Puncture cannula structure for disposable laparoscope

Abstract

The utility model provides a disposable puncture cannula structure for a laparoscope. The disposable puncture cannula structure comprises a cannula, a cannula shell, an anchor nail and a suture line. The sleeve comprises a sleeve seat and a sleeve body; a fixing shaft is arranged on the outer wall of the sleeve seat in the radial direction. The fixing shaft is rotationally sleeved with a suture line quick detaching assembly used for separating the suture line from the sleeve. An anchor slot is axially formed in the inner wall of the bottom of the pipe body; the upper end of the suture line is bundled and folded on the suture line quick-release assembly; the lower end of the suture line penetrates through the bottom of the casing pipe shell to be connected to the anchor nail, the anchor nail is inserted into the anchor nail inserting groove, and the suture line is tensioned between the suture line quick detaching assembly and the anchor nail along the outer wall of the pipe body. The puncture awl has the advantages that when the anchor is arranged in the abdominal cavity through the puncture awl, the suture line can be conveniently separated from the suture line quick-release assembly after being pulled through rotation of the suture line quick-release assembly, so that the situation that muscular tissue of a patient is injured due to overlarge connection strength of the anchor is conveniently prevented, suture operation is conveniently carried out, and good healing of a wound is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, more particularly, relates to disposable laparoscope's puncture sleeve structure. BACKGROUND

[0002] After laparoscopic surgery needs to be sutured by fascia suture puncture ware sutured wound, the existing fascia suture puncture ware in the use process, suture thread is from the inside of puncture sleeve, thereby often when passing will appear suture thread in the winding or curling of puncture sleeve, thereby influence suture thread normal use, sometimes also can exist the suture thread in puncture sleeve interference puncture cone passes through, thereby influence the ejection of puncture cone, further influence the suture of wound and influence operation process. CONTENT OF UTILITY MODEL

[0003] The utility model solves the technical problem that the existing suture thread passes from the inside of puncture sleeve, influences the suture of wound, in order to overcome the defects of above prior art, the present application provides a kind of through the rotation of suture thread quick release assembly and make suture thread pull out and separate from suture thread quick release assembly, to facilitate preventing the muscle tissue of patient from being damaged by the excessive connection strength of anchor nail.

[0004] For the purpose of the utility model, the following technical solutions are adopted to realize it:

[0005] Disposable laparoscope's puncture sleeve structure, including sleeve, sleeve shell, anchor nail and suture thread, the sleeve includes the sleeve seat of upper and the pipe body of lower, the sleeve shell is installed on the sleeve seat, and is wrapped in, the top of sleeve shell is provided with the puncture hole that communicates with sleeve seat, characterized by, the outer wall of sleeve seat is provided with fixed shaft in radial direction, the suture thread quick release assembly is rotatably sleeved on the fixed shaft, the upper end of suture thread is detachably wound on suture thread quick release assembly, the lower end of suture thread passes through sleeve shell bottom and is connected to anchor nail along pipe body outer wall, the bottom inner wall of pipe body is provided with anchor nail insertion slot in axial direction, and anchor nail insertion slot extends to pipe body bottom end and forms anchor nail insertion port, the anchor nail is inserted in anchor nail insertion slot, in initial state, make suture thread tension connection between suture thread quick release assembly and anchor nail, in ejection state, anchor nail is ejected from anchor nail insertion slot by the action of puncture cone, and finally separates from suture thread quick release assembly along with the elongation of suture thread.This structure is cooperated between suture thread quick release assembly and anchor nail, when facilitating puncture cone to arrange anchor nail into abdominal cavity, through the rotation of suture thread quick release assembly and make suture thread pull out and separate from suture thread quick release assembly, to facilitate preventing the muscle tissue of patient from being damaged by the excessive connection strength of anchor nail, facilitate suture operation, guarantee the good healing of wound.

