CN109793556B - Height adjusting device - Google Patents

Abstract

The invention discloses a height adjusting device, which is used for adjusting the height of an accommodating space between a first part and a second part, and comprises a knob and a disc, wherein the knob can rotate relative to the disc; the knob can rotate relative to the first component, and the disc is fixedly connected with the second component; the second part can move relative to the first part to form an accommodating space, and the knob can rotate relative to the disc and drive the disc to move, so that the second part is driven to move relative to the first part, and the height of the accommodating space is adjusted. According to the height adjusting device of the present invention, it is possible to adjust a desired suturing height and fix the height according to individual differences of target tissues to effectively suture the target tissues.

Description

Height adjusting device

Technical Field

The invention relates to a surgical instrument, in particular to a height adjusting device, 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. The puncture core component of the existing puncture outfit only plays a role in puncturing, a puncture hole cannot be sutured, the puncture sleeve is guided to enter the body of a patient from an incision on the abdomen of the human body and then discarded, and if the puncture hole needs to be sutured, a special suturing instrument needs to be reused. When the puncture holes of patients need to be sutured, especially the puncture holes of fat patients, only a suturing device special for suturing the puncture holes can be used, but surgical instruments are additionally added, the suturing cost is high, the surgical instruments are multiple, and the 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 height adjusting device for adjusting and fixing the height of an accommodating space between a first part and a second part comprises a knob and a disk, wherein the knob can rotate relative to the disk; the knob can rotate relative to the first component, and the disc is fixedly connected with the second component and can move along the first component; the second part can move relative to the first part to form an accommodating space, and the knob can rotate relative to the disc and drive the disc to move, so that the second part is driven to move relative to the first part, and the height of the accommodating space is adjusted.

Preferably, the knob is provided with an internal thread, the disc is provided with a protrusion, the height of the protrusion is smaller than the thread pitch of the internal thread, and the internal thread is matched with the protrusion.

Preferably, the protrusion is an external thread.

Preferably, the length of the external thread is smaller than the length of the internal thread.

Preferably, the knob rotates along a first direction to drive the disc to move downwards; the knob rotates along a second direction to drive the disc to move upwards, and the first direction is opposite to the second direction.

Preferably, the first direction is a clockwise direction and the second direction is a counterclockwise direction.

Preferably, the disc is provided with at least one positioning hole, the first component is provided with at least one positioning column, the positioning column is located in the positioning hole, and the disc can move along the positioning column of the first component.

Preferably, four positioning holes are formed in the disc, and four positioning columns are arranged on the first component.

Preferably, the knob is made of transparent material or semitransparent material.

Preferably, the material of the knob is PC or ABS.

Preferably, the knob includes a first stroke and a second stroke, the first stroke is a stroke for adjusting the height of the accommodating space, and the second stroke is a stroke for driving one end of the suture thread to move continuously by the height adjusting device after the one end of the suture thread passes through the tissue in the accommodating space.

Preferably, the knob has at least two designations: the first mark represents a stroke for adjusting the height of the accommodating space, and the second mark represents a stroke for driving the one end of the suture line to move continuously.

Preferably, the outer surface of the knob is also provided with anti-skid grains.

According to the height adjusting device, the puncture hole is sutured in a narrow puncture hole, the suturing height can be adjusted according to the individual difference of target tissues, so that the target tissues are sutured effectively, and the puncture hole hernia caused by the puncture hole of the minimally invasive surgery is avoided.

