CN204723113U - Push away wire twister - Google Patents

Abstract

The utility model relates to the field of medical auxiliary technology, in particular to a push knotter, comprising: a sleeve, a push rod can reciprocate in the sleeve, and a drive mechanism is hinged with one end of the push rod to drive the push rod to reciprocate in the sleeve Movement, one end of the push cutter is hinged with the push rod, and can move synchronously with the push rod in the casing. The indenter is hinged on the inner side of the front end of the sleeve, and the side wall of the sleeve is provided with a guide wire hole. The suture can pass through the collet and the guide wire hole in turn to be exported to the outside of the locker. One side, and can be rotated, so that the indenter and the indenter seat cooperate to squeeze the chuck to lock the suture, and at the same time, the push cutter cuts the suture between the chuck and the guide wire hole. The locking device of the utility model has the advantages of simple use method, reliable performance and wide application range, especially for laparoscopic minimally invasive surgery.

Description

push knotter

technical field

The utility model relates to the technical field of medical assistance, in particular to a push knotter.

Background technique

Knotting is one of the most basic techniques of surgery, mainly including locking knots and suture knots. Regardless of the size of the operation, whether the surgical knotting operation is correct and how proficient is not only reflects the basic quality of the surgeon, but also directly relates to the effect of the operation, and even the safety of the patient.

Minimally invasive surgery refers to a new technology that performs surgery in the human body through endoscopes such as laparoscopy and thoracoscopic surgery. Minimally invasive surgery has the advantages of less trauma, less pain and faster recovery. At the same time, new requirements have been put forward for the traditional surgical technique of surgical suture: it is required to suture and tie knots under minimally invasive conditions. The existing knotting technology is basically completed by manual winding, and the knotter is more of an auxiliary knotting function. The disadvantage is that knotting is laborious and laborious, and the knotting effect and success rate depend too much on the operator's proficiency. , but for laparoscopic minimally invasive surgery, the wound is extremely small, it is not feasible to use the traditional manual knotting method, and the knotting with a knotter has a very high risk of detachment at the knotted place.

Utility model content

The technical problem to be solved by the utility model is: in order to solve the ligation of sutures in the laparoscopic minimally invasive operation. Manual suture knotting or knotter suture ligation has a very high risk of knotting at the knotted place, poor knotting fixation effect, and low success rate of surgery. The utility model provides a push knotter, The use method is simple, the performance is reliable, and the application range is wide, especially for laparoscopic minimally invasive surgery.

The technical solution adopted by the utility model to solve the technical problem is: a push knotter, comprising:

casing,

a push rod reciprocating in the bushing,

a driving mechanism, the driving mechanism is hinged to one end of the push rod for driving the push rod to reciprocate in the casing,

push cutter, one end of the push cutter is hinged to the push rod, and can move synchronously with the push rod in the casing,

A pressure head seat, the pressure head seat is provided with a through hole for easy penetration of the chuck, and

indenter,

The indenter seat is fixedly arranged at the front end of the sleeve, the indenter is hinged on the inner side of the front end of the sleeve, the side wall of the sleeve is provided with a guide wire hole between the indenter seat and the indenter, and the suture can be Pass through the collet and the guide wire hole in turn and export to the outside of the locker. The push cutter is slidably set on the side of the indenter away from the indenter seat, and can rotate the indenter under the push of the push rod to make the indenter The cooperation of the head and the pressure head seat squeezes the chuck to lock the suture, and at the same time, the push cutter can cut the suture between the chuck and the guide wire hole under the pushing action of the push rod.

Preferably, the driving mechanism includes a housing and a handle rotatably connected to the housing, the sleeve is fixed at the front end of the housing, and one end of the handle is hinged to the push rod for driving the push rod to reciprocate in the sleeve.

Preferably, a compression spring for restoring the push rod is sheathed on the push rod.