[0006] As preferred, the suture quick release assembly comprises a suture positioning sleeve, a torsion spring mounting sleeve and a ring-shaped torsion spring which are sequentially sleeved onto the fixing shaft from inside to outside; the suture positioning sleeve is rotationally sleeved on the fixing shaft, and a loop part for suture looping is arranged on the outer peripheral wall of the suture positioning sleeve; the torsion spring mounting sleeve is rotationally sleeved on the fixing shaft and is clamped with the suture positioning sleeve to realize synchronous rotation; the torsion spring mounting sleeve is internally provided with a torsion spring groove; the ring-shaped torsion spring is mounted in the torsion spring groove, and the outer end of the ring-shaped torsion spring is connected with the groove wall of the torsion spring groove, and the inner end of the ring-shaped torsion spring is connected with the fixing shaft, and the ring-shaped torsion spring forms a tendency opposite to the movement direction of the torsion spring mounting sleeve and the suture. The loop part on the suture positioning sleeve facilitates the looping and positioning of the suture, the synchronous connection of the torsion spring mounting sleeve and the suture positioning sleeve is facilitated, and the ring-shaped torsion spring is facilitated, so as to ensure that the suture can be tensioned and fixed, and the suture can be easily separated from the suture positioning sleeve by the puncture cone.

[0007] As preferred, the loop part comprises a positioning ring groove, a first positioning groove and a second positioning groove; the positioning ring groove is circumferentially arranged on the outer peripheral wall of the suture positioning sleeve; the first positioning groove and the second positioning groove are circumferentially and spacedly arranged on the outer peripheral wall of the suture positioning sleeve, the first positioning groove and the second positioning groove are located on one side of the positioning ring groove, and the first positioning groove and the second positioning groove are in communication with the positioning ring groove, and a wire pin for loop positioning is formed between the first positioning groove and the second positioning groove. The positioning ring groove facilitates the looping and positioning of the suture, and the first positioning groove and the second positioning groove facilitate the quick separation of the suture positioning sleeve from the suture when the suture positioning sleeve is rotated to the bottom, thereby improving the operation convenience.

[0008] As preferred, a spline groove is arranged on the side wall of the suture positioning sleeve close to the torsion spring mounting sleeve; a spline plug is arranged on the side wall of the torsion spring mounting sleeve close to the suture positioning sleeve; the spline plug and the spline groove are inserted and matched to realize the synchronous rotation of the suture positioning sleeve and the torsion spring mounting sleeve. The positioning and matching between the spline groove and the spline plug facilitate the connection between the suture positioning sleeve and the torsion spring mounting sleeve, and also facilitate the synchronous rotation.

[0009] As preferred, the torsion spring slot is arranged on the side wall of the torsion spring mounting sleeve away from the suture positioning sleeve, and the torsion spring slot is arranged radially recessed; the side wall of the torsion spring mounting sleeve away from the suture positioning sleeve is further provided with a torsion spring positioning slot, and the torsion spring positioning slot is arranged radially recessed; the torsion spring positioning slot and the torsion spring slot are provided with a communication port; the outer end of the annular torsion spring is bent outward, and the outer end of the annular torsion spring is inserted into the torsion spring positioning slot; the middle part of the fixed shaft is provided with a radially recessed torsion spring limiting slot; the inner end of the annular torsion spring is horizontally inserted into the torsion spring limiting slot. The outer end of the annular torsion spring is positioned and limited by the torsion spring positioning slot, and the inner end of the annular torsion spring is positioned and limited by the torsion spring limiting slot; the annular torsion spring is prevented from falling or moving, and the two ends of the annular torsion spring are limited during the rotation of the torsion spring mounting sleeve, so that the annular torsion spring plays a reverse force during rotation.

[0010] As preferred, the suture quick release assembly further comprises a torsion spring plug; the torsion spring plug is rotatably arranged on the fixed shaft, and the torsion spring plug is inserted into the torsion spring slot, and the annular torsion spring is limited between the torsion spring plug and the torsion spring mounting sleeve. The torsion spring plug can better limit the annular torsion spring, prevent the annular torsion spring from falling out of the torsion spring slot, and ensure that the annular torsion spring plays a stable reverse force.

[0011] As preferred, two vertically spaced suture through holes are arranged on the anchor, and the two suture through holes are arranged radially through; a vertical positioning slot for communicating the two suture through holes is arranged on the side wall of the anchor near the tube body, and the lower end of the vertical positioning slot extends to the bottom end of the tube body to form a suture through port. The two suture through holes facilitate the fixation of the suture, and the vertical positioning slot provides installation space for the suture through hole to prevent interference with the anchor and the tube body.