Drawings

FIG. 1 is a schematic structural view of a piercing core assembly according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a piercing core assembly according to an embodiment of the present invention;

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

figure 4 is a schematic structural view of a first inner rod according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a second inner rod according to an embodiment of the invention;

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

FIG. 7 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. 8 is a schematic structural view of an initial state of the piercing core assembly according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of the puncture core assembly after forming a suture space in accordance with an embodiment of the present invention;

FIG. 10 is a schematic representation of the configuration of the puncture core assembly upon suturing in accordance with an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a knob according to an embodiment of the present invention;

FIG. 12 is a schematic representation of a post-suture configuration of a piercing core assembly in accordance with an embodiment of the present invention;

fig. 13 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 "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

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 assembly 200 of the embodiment of the present invention includes a puncture assembly, a suture assembly, and an adjusting unit. The puncture assembly comprises a puncture end 1 and a puncture rod body 2. The puncture core assembly 200 is an adjusting unit, a suture assembly and a puncture rod body 2 from inside to outside in sequence. The suture component is positioned in the puncture rod body 2, and at least one part of the suture component can move in the puncture rod body 2; the suturing member is located in the puncture rod body 2, which means the positional relationship between the suturing member and the puncture rod body 2, and not all the components of the suturing member are located in the puncture rod body 2. For convenience of description and simplicity of description, in embodiments of the present invention, the end closer to the clinician is designated as "proximal" or "above", and the end further from the clinician, i.e., the end closer to the patient, is designated as "distal" or "below". Based on the orientation or position relationship shown in fig. 1, one end close to the knob 5 is regarded as "proximal end" or "upper", and one end close to the puncture end 1 is regarded as "distal end" or "lower"; the axial direction of the puncture core assembly 200 is referred to as the "height" direction, and the radial direction of the puncture core assembly 200 is referred to as the "width" direction; the direction toward the center axis of the knob 5 is referred to as "inside", and the direction away from the center axis of the knob 5 is referred to as "outside".

As shown in fig. 1, the puncture core assembly 200 includes a puncture rod body 2, a puncture tip 1 disposed at a distal end of the puncture rod body 2, and a knob 5 disposed at a proximal end of the puncture rod body 2. Fig. 2 depicts the composition and assembled relationship of the piercing core assembly 200. The puncture core assembly 200 further comprises a first inner rod assembly 3 and a second inner rod assembly 4; the puncture core assembly 200 comprises a second inner rod assembly 4, a first inner rod assembly 3 and a puncture rod assembly 100 from inside to outside in sequence. At least a portion of the second inner rod assembly 4 is located within the first inner rod assembly 3, and at least a portion of the first inner rod assembly 3 is located within the puncture rod assembly 100; and the central axis of the second inner rod component 4, the central axis of the first inner rod component 3 and the central axis of the puncture rod body 2 are all coincided.

Referring to fig. 3, the puncture rod assembly 100 includes a puncture rod body 2, and a cap 6 engaged with the puncture rod body 2. The puncture rod body 2 comprises a suture channel 23 which is penetrated up and down, and the first inner rod assembly 3 is positioned in the suture channel 23 and can move up and down relative to the suture channel 23. The proximal end of the puncture rod body 2 is provided with a fixed disk 25 formed by extending along the radial direction of the puncture rod body, the proximal end of the fixed disk 25 comprises at least two positioning columns 24, the positioning columns 24 are uniformly distributed on the fixed disk 25, and the proximal ends of the positioning columns 24 are provided with grooves 241. The puncture rod assembly 100 further comprises a top cover 6 fixedly connected with the fixed disk 25, and the knob 5 is positioned between the top cover 6 and the fixed disk 25. The top cover 6 is substantially circular. The bottom surface of the top cover 6 comprises at least two positioning protrusions 61, and the positioning protrusions 61 are matched with the grooves 241 of the positioning columns 24 one by one; the center of the top cover 6 forms a stitched key channel 62, and the stitched key channel 62 communicates with the stitched channel 23. A stop 26 is provided on the inner peripheral wall of the distal end of the puncture rod assembly 100 to allow the size of the suture channel 23 at the distal end of the puncture rod assembly 100 to be smaller than the diameter of the rest of the suture channel 23. The distal end of the puncture rod body 2 is symmetrically provided with a U-shaped groove 22 for accommodating the suture needle 7. The lower end of the U-shaped groove 22 extends to the lower end of the puncture rod body 2, and the length of the U-shaped groove 22 is equal to or slightly greater than the length of the suture needle 7.

