CN108261229B

CN108261229B - Puncture core subassembly and have its puncture ware

Info

Publication number: CN108261229B
Application number: CN201611271008.7A
Authority: CN
Inventors: 孙宝峰; 马猛
Original assignee: Jiangsu Fengh Medical Equipment Co Ltd
Current assignee: Jiangsu Fengh Medical Equipment Co Ltd
Priority date: 2016-12-30
Filing date: 2016-12-30
Publication date: 2020-02-04
Anticipated expiration: 2036-12-30
Also published as: CN108261229A

Abstract

The invention discloses a puncture core assembly, which comprises a puncture assembly and a suture assembly; the puncture assembly comprises a puncture end and a puncture core rod, and an accommodating space is formed between the puncture end and the puncture core rod; the stapling assembly is positioned within the piercing assembly and at least a portion of the stapling assembly is movable within the piercing assembly; one end of a suture is passed through the tissue in the receiving space by movement of the suturing assembly. According to the puncture core assembly and the puncture outfit with the same, the puncture hole does not need to be enlarged, and additional surgical instruments do not need to be added, so that the puncture effect can be realized to establish a channel for an anastomat or other surgical instruments to enter a patient body; the puncture hole can be sutured in a narrow puncture hole, and the suturing effect is good; can effectively avoid the puncture hole hernia caused by the puncture hole of the minimally invasive surgery, effectively reduce the pain of the patient and facilitate the postoperative rehabilitation of the patient.

Description

Puncture core subassembly and have its puncture ware

Technical Field

The invention relates to a surgical instrument, in particular to a puncture core assembly and a puncture outfit with the same, and belongs to the field of medical equipment.

Background

In abdominal cavity examination, abdominal cavity operation and other minimally invasive or surgical operations, a puncture outfit is an indispensable surgical instrument. The puncture instrument may establish an access channel in the abdominal wall of the body for the entry of a stapler or other surgical instrument (e.g., endoscope, scissors, guide wire, catheter, filter, stent, etc.) into the abdominal cavity and provide a passage for the ingress and egress of gas to control the pneumoperitoneum required for the procedure to be performed for examination or surgical procedures.

In the minimally invasive laparoscopic medical operation, if the focus is found in a human body and needs to be operated or cut, pneumoperitoneum needs to be performed in the abdominal cavity of the human body in the operation process. The establishment of pneumoperitoneum is an important operation process of laparoscopic surgery, and under the condition of sufficient pneumoperitoneum, the distance between an abdominal cavity and an organ is expanded, the distance between the organ and the organ is also expanded, and a relatively wide visual field and an operation environment which is easy to operate are provided for an operator. After the pneumoperitoneum is completed, a doctor generally firstly cuts a small incision on the abdomen of a patient, then aligns the puncture end of the puncture outfit with the cut small incision to reciprocate and simultaneously moves the puncture outfit downwards, so that the puncture core assembly guides the puncture sleeve to pass through the cortex of the abdomen of the patient; then the puncture core component is pulled out, and the anastomat or other surgical instruments can enter and exit the abdominal cavity of the patient through the puncture cannula to carry out surgical operation. The existing puncture core assembly only plays a role of puncture, and the puncture cannula is discarded after being guided into a patient body from an incision of the abdomen of the human body.

And (4) removing the focus, taking out the puncture cannula assembly, and finishing the operation. The punctured wound is generally not sutured and is automatically healed only by the patient; because the puncture hole of the minimally invasive surgery is small and deep, particularly, the abdominal wall of an obese patient is thick, the visual field of the suture is small, the skin on the surface of the patient is only sutured after the surgery, and the peritoneum on the inner side of the abdominal wall is difficult to suture. Such patients are prone to serious complications such as hernia in the puncture hole after surgery, and require further treatment. When a puncture hole of a patient needs to be sutured, particularly a puncture hole of an obese patient, only a suturing device special for suturing the puncture hole can be used, but surgical instruments are additionally added, suturing cost is high, the surgical instruments are multiple, and operation is inconvenient. In addition, the suturing device specially used for suturing the puncture hole has a complex structure and is inconvenient to use.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a puncture core assembly with a puncture function and capable of suturing a puncture hole and a puncture outfit with the same, and the invention is realized by the following technical scheme:

a puncture core assembly comprising a puncture assembly and a suture assembly; the puncture assembly comprises a puncture end and a puncture core rod, and an accommodating space is formed between the puncture end and the puncture core rod; the stapling assembly is positioned within the piercing assembly and at least a portion of the stapling assembly is movable within the piercing assembly; the suture assembly comprises a first element and a second element, wherein the first element and the second element are detachably connected, one end of the suture line is tied to the second element, the connected first element and the second element penetrate one end of the suture line through the tissue in the accommodating space through movement, the puncture end is further provided with an accommodating groove, and the second element can be fixed in the accommodating groove.

