the inner wall of the inner tube (10), a window is arranged on the tube wall of one side of the inner tube (10), the window corresponds to an opening position on the outer tube, an installation groove (10-4) is arranged on the inner side of the tube wall opposite to the window, and clamping legs II (10-2) are arranged on the outer side of the inner tube (10) on one side of the window;

one end of the arc-shaped clamping strip (8) is provided with an installation block (8-3), and the outer side of the other end of the clamping strip (8) is connected with a clamping leg I (8-2); the width of the clamping strip (8) is smaller than the height of the window, and the clamping leg I (8-2) on the clamping strip (8) penetrates through the window and is positioned on the outer side of the inner pipe body (10); the arc-shaped clamping strip (8) is clamped in the mounting groove (10-4) through the mounting block (8-3);

through holes are formed in the outer side of the inner tube body (10), the clamping legs II (10-2) and the clamping legs I (8-2) on the arc-shaped clamping strips (8), a press switch (9) is connected through the through holes in a shaft mode, a clamping table (9-2) with gradually increased width is arranged below a rotating shaft (9-1) of the press switch (9), and the width of the rear portion of the clamping table (9-2) is constant;

the outer side of the top of the inner pipe body (10) is fixedly connected with the inner side of the top of the outer pipe body (5-1), and the clamping leg II (10-2), the clamping leg I (8-2) and the press switch (9) are all positioned at the opening on the side surface of the outer pipe body (5-1).

4. The minimally invasive fascia stapler of claim 3, wherein:

the inner side of the pipe wall of the inner pipe body (10) is provided with a protrusion II (10-3), the arc-shaped clamping strip (8) is provided with a protrusion I (8-1), and the protrusion II (10-3) and the protrusion I (8-1) are symmetrically arranged in the circumferential direction.

5. The minimally invasive fascia stapler of claim 1, wherein:

the outer wall of the device body (1) is provided with a sliding groove (1-1) parallel to a suture needle channel in the device body, the size of the sliding groove (1-1) is matched with a convex block (10-1) on the inner wall of the inner sleeve (6), and the convex block (10-1) is positioned in the sliding groove (1-1) during installation.