Referring to fig. 4 or 2, the first inner rod assembly 3 includes a first inner rod body 30 and a suture key 31, a cavity 32 penetrating up and down is formed inside the first inner rod body 30, and a second inner rod body 40 of the second inner rod assembly 4 is located inside the cavity 32 and can move up and down inside the cavity 32. At least one connecting column 34 is formed at the proximal end of the first inner rod body 30 along the axial extension thereof, preferably, two connecting columns 34 are symmetrically formed at the proximal end of the first inner rod body 30, correspondingly, the disc 42 of the second inner rod assembly 4 comprises two through holes 48, and the connecting columns 34 are fixedly connected with the suture key 31 after passing through the through holes 48 of the disc 42. When the suture key 31 is pressed, the first inner lever assembly 3 moves downward. The distal end symmetry of first interior pole body 30 is equipped with the first installation department 33 of mutually supporting with suture needle 7, stretch into puncture rod subassembly 100 with first interior pole subassembly 3 the distal end back, adjust first interior pole subassembly 3 and make its first installation department 33 aim at puncture rod body 2's U-shaped groove 22, so that follow U-shaped groove 22 with suture needle 7 with first installation department 33 interference fit or transition fit, two suture needles 7 are accomodate respectively in puncture rod body 2 distal end's U-shaped groove 22 with first interior pole body 30 fixed connection back. The distal end of the spring 35 abuts against the stopper 26 at the distal end of the puncture rod body 2, and the proximal end thereof abuts against the distal end of the first inner rod body 30. The suture anchor 8 is detachably attached to the distal end of the needle 7, and the suture anchor 8 is omitted from FIG. 4 for clarity of the needle 7.

As shown in fig. 5, the second inner rod assembly 4 includes a second inner rod body 40 and a connecting rod 45, a proximal end of the second inner rod body 40 extends along a radial direction thereof to form a circular disc 42, a distal end of the second inner rod body 40 is integrally formed or fixedly connected with a proximal end of the connecting rod 45, and a distal end of the connecting rod 45 is fixedly connected with a proximal end of the puncture tip 1. 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 rod body 2 is a hollow round tube, the diameters of the puncture rod body 2 from the proximal end to the distal end are the same, and the maximum diameter of the puncture end 1 is approximately equal to the diameter of the puncture rod body 2. The connecting rod 45 is further provided with an outward convex stepped part 46, the diameter of the stepped part 46 is larger than that of the part of the connecting rod 45 except the stepped part 46, and the inner peripheral wall of the far end of the puncture rod body 2 is further provided with a limiting block 26, so that the size of the suture channel 23 at the far end of the puncture rod assembly 100 is smaller than that of the rest part of the suture channel 23. The limiting block 26 can allow the connecting rod 45 to move up and down from the inner cavity of the limiting block 26, and when the connecting rod 45 moves to the step portion 46 and abuts against the limiting block 26, the limiting block 26 prevents the step portion 46 from continuing to move down because the inner diameter of the limiting block 26 is smaller than the diameter of the step portion 46. The connecting rod 45 between the puncture tip 1 and the step part 46 is a cylinder or a cuboid, when the connecting rod is a cylinder, the diameter of the connecting rod is smaller than that of the puncture rod body 2, and the cross-sectional area of the connecting rod is smaller than that of the puncture rod body 2, so that a space is formed between the puncture tip 1 and the puncture rod body 2; when the puncture rod is a cuboid, the width and the length of the puncture rod are both smaller than the diameter of the puncture rod body 2. On the premise of meeting the required strength, the smaller the cross-sectional area of the connecting rod 45 between the puncture tip 1 and the step portion 46 is, the better, so that the accommodating space formed between the proximal end of the puncture tip 1 and the distal end of the puncture rod body 2 is larger. Further, the central axis of the connecting rod 45 coincides with the central axis of the puncture rod body 2. The distance that the puncture tip 1 can move relative to the distal end of the puncture rod body 2 is greater than or equal to the thickness of the subcutaneous tissue of the patient.