The first element has a pointed end that is passable through and exposable from the second element.

The first element is a suture needle and the pointed end is a needle point.

The second element includes a through hole through which the one end of the suture passes and forms a knot.

The second element includes a through passage for receiving at least a portion of the first element such that the first element is releasably connectable with the second element.

The at least a portion of the first element includes a tip that passes through and emerges from the channel.

The puncture assembly further comprises a connecting rod, the connecting rod is positioned between the puncture end and the puncture core rod, and the cross-sectional area of the connecting rod is smaller than that of the puncture end and the puncture core rod, so that the accommodating space is formed between the puncture end and the puncture core rod.

The stapling assembly further comprises an inner rod, the first member being coupled to the inner rod, the inner rod being movable within the piercing mandrel.

The puncture core rod is provided with a through groove which is used for indicating and limiting the position of the suture assembly.

The outer surface of the first element and the outer surface of the second element do not exceed the outer surface of the puncture core rod.

The puncture core rod is further provided with a limiting groove, the inner rod is provided with a limiting column, and the limiting column can move in the limiting groove.

The height of the accommodating space is larger than or equal to the thickness of subcutaneous tissues of the patient.

A puncture instrument comprising the puncture core assembly according to any of the preceding claims, the puncture instrument comprising a puncture cannula assembly into which the puncture core assembly is extendable.

According to the puncture core assembly and the puncture outfit with the same, the puncture hole does not need to be enlarged, and additional surgical instruments do not need to be added, so that the puncture effect can be realized to establish a channel for an anastomat or other surgical instruments to enter a patient body; the puncture hole can be sutured in a narrow puncture hole, and the suturing effect is good; can effectively avoid the puncture hole hernia caused by the puncture hole of the minimally invasive surgery, effectively reduce the pain of the patient and facilitate the postoperative rehabilitation of the patient.

Drawings

FIG. 1 is a schematic view of a prior art piercing core assembly;

FIG. 2 is a schematic representation of the puncture core assembly when unslotted according to an embodiment of the present invention;

FIG. 3 is an exploded schematic view of a piercing core assembly according to an embodiment of the present invention;

FIG. 4 is a schematic view of a needle configuration of a core piercing assembly according to an embodiment of the present invention;

FIG. 5 is a schematic view of a suture fixation block configuration of a core piercing assembly in accordance with an embodiment of the present invention;

FIG. 6 is a schematic view of the piercing end structure of the piercing core assembly according to an embodiment of the present invention;

FIG. 7 is a schematic representation of the post-suture configuration of the piercing core assembly in accordance with an embodiment of the present invention;

fig. 8 is a schematic structural view of a puncture instrument according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

As shown in fig. 1, the puncture core rod 20 of the puncture core assembly 1000 of the prior art is a hollow circular tube, the puncture end 10 is conical, and the rear end of the puncture end 10 is connected to the front end of the puncture core rod 20. The puncture core assembly in the prior art only plays a role of puncture, a puncture hole cannot be sutured, the puncture sleeve is discarded after being guided into a patient body from an incision of the abdomen of the human body, and a special suturing instrument must be reused if the puncture hole needs to be sutured.

The puncture core assembly 100 of the present embodiment includes a puncture assembly and a suture assembly. As shown in fig. 2, the puncture assembly comprises a puncture end 1, a connecting rod 23, a puncture core rod 2 and a handle 3. As shown in fig. 3, the suture assembly comprises a key 4, an inner rod 5, a spring 6, a suture needle 7, a suture fixing block 8 and a suture 9. More specifically, the suture needle 7 and the suture fixing block 8 are both two. For convenience of description and simplification of description, in the embodiment of the present invention, based on the orientation or positional relationship shown in fig. 2, one end of each member near the piercing end 1 is referred to as "proximal end" or "lower" and "first end", one end near the handle 3 is referred to as "distal end" or "upper" and "second end", the axial direction of the piercing mandrel is referred to as "height" direction, and the radial direction of the piercing mandrel is referred to as "width" direction.