[0012] As preferred, a puncture cavity for communicating the tube body and the puncture hole is arranged in the sleeve seat; a sealing assembly is installed in the puncture cavity; the sealing assembly comprises a one-way sealing valve, a fixed sleeve and a semispherical sealing ring arranged in sequence from bottom to top; the one-way sealing valve is installed in the puncture cavity, the fixed sleeve is installed on the top of the sleeve seat, and the one-way sealing valve is limited in the puncture cavity; the semispherical sealing ring is installed on the fixed sleeve, and the bottom center of the semispherical sealing ring extends into the fixed sleeve. The one-way sealing valve and the semispherical sealing ring play a one-way sealing role, facilitating the communication when the puncture cone is inserted, and closing in the opposite direction.

[0013] As preferred, the sleeve shell comprises an upper shell and a lower shell; the lower shell is provided with a mounting groove for mounting the sleeve seat; the groove bottom of the mounting groove is provided with a through hole for the tube body to pass through; the tube body passes through the through hole and the sleeve seat is mounted in the mounting groove; the lower shell is further provided with a quick release limiting groove in communication with the mounting groove, and the quick release limiting groove is used for limiting and positioning the suture quick release assembly; the upper shell is mounted on the lower shell and wraps the sleeve seat; the upper shell is provided with a puncture cone bayonet for cooperating with the puncture cone. Through the mounting mode of the upper shell and the lower shell, disassembly and assembly are facilitated, the sleeve seat is facilitated to be mounted through the mounting groove, the suture quick release assembly is facilitated to be limited through the quick release limiting groove, and radial movement of the suture quick release assembly is prevented.

[0014] As preferred, the lower shell outer wall is connected with an air injection valve, the air injection valve is located in the sleeve seat and communicates with the puncture cavity, and the communication position of the air injection valve and the puncture cavity is below the one-way sealing valve

[0015] In summary, the structure of the utility model has the advantages that the suture quick release assembly cooperates with the anchor nail, when the puncture cone is used to arrange the anchor nail in the abdominal cavity, the suture quick release assembly is rotated to facilitate the suture to be pulled out and separated from the suture quick release assembly, so that the muscle tissue of the patient is prevented from being damaged by the excessive connection strength of the anchor nail, suture operation is facilitated, and good healing of the wound is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the utility model's disposable laparoscope puncture sleeve structure.

[0017] Figure 2 It is a sectional view of the utility model's disposable laparoscope puncture sleeve structure.

[0018] Figure 3 It is an explosion schematic view of the utility model's disposable laparoscope puncture sleeve structure.

[0019] Figure 4 It is a structure schematic view of the utility model's suture quick release assembly.

[0020] Figure 5 It is an explosion view of the utility model's suture quick release assembly.

[0021] Figure 6 It is a structure schematic view of the utility model's tube body bottom.

[0022] Figure 7 It is a structure schematic view of the utility model's anchor nail.

[0023] BRIEF DESCRIPTION OF DRAWINGS

[0024] 1, sleeve seat; 10, puncture cavity; 101, one-way sealing valve; 102, fixed sleeve; 103, semispherical sealing ring; 11, fixed shaft; 111, torsion spring limiting slot; 2, tube body; 21, anchor plug slot; 22, anchor plug insertion port; 3, sleeve shell; 30, puncture hole; 31, upper shell; 311, puncture cone bayonet; 32, lower shell; 320, mounting groove; 321, through hole; 322, quick release limiting slot; 323, gas injection valve; 324, suture limiting slot; 4, anchor plug; 41, suture perforation; 42, vertical positioning groove; 43, suture through port; 5, suture; 6, suture quick release assembly; 61, suture positioning sleeve; 611, positioning ring groove; 612, first positioning groove; 613, second positioning groove; 614, wire plug; 615, spline groove; 62, torsion spring mounting sleeve; 621, torsion spring slot; 622, spline insertion block; 623, torsion spring positioning slot; 624, communication port; 63, annular torsion spring; 64, torsion spring plug. DETAILED DESCRIPTION

[0025] First, those skilled in the art should understand that these embodiments are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can adjust them as needed in order to adapt to specific application occasions.