The proximal end of the second inner rod body 40 extends radially to form a disc 42, a protrusion is arranged on the outer peripheral wall of the disc 42, referring to fig. 2 or 11 again, the knob 5 is a hollow cylinder, an internal thread 51 is arranged on the inner surface of the knob, the height of the protrusion is smaller than the pitch of the internal thread 51 of the knob 5, and the protrusion is matched with the internal thread 51. Preferably, the protrusion is an external thread 43; the length of the external thread 43 is smaller than the length of the internal thread 51 of the knob 5. The proximal end of the knob 5 is clearance fit with the top cover 6, the distal end of the knob 5 is clearance fit with the fixed disk 25, and the vertical distance from the top cover 6 to the fixed disk 25 is equal to the height of the knob 5, so that the knob 5 is limited between the top cover 6 and the fixed disk 25, and the knob 5 can only rotate and rotate between the top cover 6 and the fixed disk 25 and can not move up and down between the top cover 6 and the fixed disk 25.

The adjusting unit comprises a knob 5 and a disc 42, wherein the external thread 43 of the disc 42 is matched with the internal thread 51 of the knob 5, and the disc 42 can move between the proximal end and the distal end of the knob 5 by rotating the knob 5, so that the second inner rod assembly 4 is driven to move up and down relative to the puncture rod assembly 100. The disc 42 further includes positioning holes 44 and through holes 48 penetrating up and down, and in the embodiment of the present invention, preferably, four positioning holes 44 are provided on the disc 42, and correspondingly, the proximal end of the fixed disc 21 includes four positioning pillars 24.

Referring to fig. 3 to 5, the proximal end of the puncture rod body 2 is provided with a first limiting groove 21, the proximal end of the first inner rod body 30 is provided with a second limiting groove 36, the first limiting groove 21 and the second limiting groove 36 are corresponding in position and equal in width, and the length of the second limiting groove 36 is not less than the length of the first limiting groove 21. The second inner rod body 40 further comprises a limiting column 47, which is used for being matched with the first limiting groove 21 and the second limiting groove 36, and the diameter of the limiting column 47 is slightly smaller than the width of the first limiting groove 21, so that the limiting column 47 can only move up and down in the first limiting groove 21 and the second limiting groove 36 and cannot rotate circumferentially, and the second inner rod assembly 4 can only move up and down in the puncture rod body 2; the stroke of the limit column 47 moving up and down is limited by the length of the first limit groove 21, and further the stroke of the second inner rod assembly 4 moving in the puncture rod body 2 is limited.

The suture assembly comprises a suture needle 7 and a suture line fixing block 8, the suture needle 7 and the suture line fixing block 8 are detachably connected, and one end of a suture line 9 penetrates through tissues in the accommodating space through the connected suture needle 7 and the suture line fixing block 8 through movement. As shown in FIG. 6, the suture needle 7 includes a second mounting portion 71 and a needle tip 72. The suture needles 7 are fixedly connected with the first mounting part 33 of the first inner rod body 30 through interference fit or transition fit of the second mounting part 71, and the distance between the two suture needles 7 is equal to or slightly smaller than the diameter of the puncture rod body 2. Referring to fig. 7, the suture fixing block 8 includes a suture needle channel 82 disposed vertically therethrough for connecting with the suture needle 7, the needle tip 72 passes through the suture needle channel 82 and is exposed from the suture needle channel 82, and the needle tip 72 is connected with the suture needle channel 82 in a clearance fit manner; the side wall of the suture fixing block 8 is provided with a winding groove 81, the tail 91 of the suture 9 is wound on the winding groove 81 and forms a knot at the winding groove 81, two tail 91 of the suture 9 are respectively matched with one suture fixing block 8, and the proximal end 92 of the suture 9 is hung on the limiting column 47 of the second inner rod 4 along the outer wall of the puncture rod body 2; if there is an excess of suture 9, a slip knot can be formed at the suture after it is pulled tight, so as to prevent the suture 9 from falling between the puncture rod body 2 and the inner rod 5. Referring to fig. 2 or 5 again, the puncture end 1 is provided with an accommodating 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 mounting groove of storage tank 11 for with 8 profile modeling adaptations of stylolite fixed block, like this, after stylolite fixed block 8 got into storage tank 11, stylolite fixed block 8's surface and storage tank 11 laminated completely, and it is more firm to connect. Further, the size of the outer periphery of the puncture end 1 close to the accommodating groove 11 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.