As shown in fig. 2 or 3, the puncture assembly is integrally formed or fixedly connected, specifically, the distal end of the puncture tip 1 is integrally formed or fixedly connected with the proximal end of the connecting rod 23, the distal end of the connecting rod 23 is integrally formed or fixedly connected with the proximal end of the puncture core rod 2, and the distal end of the puncture core rod 2 is integrally formed or fixedly connected with the handle 3. Preferably, the puncture tip 1 is separately molded and then the distal end thereof is fixedly connected to the proximal end of the connecting rod 23, and the distal end of the connecting rod 23 is integrally molded with the proximal end of the puncture core rod 2. Because the diameter of the puncture core rod 2 is greatly different from that of the handle 3, the far end of the puncture core rod 2 is fixedly connected with the handle 3. By fixedly connected, it is meant that the two components in a fixedly connected relationship are separate components, and the connection is made in a manner commonly known in the art, such as by bonding, melting, and snapping, and will not be described in detail herein. The puncture end 1 is generally conical, and generally conical means that the puncture end 1 is conical or similar to a cone, namely, a generatrix of the puncture end 1 can be a straight line, and also can be an outward convex curve or an inward concave curve. The puncture core rod 2 is a hollow round tube, the diameters of the puncture core rod 2 from the near end to the far end are the same, and the maximum diameter of the puncture end 1 is approximately equal to the diameter of the puncture core rod 2. The puncture end 1 is connected with the puncture core bar 2 through a connecting rod 23, and the height between the upper surface of the puncture end 1 and the lower surface of the puncture core bar 2 of the connecting rod 23 is larger than or equal to the thickness of subcutaneous tissue of a patient. The connecting rod 23 is a cylinder or a rectangular parallelepiped, and when the connecting rod 23 is a cylinder, the diameter thereof is smaller than that of the puncture core rod 2, and the cross-sectional area of the connecting rod 23 is smaller than that of the puncture core rod 2, so that a space is formed between the puncture end 1 and the puncture core rod 2. When the connecting rod 23 is a cuboid, the width and the length of the connecting rod are both smaller than the diameter of the puncture core rod 2; on the premise of meeting the required strength, the smaller the cross-sectional area of the connecting rod 23 is, the better, so that the space formed between the distal end of the puncture tip 1 and the proximal end of the puncture core rod 2 is larger, and further, the central axis of the connecting rod 23 coincides with the central axis of the puncture core rod 2.

As shown in fig. 3, the distal end of the puncture core rod 2 is fixedly connected with or integrally formed with the handle 3, and the distal end of the inner rod 5 is fixedly connected with or integrally formed with the push button 4. The inner rod 5 and the push button 4 can be moved inside the plunger 2 and the handle 3, i.e. the inner rod 5 can be moved up and down inside the plunger 2, and the push button 4 and at least a part of the inner rod 5 can be moved up and down inside the handle 3. Specifically, the handle 3 is a substantially hollow cylinder, a cylindrical passage 31 is arranged in the handle 3, and the central axis of the cylindrical passage 31 coincides with the central axis of the handle 3; the puncture core rod 2 is a hollow round tube, and the central axis of the inner rod 5 is superposed with the central axis of the puncture core rod 2. The puncture core rod 2 is internally provided with a spring 6, and after the puncture core rod 2 is fixedly connected with the handle 3 or integrally formed, the spring 6 is arranged in the cylindrical channel 31 of the handle 3 until the near end of the spring 6 is abutted against the near end of the puncture core rod 2; after the inner rod 5 and the button 4 are fixedly connected or integrally formed, the suture assembly is installed from the cylindrical channel 31 of the handle 3 until the upper surface of the button 4 is flush with the upper surface of the handle 3, and at this time, the proximal end of the inner rod 5 abuts against the distal end of the spring 6.