[0026] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0027] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0028] The present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0029] As Figures 1 to 7 shown, the disposable laparoscopic puncture cannula structure includes a cannula, a cannula shell 3, an anchor 4 and a suture 5; the cannula includes an upper cannula seat 1 and a lower tube body 2; the cannula shell 3 is installed on the cannula seat 1 and wraps the cannula seat 1 inside; the top of the cannula shell 3 is provided with a puncture hole 30 in communication with the cannula seat 1; the two side outer walls of the cannula seat 1 are symmetrically provided with fixed shafts 11 distributed in the radial direction (left-right direction); each fixed shaft 11 is rotatably sleeved with a suture quick release assembly 6; the upper end of the suture 5 is detachably wound on the suture quick release assembly 6; the lower end of the suture 5 passes through the bottom of the cannula shell 3 and is connected to the anchor 4 along the outer wall of the tube body 2; the inner walls of the left and right sides of the bottom of the tube body 2 are symmetrically provided with anchor insertion grooves 21 distributed in the axial direction, the two anchor insertion grooves 21 are correspondingly arranged with the two fixed shafts 11, and the anchor insertion groove 21 extends to the bottom end of the tube body 2 to form an anchor insertion port 22, facilitating the insertion of the anchor 4 from the bottom anchor insertion port 22 during installation. The anchor 4 is inserted from bottom to top in the anchor insertion groove 21, and the suture 5 is tensioned between the suture quick release assembly 6 and the anchor 4 in the initial state, and in the ejection state, the anchor 4 is ejected from the anchor insertion groove 21 by the action force of the puncture cone, and finally separated from the suture quick release assembly 6 along with the elongation of the suture 5. The structure cooperates between the suture quick release assembly 6 and the anchor 4, facilitates the arrangement of the anchor 4 in the abdominal cavity by the puncture cone, and facilitates the separation of the suture 5 from the suture quick release assembly 6 after the suture 5 is pulled by the rotation of the suture quick release assembly 6, so as to prevent the excessive connection strength of the anchor 4 from damaging the muscle tissue of the patient, facilitate the suturing operation, and ensure the good healing of the wound.

[0030] As Figures 3 to 5As shown, the suture quick release assembly 6 includes a suture positioning sleeve 61, a torsion spring mounting sleeve 62 and a ring-shaped torsion spring 63 which are sequentially sleeved onto the fixed shaft 11 from inside to outside; the suture positioning sleeve 61 is rotationally sleeved on the fixed shaft 11, and a loop part for looping the suture 5 is arranged on the outer peripheral wall of the suture positioning sleeve 61; the loop part on the suture positioning sleeve 61 facilitates the looping and positioning of the suture 5, and also facilitates the automatic release of the suture 5 from the suture positioning sleeve 61 after rotation. The torsion spring mounting sleeve 62 is rotationally sleeved on the fixed shaft 11 and is clamped with the suture positioning sleeve 61 to realize synchronous rotation; the torsion spring mounting sleeve 62 is provided with a torsion spring groove 621; the ring-shaped torsion spring 63 is installed in the torsion spring groove 621, and the outer end of the ring-shaped torsion spring 63 is connected with the groove wall of the torsion spring groove 621, and the inner end of the ring-shaped torsion spring 63 is connected with the fixed shaft 11, and the ring-shaped torsion spring 63 forms a tendency opposite to the movement direction of the torsion spring mounting sleeve 62 and the suture 5. The torsion spring mounting sleeve 62 facilitates the synchronous connection with the suture positioning sleeve 61, and the installation of the ring-shaped torsion spring 63 can provide a counterforce, thereby ensuring that the suture 5 can be tensioned and fixed, and facilitating the subsequent release of the suture 5 from the suture positioning sleeve 61 by the puncture cone.