Preferably, the indenter seat also includes a boss for extruding the collet, the indenter is in an inverted S shape, including a head and a tail, and the indenter is hinged to the casing through a rotating shaft at the connection between the head and the tail, The head of the indenter cooperates with the boss of the indenter seat to squeeze the chuck to lock the suture.

Preferably, the indenter seat is further provided with a hemispherical guide head, and the guide head is located at one end of the indenter seat, opposite to the position of the boss. When the knotter with a hemispherical guide head is in use, it can ensure that the front end of the knotter will not cut the tissue, avoiding secondary damage to the patient.

Preferably, the push cutter includes a stamping part and a cutter part, the stamping part is located above the rotating shaft, and is used to push the head of the indenter to move toward the boss of the indenter seat, and the cutter part It is located below the rotating shaft, and when the push cutter moves toward the pressure head seat, the suture thread is cut off between the chuck and the guide wire hole.

Preferably, the stamping part of the pushing knife is T-shaped, including a horizontal part and a vertical part, and the horizontal part is used to push the head of the ram,

The tail of the indenter is provided with a groove, and the plane where the groove is located is perpendicular to the direction of the rotating shaft, so that when the head of the indenter is in contact with the boss of the indenter seat, the vertical part of the stamping part is in the concave position at the tail of the indenter. in the slot.

Preferably, a rolling device for reducing friction between the punching part and the head is provided at the contact position between the punching part and the head of the ram.

Preferably, the rolling device includes a rolling hole arranged in the stamping part, and a ball is arranged in the rolling hole, and the ball is tangent to the head of the indenter and the inner wall of the casing.

The beneficial effects of the utility model are: the push knotter provided by the utility model is simple in use, reliable in performance, high in success rate of knotting, and wide in application range, especially for operations deep inside the body and with small incisions. For example, the knotting of the sutures of heart surgery and lung surgery can make the suture more reliable and the success rate of the operation is high.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the structural representation of push knotter of the present utility model;

Fig. 2 is a three-dimensional structural schematic diagram of an indenter seat;

Fig. 3 is a three-dimensional structural schematic diagram of an indenter;

Fig. 4 is a three-dimensional structural schematic diagram of a push cutter;

Fig. 5 is the three-dimensional structure schematic diagram of collet;

Fig. 6 is the structural representation of threading device;

Fig. 7 is a schematic structural view of the push knotter of the present invention.

In the figure: 1. Sleeve, 2. Push rod, 3. Push cutter, 4. Pressure head seat, 5. Collet, 6. Pressure head, 7. Shell, 8. Handle, 11. Guide wire hole, 21 .Compression spring, 31. Stamping part, 32. Cutter part, 33. Rolling hole, 34. Ball, 41. Through hole, 42. Boss, 43. Guide head, 61. Head, 62. Tail, 63 .rotating shaft, 311. horizontal part, 312. vertical part, 64. groove.

Detailed ways

Now in conjunction with accompanying drawing, the utility model is described in further detail. These drawings are all simplified schematic diagrams, and only schematically illustrate the basic structure of the utility model, so they only show the configurations related to the utility model.

The F direction in the utility model is an upward direction, the direction opposite to the F direction is a downward direction, the E direction is a front direction, and the direction opposite to the E direction is a rear direction.

As shown in Figures 1 to 5, a push knotter includes:

Casing 1,

Push rod 2, push rod 2 can reciprocate in casing 1,

The driving mechanism is hinged with one end of the push rod 2 to drive the push rod 2 to reciprocate in the casing 1,

Push cutter 3, one end of push cutter 3 is hinged with push rod 2, and can move synchronously with push rod 2 in casing 1,

Pressure head seat 4, pressure head seat 4 is provided with the through hole 41 that is convenient to wear collet 5, and

Indenter 6,

The indenter seat 4 is fixedly arranged on the front end of the casing 1, the indenter 6 is hinged on the inner side of the front end of the casing 1, the side wall of the casing 1 is provided with a guide wire hole 11 between the indenter seat 4 and the indenter 6, and the suture can be Pass through the collet 5 and the guide wire hole 11 in turn and export to the outside of the locker. The push cutter 3 is slidably arranged on the side of the indenter 6 away from the indenter seat 4, and can be pushed by the push rod 2 to make the indenter 6 is rotated so that the indenter 6 and the indenter seat 4 cooperate to squeeze the chuck 5 and lock the suture thread. Cut the sutures in between.