In order to prevent the inner rod 5 from rotating in the puncture core rod 2 during assembly or suturing, the far end of the inner rod 5 is provided with a limit column 53, the far end of the puncture core rod 2 is provided with a limit groove 21, and the upper end of the limit groove 21 extends to the upper end of the puncture core rod 2; the diameter of the limiting column 53 is approximately equal to the width of the limiting groove 21, so that the limiting column 53 can only move up and down in the limiting groove 21 and cannot rotate circumferentially, and the inner rod 5 only moves up and down in the puncture core rod 2; the stroke of the up-and-down movement of the limit post 53 is limited by the length of the limit groove 21, and further the stroke of the movement of the inner rod 5 in the puncture core rod 2 is limited. When the limiting column 53 is located at the lower end of the limiting groove 21, the suture line fixing block 8 is fixed in the accommodating groove 11 on the puncture end 1, so that the lower end of the limiting groove 21 effectively limits the inner rod 5 to continuously push the suture needle 7 to move downwards after the suture is finished, and the groove length of the limiting groove 21 is smaller than the length of the suture needle 7.

As shown in fig. 3, the suture assembly comprises a key 4, an inner rod 5, a spring 6, a suture needle 7, a suture fixing block 8 and a suture 9. The proximal end of the inner rod 5 is provided with at least two recessed surfaces 52, the distal end of the suture needle 7 is in installation fit with the recessed surfaces 52, the suture needle 7 can be fixed with the inner rod 5 and then extend into the puncture core rod 2, or the inner rod 5 can be firstly extended into the puncture core rod 2 and then the suture needle 7 is fixed with the inner rod 5, preferably, the inner rod 5 is firstly extended into the puncture core rod 2 and then the suture needle 7 is fixed with the inner rod 5. This provides the maximum suture range without enlarging the puncture hole. Specifically, the proximal end of the piercing core rod 2 is provided with a through groove 22, and the lower end of the through groove 22 extends to the lower end of the piercing core rod 2. The through groove 22 is used for accommodating the suture needle 7, the suture needle 7 is fixedly connected with the inner rod 5, and the outer surfaces of the suture needle 7 and the suture fixing block 8 do not exceed the outer surface of the puncture core rod 2, so that the suture needle 7 is far away from the puncture hole during suturing, and the distance between the two suture needles 7 is approximately equal to the diameter of the puncture core rod 2. Preferably, the inner rod 5 and the suture needle 7 are matched in an interference fit or transition fit manner, further, one of the concave surface 52 of the inner rod 5 and the suture needle 7 is provided with a mounting column, and the other is provided with a mounting hole; alternatively, the recessed surface 52 of the inner rod 5 is simultaneously provided with mounting posts and mounting holes, and the suture needle 7 is simultaneously provided with mounting holes and mounting posts in a number corresponding to that of the inner rod 5. Preferably, at least one mounting post 51 is disposed on each recessed surface 52, correspondingly, at least one mounting hole 71 is disposed on the distal end of each suture needle 7, and the mounting post 51 is in interference fit or transition fit with the mounting hole 71, so as to fixedly connect the proximal end of the inner rod 5 with the distal end of the suture needle 7. Preferably, the suturing assembly comprises two suturing needles 7, and correspondingly, the proximal end of the inner rod 5 is provided with two concave surfaces 52, and the two concave surfaces 52 are symmetrically arranged.

The proximal end of the puncture core rod 2 is symmetrically provided with two through grooves 22, and the suture assembly is arranged in the cylindrical channel 31 of the handle 3 until the upper surface of the key 4 is flush with the upper surface of the handle 3; the suture needle 7 is fixedly connected with the mounting column 51 of the inner rod 5 through the through groove 22, after the suture needle 7 is connected with the mounting column 51 of the inner rod 5 in an interference fit manner, the suture needle 7 is positioned in the through groove 22, the suture line fixing block 8 is mounted on the needle point 72 of the suture needle 7, the needle point 72 is exposed out of the suture line fixing block 8, the suture needle 7 and the suture line fixing block 8 are arranged in the through groove 22, and the length of the through groove 22 is equal to or slightly greater than that of the suture needle 7; and the outer surfaces of the suture needle 7 and the suture line fixing block 8 do not exceed the outer surface of the puncture core rod 2, so that the suture needle 7 is far away from the puncture hole during suture, and the distance between the two suture needles 7 is approximately equal to the diameter of the puncture core rod 2, thereby ensuring that the maximum suture range is provided on the premise of not enlarging the puncture hole.