[0031] As shown in Figures 3 to 5 The loop part includes a positioning ring groove 611, a first positioning recess 612 and a second positioning recess 613; the positioning ring groove 611 is circumferentially arranged on the outer peripheral wall of the suture positioning sleeve 61; the first positioning recess 612 and the second positioning recess 613 are circumferentially spaced apart on the outer peripheral wall of the suture positioning sleeve 61, and the first positioning recess 612 and the second positioning recess 613 are located on one side of the positioning ring groove 611, and the first positioning recess 612 and the second positioning recess 613 are in communication with the positioning ring groove 611, and the first positioning recess 612 and the second positioning recess 613 form a wire pin 614 for loop positioning. The positioning ring groove 611 facilitates the looping and positioning of the suture 5, and the suture 5 is sleeved on the wire pin 614 after looping, and the wire pin 614 facilitates the automatic release of the suture 5 from the suture positioning sleeve 61 when the suture positioning sleeve 61 is rotated to the bottom, thereby improving the operation convenience.

[0032] As shown in Figures 3 to 5As shown, the suture positioning sleeve 61 is provided with a spline groove 615 on the side wall of the side close to the torsional spring mounting sleeve 62; the torsional spring mounting sleeve 62 is provided with a spline plug 622 on the side wall of the side close to the suture positioning sleeve 61; the spline plug 622 and the spline groove 615 are inserted and matched to realize synchronous rotation of the suture positioning sleeve 61 and the torsional spring mounting sleeve 62. Through the positioning and matching between the spline groove 615 and the spline plug 622, the connection between the suture positioning sleeve 61 and the torsional spring mounting sleeve 62 is facilitated, and synchronous rotation is also facilitated. The torsional spring groove 621 is provided on the side wall of the side of the torsional spring mounting sleeve 62 away from the suture positioning sleeve 61, and the torsional spring groove 621 is provided in a radial recess; the side wall of the side of the torsional spring mounting sleeve 62 away from the suture positioning sleeve 61 is also provided with a torsional spring positioning insertion groove 623, and the torsional spring positioning insertion groove 623 is provided in a radial recess; a communication port 624 is provided between the torsional spring positioning insertion groove 623 and the torsional spring groove 621; the outer end of the annular torsional spring 63 is bent outward to form a U-shaped opening upward, and the outer end of the annular torsional spring 63 is inserted horizontally into the torsional spring positioning insertion groove 623 for limiting, so as to prevent the outer end of the annular torsional spring 63 from being separated from the torsional spring positioning insertion groove 623 during rotation. The middle outer end of the fixed shaft 11 is provided with a torsional spring limiting insertion groove 111 which is horizontally recessed radially; the inner end of the annular torsional spring 63 is horizontally inserted into the torsional spring limiting insertion groove 111. The outer end of the annular torsional spring 63 is positioned and limited by the torsional spring positioning insertion groove 623, and the inner end of the annular torsional spring 63 is positioned and limited by the torsional spring limiting insertion groove 111; the inner end of the annular torsional spring 63 is prevented from being separated from the torsional spring limiting insertion groove 111 during rotation, so as to ensure stable connection of the inner end of the annular torsional spring 63. The above inner and outer end matching structure can prevent the annular torsional spring 63 from falling or displacing, and can limit the two ends of the annular torsional spring 63 during rotation of the torsional spring mounting sleeve 62, so that the annular torsional spring 63 generates a reverse force during rotation.

[0033] As shown in Figure 4 and Figure 5 The suture quick release assembly 6 further comprises a torsional spring plug 64; the torsional spring plug 64 is rotatably sleeved on the fixed shaft 11, and the torsional spring plug 64 is inserted into the torsional spring groove 621 and limits the annular torsional spring 63 between the torsional spring plug 64 and the torsional spring mounting sleeve 62. The torsional spring plug 64 is used to better limit the annular torsional spring 63, so as to prevent the annular torsional spring 63 from falling out of the torsional spring groove 621, thereby ensuring that the annular torsional spring 63 generates a stable reverse force.