The tail 91 of the suture 9 is wound on the winding groove 81 and forms a knot at the position of the wire groove 81, after two tail 91 of the suture 9 are respectively matched with one suture fixing block 8, the suture fixing block 8 is arranged on the needle point 72 of the suture needle 7, the needle point 72 is exposed out of the suture fixing block 8, the suture needle 7 and the suture fixing block 8 are arranged in the U-shaped groove 22, and the length of the U-shaped groove 22 is equal to or slightly greater than that of the suture needle 7; and the outer surfaces of the suture needles 7 and the suture line fixing blocks 8 do not exceed the outer surface of the puncture rod body 2, so that the suture needles 7 are far away from the puncture hole during suture, and the distance between the two suture needles 7 is equal to or slightly smaller than the diameter of the puncture rod body 2, thereby ensuring that the maximum suture range is provided on the premise of not enlarging the puncture hole.

During operation, after pneumoperitoneum is finished, a doctor firstly cuts a small incision on the abdomen of a patient, and then the puncture end 1 of the puncture outfit 1000 is aligned with the cut small incision to rotate left and right in a reciprocating manner and simultaneously moves the puncture outfit 1000 downwards until the cannula assembly 300 passes through the cortex of the abdomen of the patient; during puncture, the disc 42 is positioned at the near end of the knob 5, and the near end of the puncture end 1 is abutted against the far end of the puncture rod body 2, so that no gap exists between the puncture end 1 and the puncture rod body 2, and tissues of a patient cannot be clamped during puncture. Following withdrawal of the puncture core assembly 200, a stapler or other surgical instrument may be advanced into and out of the patient's abdominal cavity through the puncture cannula assembly 300 for a surgical procedure.

After the intra-abdominal procedure is completed, the puncture core assembly 200 of the present embodiment is reinserted into the patient through the cannula assembly 300. in order to clearly show the mutual fit of the components of the puncture core assembly 200, the cannula assembly 300 is omitted from fig. 8-10. Referring to fig. 8, during puncturing, the disc 42 is located at the proximal end of the knob 5, and the proximal end of the puncturing end 1 abuts against the distal end of the puncturing rod body 2, so that no gap exists between the puncturing end 1 and the puncturing rod body 2, and the tissue of the patient is not clamped during puncturing.

After the piercing end 1 of the piercing core assembly 200 reaches the target position, as shown in fig. 9, the knob 5 is rotated in the first direction, preferably, the knob 5 is rotated in the clockwise direction, the external threads 43 of the disk 42 are engaged with the internal threads 51 of the knob 5, and the disk 42 can only move up and down but cannot rotate because the positioning hole 44 of the disk 42 is constrained by the positioning column 24 of the fixed disk 21. Thus, when the knob 5 is rotated clockwise, under the constraint of the positioning column 24, the external thread 43 and the internal thread 51 are matched with each other to drive the disc 42 to move downwards, and simultaneously drive the second inner rod body 40 and the puncture end 1 to move downwards, so that an accommodating space is formed between the puncture end 1 and the puncture rod body 2. When the height of the suture space needs to be increased, the knob 5 is continuously rotated clockwise; when the height of the suture space needs to be reduced, the knob 5 is rotated anticlockwise, the internal thread 51 of the knob 5 is matched with the external thread 43 of the disc 42, so that the disc 42 moves upwards, the second inner rod body 40 and the puncture end 1 are driven to move upwards, and the suture space between the puncture end 1 and the puncture rod body 2 is reduced. The outer surface of the knob 5 is provided with anti-slip lines 52 to increase friction force, play an anti-slip role and facilitate the rotation adjustment of the height of the accommodating space.