The suture fixing block 8 comprises a channel 82 which is arranged to penetrate through from top to bottom and is used for being connected with the suture needle 7, the needle point 72 penetrates through the channel 82 and is exposed out of the channel 82, and the needle point 72 is in clearance fit with the channel 82; the side wall of the suture fixing block 8 is also provided with a through hole 81, the tails 91 of the suture 9 respectively pass through the through hole 81 and form a knot at the through hole 81, and two tails 91 of the suture 9 respectively match with one suture fixing block 8 and form a knot at the through hole 81. Preferably, the distal end 92 of the suture 9 passes through the limiting groove 21 below the limiting column 53, the outer wall of the puncture core rod 2 is exposed, and a slipknot is formed at the outer wall, so as to prevent the suture 9 from scattering between the puncture core rod 2 and the inner rod 5, as shown in fig. 6, the puncture end 1 is provided with a containing groove 11 for matching with the suture fixing block 8; the suture line fixing block 8 is in interference fit with the accommodating groove 11; the accommodating groove 11 is an installation groove which is in copying fit with the suture fixing block 8, so that after the suture fixing block 8 enters the accommodating groove 11, the outer surface of the suture fixing block 8 is completely attached to the accommodating groove 11; the connection is firmer. Furthermore, the size of the accommodating groove 11 close to the periphery of the puncture end 1 is the smallest, so that the risk that the suture fixing block 8 is radially dropped from the inside of the accommodating groove 11 after being installed in the accommodating groove 11 is avoided; preferably, the suture fixing block 8 further includes a concave groove 83, and correspondingly, a protrusion (not shown) corresponding to the concave groove is disposed in the receiving groove 11, so that after the suture fixing block 8 is installed in place in the receiving groove 11, the protrusion and the concave groove 83 can provide auditory and tactile feedback for a doctor when being engaged, thereby effectively preventing the inner rod 5 from being continuously pushed to move downwards after suturing is completed. And the risk that the suture line fixing block 8 falls off from the accommodating groove 11 after being installed in the accommodating groove 11 is avoided. In order to achieve a better clamping effect, the clamping surface 13 at the far end of the puncture end 1 is further provided with anti-skid lines, the anti-skid lines are straight lines or curved lines or a plurality of point-shaped protrusions, preferably, the anti-skid lines are arc lines, and more recently, the anti-skid lines are circular arcs; specifically, the anti-slip pattern is a part of a circular arc of a plurality of concentric circles.

During operation, after pneumoperitoneum is completed, a doctor firstly cuts a small incision on the abdomen of a patient, the outer surface of the puncture end 1 is also provided with a separation structure 12, and the separation structure 12 and the puncture end 1 are integrally formed or fixedly connected. Then, the puncture end of the puncture outfit 300 of the invention is aligned with the small incision which is cut to reciprocate and simultaneously move the puncture outfit downwards, so that the near end of the puncture cannula passes through the abdominal cortex of the patient; the puncture core assembly 100 is then withdrawn, and the stapler or other surgical instrument may be passed through the puncture cannula assembly and into and out of the patient's abdominal cavity for surgical procedures. The skin of a human body is sequentially provided with a epidermis layer, a dermis layer and a subcutaneous tissue from outside to inside, and the occurrence of puncture hole hernia can be effectively prevented as long as the subcutaneous tissue at the puncture hole of a patient is sutured. Because the subcutaneous tissue of the patient is sutured, the puncture hole is not opened, and the epidermal layer or the dermal layer is easy to automatically heal.