[0034] As shown in Figure 6 and Figure 7As shown, the anchor nail 4 is provided with two vertically spaced suture line perforations 41, and the two suture line perforations 41 are radially through; the anchor nail 4 is provided with a vertical positioning groove 42 on one side wall of the tube body 2, which is close to the anchor nail 4 and communicates with the two suture line perforations 41, and the lower end of the vertical positioning groove 42 extends to the bottom end of the tube body 2 to form a suture line through port 43. The two suture line perforations 41 facilitate the suture line to pass through and be fixed, and the vertical positioning groove 42 can provide installation space for the suture line perforation 41 to prevent interference with the anchor nail 4 and the tube body 2.

[0035] As shown in Figure 1 and Figure 2 , the sleeve seat 1 is provided with a puncture cavity 10 for communicating the tube body 2 and the puncture hole 30; the puncture cavity 10 is provided with a sealing assembly; the sealing assembly includes a one-way sealing valve 101, a fixed sleeve 102 and a hemispherical sealing ring 103 arranged from bottom to top; the one-way sealing valve 101 is installed in the puncture cavity 10, the fixed sleeve 102 is installed on the top of the sleeve seat 1, and the one-way sealing valve 101 is limited in the puncture cavity 10; the hemispherical sealing ring 103 is installed on the fixed sleeve 102, and the bottom center of the hemispherical sealing ring 103 extends into the fixed sleeve 102. The one-way sealing valve 101 and the hemispherical sealing ring 103 play a one-way sealing role, which facilitates the communication when the puncture cone is inserted, and vice versa.

[0036] As shown in Figures 1 to 3 , the sleeve shell 3 includes an upper shell 31 and a lower shell 32; the lower shell 32 is provided with a mounting groove 320 for mounting the sleeve seat 1; the groove bottom of the mounting groove 320 is provided with a through hole 321 for the tube body 2 to pass through; the tube body 2 passes through the through hole 321, and the sleeve seat 1 is mounted in the mounting groove 320; the mounting groove 320 is provided with a suture line limiting groove 324 for positioning the suture line; the lower shell 32 is also provided with a quick release limiting groove 322 communicating with the mounting groove 320, and the quick release limiting groove 322 is used to limit and position the suture line quick release assembly 6; the upper shell 31 is installed on the lower shell 32 and wraps the sleeve seat 1; the upper shell 31 is provided with a puncture cone bayonet 311 for cooperating with the puncture cone. The mounting mode of the upper shell 31 and the lower shell 32 facilitates disassembly, the mounting groove 320 facilitates the installation of the sleeve seat 1, the suture line limiting groove 324 prevents the suture line 5 from interfering with the lower shell 32, and the quick release limiting groove 322 facilitates the positioning of the suture line quick release assembly 6, preventing the suture line quick release assembly 6 from moving radially. The lower shell 32 is connected with an air injection valve 323, which is located in the sleeve seat 1 and communicates with the puncture cavity 10, and the communication part of the air injection valve 323 and the puncture cavity 10 is located below the one-way sealing valve 101.

[0037] In the specific installation of the embodiment, the suture 5 uses a double-coil connection mode, the connection mode is more stable and reliable, liquid glue is used at the broken part of the line to ensure the connection strength of the coil itself during the pulling process, and the suture quick release assembly 6 is effectively triggered under stress when triggered. After calculation, the length of the suture 5 is just enough to wrap the positioning ring groove 611 of the suture positioning sleeve 61 for one circle, and is on the line bolt 614, and the connection length to the anchor 4 on the pipe body 2, so that the suture 5 is in a tense state when the anchor 4 is not triggered.

[0038] When the suture quick release assembly 6 is used, the suture positioning sleeve 61, the torsional spring mounting sleeve 62, the annular torsional spring 63 and the torsional spring cover 64 are sequentially installed on the fixed shaft 11 of the sleeve seat 1. Under the action of the annular torsional spring 63, the suture quick release assembly 6 can only rotate in one direction (clockwise), and the annular torsional spring 63 has a stop effect of reverse rotation (counterclockwise). Without the action of the puncture cone, the suture 5 cannot be pulled out of the suture quick release assembly 6 by reverse rotation. When the suture 5 is installed, the suture 5 is sleeved on the line bolt 614 and clamped into the positioning ring groove 611 and rotated clockwise for one circle, and then pulled to the anchor 4 at the bottom end of the pipe body 2, and then the anchor 4 is inserted into the anchor insertion slot 21, so that the suture 5 is tensioned and fixed.