When the required accommodating space is reached to obtain the required height, the clamping surface at the near end of the puncture end 1 is contacted with the subcutaneous tissue bottom layer of the patient. Due to the elasticity of human tissue, the tissue at the puncture hole of the patient can be filled in the suture space, namely, the tissue at the puncture hole of the patient wraps the connecting rod 45 and fills the space between the near end of the puncture end 1 and the far end of the puncture rod body 2. Next, the suture key 31 is pressed downward, the suture key 31 sequentially pushes the first inner rod body 30, the suture needles 7 and the suture line fixing block 8 to move downward, the needle points 72 of the two suture needles 7 respectively guide the suture line fixing block 8, and further drive the two end tails 91 of the suture lines 9 to move downward, and the state after pressing the suture key 31 is as shown in fig. 10.

In order to facilitate the observation of the position of the disc 42, according to one embodiment of the present invention, the knob 5 is made of a transparent material or a semitransparent material, and preferably, the knob 5 is made of PC or ABS. The outer surface of the knob 5 is also provided with a mark, as shown in fig. 11, the vertical height from the proximal end of the knob 5 to the mark N is the maximum value of the thickness of the subcutaneous tissue F, and the vertical height from the proximal end of the knob 5 to the mark M is the average value of the thickness of the subcutaneous tissue F; the stroke smaller than the stroke shown by the point N, i.e. the stroke of the disc 42 moving from the initial position to the point N, is used for adjusting the height of the accommodating space. A stroke greater than the sign shown by sign N, i.e., a stroke of movement of disc 42 from sign N to the distal end of knob 5, serves to increase the travel distance of suture 9, facilitating the pulling of the suture; for target tissues less than the maximum value of the thickness of the subcutaneous tissue F, the travel of marker M to marker N also serves to increase the travel distance of the suture 9, further facilitating the pulling out of the suture. According to another embodiment of the present invention, the knob 5 may also be made of opaque material, and the peripheral wall of the knob 5 is provided with at least one longitudinal groove; or the top cover 6 is provided with at least one notch; or the peripheral wall of the knob 5 is provided with at least one longitudinal slot, while the top cover 6 is provided with at least one notch, so as to facilitate the observation of the position of the disc 42 from said longitudinal slot and/or said notch.

Specifically, referring to fig. 12, after the two end tails 91 of the suture thread 9 penetrate the subcutaneous tissue F from D, C at two points, the knob 5 is rotated clockwise again, because the suture fixing block 8 has been inserted into the accommodating groove 11 of the puncture tip 1, and the tails 91 are wound around the winding grooves 81 of the suture fixing block 8 and form knots at the winding grooves 81, and then the tails 91 of the suture thread 9 are further moved into the abdominal cavity by a stroke through the adjusting unit, wherein the stroke is greater than the thickness of the subcutaneous tissue F, so as to compensate the thickness of the subcutaneous tissue F even including the dermis and epidermis, and the stroke of the further movement enables the tails 91 to be pulled out of the subcutaneous tissue F even from the abdominal wall when being turned to move upwards, and simultaneously enables the distal end of the suture thread 9 to gradually enter the patient. When the height of the accommodating space reaches the maximum, the disc 42 moves to the far end of the knob 5, and the connecting rod 45 moves to the step portion 46 to abut against the limiting block 26.