After a focus is removed and the puncture cannula assembly is pulled out, the puncture core assembly 100 disclosed by the embodiment of the invention is inserted into a patient body from a puncture hole, the proximal end surface of the puncture core rod 2 enters subcutaneous tissue of the patient, the handle 3 is held to move the puncture core assembly 100 upwards until the clamping surface 13 at the distal end of the puncture end 1 is flush with the subcutaneous tissue bottom layer of the patient, the proximal end of the puncture core rod 2 is wrapped by the tissue at the puncture hole of the patient, and due to the elasticity of the human tissue, the space is filled with the tissue at the puncture hole of the patient, namely the tissue at the puncture hole of the patient wraps the connecting rod 23 and fills the space between the distal end of the puncture end 1 and the proximal end of the puncture core rod 2; because the clamping surface 13 at the far end of the puncture end 1 is also provided with the anti-skidding lines, the tissue of a patient can be prevented from slipping out of the space in the puncture process. As shown in fig. 7, the button 4 is pressed down, the slipknot at the distal end 92 of the suture 9 is released, the button 4 sequentially pushes the inner rod 5, the suture needle 7 and the suture fixing block 8 to move downwards, specifically, a step part is further arranged between the needle point 72 of the suture needle 7 and other parts of the suture needle 7, the step part is pressed against the upper surface of the suture fixing block 8 and pushes the suture fixing block 8, so that the suture fixing block 8 moves downwards, and then the two ends 91 of the suture 9 are respectively and gradually contacted from two points A, B in fig. 7 and puncture the patient tissue in the space between the puncture end 1 and the puncture core rod 2, the sunken groove 83 of the suture fixing block 8 is matched with a bulge (not shown) in the accommodating groove 11 of the puncture end 1 to generate auditory and tactile feedback, so as to prompt a doctor that the suture needle 7 punctures the subcutaneous tissue of the patient and guide the suture fixing block 8 to be installed in the accommodating groove 11 of the puncture end, at this time, the two end tails 91 of the suture thread 9 are respectively passed out from D, C in fig. 7. Suture anchor block 8 introduces tail 91 of suture 9 under the subcutaneous tissue of the patient as tail 91 of suture 9 passes through throughbore 81 and forms a knot at throughbore 81. In addition, the doctor can also judge whether the suture fixing block 8 is fixed in the accommodating groove 11 on the puncture end 1 by observing the position relationship between the inner rod 5 and the puncture core rod 2, specifically, judge by observing the position of the limiting column 53 in the limiting groove 21, and when the limiting column 53 reaches the lower end of the limiting groove 21, the suture fixing block 8 is fixed in the accommodating groove 11 on the puncture end 1, so that the next operation can be carried out; otherwise, it indicates that the button 4 is not in place and needs to be pressed continuously.

When a doctor determines that the suture fixing block 8 is fixed in the accommodating groove 11 on the puncture end 1 (namely, the doctor indicates that the suture needle 7 completely punctures subcutaneous tissues of a patient), the button 4 is released, the spring 6 is released and extends, the elastic tension of the spring 6 pushes the inner rod 5 to move upwards, the inner rod 5 drives the suture needle 7 to move upwards, and the tissue of the patient prevents the clamping surface 13 at the far end of the puncture end 1 from moving upwards because the clamping surface 13 at the far end of the puncture end 1 is positioned below the subcutaneous tissues of the patient, so that the puncture end 1 is prevented from moving upwards; because of the sunken groove 83 of stylolite fixed block 8 and the protruding fit mode of puncture end 1's storage tank 11 in be interference fit, stylolite fixed block 8 is difficult to and separates with storage tank 11 after the cooperation, and suture needle 7 and stylolite fixed block 8 clearance fit, so loosen button 4 back, interior pole 5 drives suture needle 7 and stylolite fixed block 8 separation, and suture needle 7 is withdrawed to puncture core bar 2's near-end in leading to groove 22, and stylolite fixed block 8 is located puncture end 1's storage tank 11. When the limiting post 53 of the inner rod 5 moves to the upper end of the limiting groove 21 of the puncture core rod 2, the inner rod 5 stops moving upwards under the constraint of the handle 3. The puncture core assembly 100 is moved upwards by holding the handle 3, the puncture core rod 2, the connecting rod 23 and the puncture end 1 are separated from the body of a patient, the suture fixing block 8 is fixedly connected with the accommodating groove 11 of the puncture end 1, the puncture end 1 and the suture fixing block 8 are separated from the body of the patient, the suture tail 91 of the suture 9 is connected with the suture fixing block 8, the suture tail 91 of the suture 9 is positioned below the subcutaneous tissue of the patient, in the process that the puncture end 1 is separated from the body of the patient, the two suture tails 91 of the suture 9 move upwards from the puncture hole, so that the far end 92 of the suture 9 is separated from the lower part of the limiting groove 21 and gradually enters the body of the patient until the suture is contacted with the subcutaneous tissue of the patient. After the puncture tip 1 is separated from the body of the patient, the two tail ends 91 of the suture thread 9 are tightened and knotted, and the redundant suture thread 9 is subtracted, so that the puncture hole is sutured. The occurrence of puncture hernia can be effectively prevented only by suturing the subcutaneous tissue at the puncture hole of the patient; preferably, the patient is tied to the epidermis layer or dermis layer so that the knot is located within the puncture hole and does not leak out of the patient's skin to prevent post-operative contact with the knot, and the puncture hole does not open because the patient's subcutaneous tissue has been sutured, thereby facilitating automatic healing of the epidermis layer or dermis layer. Preferably, the suture 9 is a human absorbable suture.