[0039] When the anchor 4 is arranged in the abdominal cavity under the action of the puncture cone, the suture quick release assembly 6 rotates one circle under the action of the tension of the suture 5, the line bolt 614 on the suture positioning sleeve 61 rotates to the bottom, the suture 5 slides off the line bolt 614, and the suture quick release assembly 6 and the suture 5 are released, so as to prevent the anchor 4 from damaging the muscle tissue of the patient due to excessive connection strength, facilitate the suturing operation, and ensure good healing of the wound.

[0040] In the description of the embodiments of the present application, it should be explained that in the description of the present application, the terms indicating the direction or position relationship are based on the direction or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0041] In the description of the application, the description of the terms "one embodiment", "some embodiments", "in this embodiment", "specific example", or "some examples" and the like means that the specific features, mechanisms, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0042] The above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A disposable laparoscopic puncture cannula structure comprising a cannula, a cannula shell (3), an anchor (4) and a suture (5); the cannula comprises an upper cannula seat (1) and a lower tube body (2); the cannula shell (3) is installed on the cannula seat (1) and wraps the cannula seat (1) inside; the top of the cannula shell (3) is provided with a puncture hole (30) in communication with the cannula seat (1); characterized in that, The outer wall of the sleeve seat (1) is radially provided with a fixing shaft (11); the fixing shaft (11) is rotationally sleeved with a suture quick release assembly (6); the upper end of the suture (5) is detachably wound on the suture quick release assembly (6); the lower end of the suture (5) passes through the bottom of the sleeve shell (3) and is connected to the anchor (4) along the outer wall of the tube body (2); the inner wall of the bottom of the tube body (2) is axially provided with an anchor insertion slot (21), and the anchor insertion slot (21) extends to the bottom end of the tube body (2) to form an anchor insertion port (22); the anchor (4) is inserted into the anchor insertion slot (21), and in the initial state, the suture (5) is tensioned and connected between the suture quick release assembly (6) and the anchor (4); in the ejection state, the anchor (4) is ejected from the anchor insertion slot (21) by the action of the puncture cone, and finally separated from the suture quick release assembly (6) along with the elongation of the suture (5).

2. The disposable laparoscopic trocar assembly according to claim 1, wherein The suture quick release assembly (6) comprises a suture positioning sleeve (61), a torsional spring mounting sleeve (62) and an annular torsional spring (63) which are sequentially sleeved onto the fixing shaft (11) from inside to outside; the suture positioning sleeve (61) is rotationally sleeved on the fixing shaft (11), the outer peripheral wall of the suture positioning sleeve (61) is provided with a bundling part for bundling the suture (5); the torsional spring mounting sleeve (62) is rotationally sleeved on the fixing shaft (11) and is clamped with the suture positioning sleeve (61) to realize synchronous rotation; the torsional spring mounting sleeve (62) is provided with a torsional spring groove (621) inside; the annular torsional spring (63) is installed in the torsional spring groove (621), and the outer end of the annular torsional spring (63) is connected with the groove wall of the torsional spring groove (621), and the inner end of the annular torsional spring (63) is connected with the fixing shaft (11), and the annular torsional spring (63) forms a tendency opposite to the movement direction of the torsional spring mounting sleeve (62) and the suture (5).

3. The disposable laparoscopic trocar assembly according to claim 2, wherein The bundling part comprises a positioning ring groove (611), a first positioning groove (612) and a second positioning groove (613); the positioning ring groove (611) is circumferentially arranged on the outer peripheral wall of the suture positioning sleeve (61); the first positioning groove (612) and the second positioning groove (613) are circumferentially arranged at intervals on the outer peripheral wall of the suture positioning sleeve (61), the first positioning groove (612) and the second positioning groove (613) are located on one side of the positioning ring groove (611), and the first positioning groove (612) and the second positioning groove (613) are in communication with the positioning ring groove (611), and the first positioning groove (612) and the second positioning groove (613) form a wire plug (614) for bundling positioning therebetween.