When the suture fixing block 8 is fixed in the accommodating groove 11 on the puncture end 1 (i.e. indicating that the suture needle 7 has completely punctured the subcutaneous tissue of the patient), the suture key 31 is released, because the distal end of the spring 35 abuts against the limiting block 26 at the distal end of the puncture rod body 2, the proximal end of the spring 35 abuts against the distal end of the first inner rod body 30, the spring 35 is released and extends, the elastic restoring force of the spring 35 pushes the first inner rod assembly 3 to move upwards, the first inner rod body 30 drives the suture needle 7 to move upwards, and because the clamping surface at the proximal end of the puncture end 1 is positioned below the subcutaneous tissue of the patient, the tissue of the patient prevents the clamping surface at the proximal end of the puncture end 1 from moving upwards, and further prevents the puncture end 1 from moving upwards; because the suture line fixing block 8 is in interference fit with the accommodating groove 11 of the puncture end 1, the suture line fixing block 8 is difficult to separate from the accommodating groove 11 after the suture line fixing block is matched with the accommodating groove 11, and the suture needle 7 is in clearance fit with the suture line fixing block 8; therefore, after the suture key 31 is released, the first inner rod body 30 drives the suture needle 7 to separate from the suture fixing block 8, the suture needle 7 is retracted to the U-shaped groove 22 at the distal end of the puncture rod body 2, and the suture fixing block 8 is located in the accommodating groove 11 of the puncture end 1. Preferably, the suture key 31 is further provided with a handle 37, when the suture fixing block 8 is fixed in the accommodating groove 11 of the puncture tip 1, the handle 37 can be pulled upwards to pull the suture key 31 to move upwards, so that the first inner rod body 30 drives the suture needle 7 to separate from the suture fixing block 8, the suture needle 7 is retracted into the U-shaped groove 22 at the distal end of the puncture rod body 2, and the suture fixing block 8 is located in the accommodating groove 11 of the puncture tip 1

FIG. 12 illustrates a process by which target tissue is sutured, in accordance with an embodiment of the present invention. The skin of a human body is sequentially provided with a skin layer, a dermis layer and a subcutaneous tissue from outside to inside, and as long as the subcutaneous tissue F layer at the lowest layer of the puncture hole of a patient is sutured, the puncture hole cannot be opened, the skin layer and the dermis layer are easy to automatically heal, and the hernia of the puncture hole can be effectively prevented; preferably, the epidermal layer E or the dermal layer of the puncture hole of the patient is tied off, so that the thread knot is positioned in the puncture hole and the skin of the patient is not exposed, thereby preventing the thread knot from being touched after the operation, preventing the puncture hole from opening because the subcutaneous tissue of the patient is sutured, and facilitating the automatic healing of the epidermal layer or the dermal layer. Preferably, the suture 9 is a human absorbable suture. The knot formed at the stop post 47 at the proximal end 92 of the suture 9 is undone and the proximal end 92 of the suture 9 is free. The needle points 72 of the two suture needles 7 respectively guide the suture line fixing block 8, further drive the two end line tails 91 of the suture line 9 to gradually contact and pierce through tissues in a space formed by the puncture end 1 and the puncture rod body 2 from A, B two points of subcutaneous tissues F respectively, guide the suture line fixing block 8 to be installed in the accommodating groove 11 on the puncture end 1, and respectively lead the two end line tails 91 of the suture line 9 to pierce through the subcutaneous tissues F from D, C two points. Since the tail 91 of the suture 9 is previously knotted at the winding groove 81, the suture fixing block 8 introduces the tail 91 of the suture 9 under the subcutaneous tissue of the patient. Through the knob 5 at the stroke of sign M to the knob 5 distal end or sign N to the knob 5 distal end, rotatory knob 5 makes disc 42 move down to drive second interior pole subassembly 4 and puncture end 1 downstream simultaneously, because of the suture fixed block 8 is fixed in the storage tank 11 of puncture end 1, thereby make the both ends line tail 91 of the suture 9 of winding on suture fixed block 8 continue the downstream, and then the near-end 92 of suture 9 gets into the patient in vivo and contacts with subcutaneous tissue.