Based on the puncture core assembly 100 as described above, the present invention further provides a puncture device 300, referring to fig. 8, the puncture device 300 further comprises a puncture cannula assembly 200, during puncturing, the puncture core assembly 100 is inserted into the puncture cannula assembly 200, and the puncture cannula assembly 200 is guided into the abdominal cavity of the patient, so that other surgical instruments can enter the body of the patient for performing the surgical operation, after the surgical operation is finished, the puncture core assembly 100 of the present invention can also suture the puncture hole.

In conclusion, according to the puncture core assembly and the puncture outfit with the same, the puncture hole does not need to be enlarged, and additional surgical instruments do not need to be added, so that the puncture function can be realized to establish a channel for an anastomat or other surgical instruments to enter a patient body; the puncture hole can be sutured in a narrow puncture hole, and the suturing effect is good; can effectively avoid the puncture hole hernia caused by the puncture hole of the minimally invasive surgery, effectively reduce the pain of the patient and facilitate the postoperative rehabilitation of the patient.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A puncture core assembly comprising a puncture assembly and a suture assembly; it is characterized in that the preparation method is characterized in that,

the puncture assembly comprises a puncture end and a puncture core rod, and an accommodating space is formed between the puncture end and the puncture core rod; the stapling assembly is positioned within the piercing assembly and at least a portion of the stapling assembly is movable within the piercing assembly; the suture assembly comprises a first element and a second element, wherein the first element and the second element are detachably connected, one end of a suture is tied to the second element, and the connected first element and the second element pass one end of the suture through tissues in the accommodating space through movement; the puncture assembly further comprises a connecting rod, the connecting rod is positioned between the puncture end and the puncture core rod, and the cross sectional area of the connecting rod is smaller than that of the puncture end and the puncture core rod, so that the accommodating space is formed between the puncture end and the puncture core rod.

2. The puncture core assembly of claim 1, wherein the first element has a pointed end that is passable through and exposable from the second element.

3. The puncture core assembly of claim 2, wherein the first element is a suture needle and the pointed end is a needle tip.

4. The puncture core assembly of claim 1, wherein the second element comprises a through hole through which the one end of the suture passes and forms a knot.

5. The puncture core assembly of claim 1, wherein the second element comprises a passageway therethrough for receiving at least a portion of the first element such that the first element is releasably connectable with the second element.

6. The puncture core assembly of claim 5, wherein said at least a portion of said first element comprises a tip that passes through and emerges from said channel.

7. The puncture core assembly of claim 1, wherein the suturing assembly further comprises an inner rod, the first member being connected to the inner rod, the inner rod being movable within the puncture core rod.

8. The puncture core assembly of claim 1, wherein the puncture core rod is provided with a through slot for indicating and limiting the position of the suturing assembly.

9. The puncture core assembly of claim 1, wherein the outer surface of the first member and the outer surface of the second member do not extend beyond the outer surface of the puncture core rod.

10. The puncture core assembly according to claim 1, wherein the puncture core rod is further provided with a limiting groove, the suturing assembly further comprises an inner rod, a limiting post is arranged on the inner rod, and the limiting post can move in the limiting groove.

11. The puncture core assembly of claim 1, wherein the height of the housing space is greater than or equal to the thickness of the subcutaneous tissue of the patient.

12. A puncture instrument comprising the puncture core assembly according to any one of claims 1 to 11, wherein the puncture instrument further comprises a puncture cannula assembly into which the puncture core assembly is extendable.