4. The disposable laparoscopic trocar assembly according to claim 2, wherein The side wall of the suture positioning sleeve (61) near the torsional spring mounting sleeve (62) is provided with a spline groove (615); the side wall of the torsional spring mounting sleeve (62) near the suture positioning sleeve (61) is provided with a spline plug (622); the spline plug (622) and the spline groove (615) are inserted and matched to realize synchronous rotation of the suture positioning sleeve (61) and the torsional spring mounting sleeve (62).

5. The disposable laparoscopic trocar structure as claimed in claim 2 or 4, wherein, The torsional spring slot (621) is arranged on the side wall of the torsional spring mounting sleeve (62) away from the suture positioning sleeve (61), and the torsional spring slot (621) is arranged in a radial recess; the side wall of the torsional spring mounting sleeve (62) away from the suture positioning sleeve (61) is further provided with a torsional spring positioning slot (623), and the torsional spring positioning slot (623) is arranged in a radial recess; the communication port (624) is arranged between the torsional spring positioning slot (623) and the torsional spring slot (621); the outer end of the annular torsional spring (63) is bent outward, and the outer end of the annular torsional spring (63) is inserted into the torsional spring positioning slot (623); the middle part of the fixed shaft (11) is provided with a torsional spring limiting slot (111) arranged in a radial recess; the inner end of the annular torsional spring (63) is horizontally inserted into the torsional spring limiting slot (111).

6. The disposable laparoscopic trocar assembly according to Claim 2, wherein, The suture quick release assembly (6) further comprises a torsional spring plug (64); the torsional spring plug (64) is rotatably sleeved onto the fixed shaft (11), and the torsional spring plug (64) is inserted into the torsional spring slot (621) and limits the annular torsional spring (63) between the torsional spring plug (64) and the torsional spring mounting sleeve (62).

7. The disposable laparoscopic trocar assembly according to Claim 1, wherein, The anchor (4) is provided with two vertically spaced suture perforations (41), and the two suture perforations (41) are arranged in a radial through manner; the anchor (4) is provided with a vertical positioning slot (42) on the side wall close to the tube body (2), which communicates with the two suture perforations (41), and the lower end of the vertical positioning slot (42) extends to the bottom end of the tube body (2) to form a suture through hole (43).

8. The disposable laparoscopic trocar assembly according to claim 1, wherein The sleeve seat (1) is provided with a puncture cavity (10) for communicating the tube body (2) and the puncture hole (30); the puncture cavity (10) is provided with a sealing assembly; the sealing assembly comprises a one-way sealing valve (101), a fixed sleeve (102) and a semispherical sealing ring (103) arranged in sequence from bottom to top; the one-way sealing valve (101) is installed in the puncture cavity (10), the fixed sleeve (102) is installed on the top of the sleeve seat (1), and the one-way sealing valve (101) is limited in the puncture cavity (10); the semispherical sealing ring (103) is installed on the fixed sleeve (102), and the bottom center of the semispherical sealing ring (103) extends into the fixed sleeve (102).

9. The disposable laparoscopic trocar assembly according to claim 8, wherein The sleeve shell (3) comprises an upper shell (31) and a lower shell (32); the lower shell (32) is provided with a mounting groove (320) for mounting the sleeve base (1); the groove bottom of the mounting groove (320) is provided with a through hole (321) for the pipe body (2) to pass through; the pipe body (2) passes through the through hole (321) and makes the sleeve base (1) mounted in the mounting groove (320); the mounting groove (320) is provided with a suture limiting groove (324) for positioning the suture; the lower shell (32) is further provided with a quick release limiting groove (322) in communication with the mounting groove (320), and the quick release limiting groove (322) is used for limiting and positioning the suture quick release assembly (6); the upper shell (31) is mounted on the lower shell (32) and wraps the sleeve base (1) inside; the upper shell (31) is provided with a puncture cone bayonet (311) for cooperating with the puncture cone.

10. The disposable laparoscopic trocar assembly according to claim 9, wherein The lower shell (32) is connected with a gas injection valve (323) on the outer wall, the gas injection valve (323) is located in the sleeve base (1) and communicates with the puncture cavity (10), and the communication position of the gas injection valve (323) and the puncture cavity (10) is located below the one-way sealing valve (101).

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