Holding knob 5 and upwards moving puncture core subassembly 200, puncture rod body 2, connecting rod 45, puncture end 1 breaks away from the patient's is internal, stylolite fixed block 8 and puncture end 1's storage tank 11 fixed connection, puncture end 1 breaks away from the patient's is internal with stylolite fixed block 8 together, because of stylolite 9's line tail 91 is connected with stylolite fixed block 8, stylolite 9's line tail 91 is located the below of patient's subcutaneous tissue, in the in-process that puncture end 1 left the patient internal, stylolite 9's two line tails 91 upwards remove from puncture hole, thereby be convenient for pull out the abdominal cavity with stylolite 91 through puncture end 1. 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 then the redundant suture thread 9 is removed, thereby completing the suture of the puncture hole. 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 200 as described above, the present invention further provides a puncture device 1000, referring to fig. 13, the puncture device 1000 further comprises a cannula assembly 300, during puncturing, the puncture core assembly 200 is inserted into the puncture cannula assembly 300, and the cannula assembly 300 is guided into the abdominal cavity of the patient, so that other surgical instruments can enter the body of the patient for performing a surgical operation, and after the cutting and suturing operation is completed, the puncture device 1000 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 suture of the puncture hole can be realized in the narrow puncture hole, the suture height can be adjusted according to the individual difference of the target tissue, and the suture effect is good; the puncture core assembly and the puncture outfit with the puncture core assembly can effectively avoid puncture hole hernia caused by a puncture hole of a minimally invasive surgery, and the puncture core assembly and the puncture outfit with the puncture core assembly can form a suture space between a puncture end and a puncture rod during puncture, can not scratch a wound of a patient during puncture, effectively reduce pain of the patient and are beneficial to 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 (13)

1. A height adjusting device is used for adjusting the height of an accommodating space between a first part and a second part of a puncture core assembly, and is characterized in that the first part is a puncture rod body, the second part is a puncture end, the height adjusting device comprises a knob and a disc, and the knob can rotate relative to the disc; the knob can rotate relative to the first component, and the disc is fixedly connected with the second component and can move along the first component;

the second part can move relative to the first part to form an accommodating space, and the knob can rotate relative to the disc and drive the disc to move, so that the second part is driven to move relative to the first part, and the height of the accommodating space is adjusted.

2. The height adjusting device of claim 1, wherein the knob is provided with an internal thread, the disc is provided with a protrusion, the height of the protrusion is smaller than the pitch of the internal thread, and the internal thread is matched with the protrusion.

3. The height adjustment device of claim 2, wherein the protrusion is externally threaded.

4. The height adjustment device of claim 3, wherein the length of the external thread is less than the length of the internal thread.

5. The height adjustment device of claim 1, wherein rotation of the knob in a first direction moves the disk downward; the knob rotates along a second direction to drive the disc to move upwards, and the first direction is opposite to the second direction.

6. The height adjustment device of claim 5, wherein the first direction is clockwise and the second direction is counterclockwise.

7. A height adjustment device as claimed in claim 1, wherein the disc is provided with at least one locating hole, the first part is provided with at least one locating post, the locating post is located in the locating hole, and the disc is movable along the locating post of the first part.

8. The height adjustment device of claim 7, wherein four positioning holes are provided on the disk, and four positioning posts are provided on the first member.

9. The height adjustment device of claim 1, wherein the knob is a transparent material or a translucent material.

10. The height adjustment device of claim 9, wherein the knob is made of PC or ABS.

11. The height adjustment device of claim 1 or 9, wherein the knob includes a first stroke and a second stroke, the first stroke being a stroke for adjusting the height of the receiving space, the second stroke being a stroke for the height adjustment device to move the end of the suture further after the end of the suture passes through the tissue in the receiving space.

12. The height adjustment device of claim 11, wherein the knob has at least two markings: the first mark represents a stroke for adjusting the height of the accommodating space, and the second mark represents a stroke for driving the one end of the suture line to move continuously.

13. The height adjustment device of claim 1, wherein the outer surface of the knob is further provided with anti-slip threads.

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