In a specific embodiment, the driving mechanism includes a housing 7 and a handle 8 that is rotatably connected to the housing 7. The sleeve 1 is fixed at the front end of the housing 7, and one end of the handle 8 is hinged to the push rod 2 for driving the push rod 2 on the sleeve. 1 reciprocating motion. The driving mechanism can also be other forms of driving mechanism, as long as the push rod 2 completes the reciprocating movement in the casing 1 .

Preferably, a compression spring 21 for restoring the push rod 2 is sheathed on the push rod 2 . It is used for automatically resetting the push rod 2 that completes the knotting work, eliminating the need for manual resetting.

In a specific embodiment, the indenter seat 4 also includes a boss 42 for extruding the collet 5. The indenter 6 is in an inverted S shape, including a head 61 and a tail 62. The indenter 6 passes through the head 61 and the tail. The rotating shaft 63 at the junction of 62 is hinged with the casing 1, and the head 61 of the indenter 6 cooperates with the boss 42 of the indenter seat 4 to squeeze the collet 5 and lock the suture.

In a specific embodiment, as shown in FIG. 7 , the indenter seat 4 is further provided with a hemispherical guide head 43 , and the guide head 43 is located at one end of the indenter seat 4 , opposite to the boss 42 .

In a specific embodiment, the pushing and cutting knife 3 includes a stamping part 31 and a cutting knife part 32. The stamping part 31 is located above the rotating shaft 63 and is used to push the head 61 of the pressing head 6 so that it protrudes toward the pressing head seat 4. The table 42 moves in the direction, and the cutter part 32 is positioned under the rotating shaft 63, so that when the pushing cutter 3 moves in the direction of the indenter seat 4, the suture thread will be cut off between the chuck 5 and the guide wire hole 11.

In a specific embodiment, the stamping part 31 of the pushing knife 3 is T-shaped, including a horizontal part 311 and a vertical part 312, and the horizontal part 311 is used to push the head 61 of the ram 6,

The tail portion 62 of the indenter 6 is provided with a groove 64, and the plane where the groove 64 is located is perpendicular to the direction of the rotating shaft 63, so that when the head 61 of the indenter 6 contacts the boss 42 of the indenter seat 4, the vertical direction of the stamping part 31 The part 312 is in the groove 64 of the tail part 62 of the indenter 6 . At the same time, during the reset process of the push cutter 3, the transverse portion 311 of the push cutter 3 will drive the tail portion 62 of the indenter 6 to restore the indenter 6 to its initial state.

In a specific embodiment, a rolling device that reduces the friction between the punching part 31 and the head 61 is provided at the contact position between the punching part 31 and the head 61 of the ram 6, and the rolling device includes a rolling hole 33 arranged on the punching part 31, A ball 34 is arranged in the rolling hole 33 , and the ball 34 is tangent to the head 61 of the indenter 6 and the inner wall of the casing 1 .

The use process of the push knotter of the present utility model is as follows:

The assistant of the chief surgeon first uses auxiliary tools to merge the surgical lines on both sides of the incision into one strand, first place the chuck 5 as shown in Figure 5 in the through hole 41 of the locking device pressure head seat 4, and pass through as shown in FIG. Fig. 6 threading device passes the suture thread through the central hole of the chuck 5 and the guide wire hole 11, so that the suture thread is placed on one side of the locker. At this time, the doctor holds the locker with one hand and pulls the surgical thread with the other hand, The locking device moves closer and close to the suture of the knife edge. When it is in place, the handle 8 is moved, and the push cutter 3 moves forward to push the indenter 6 to rotate around the rotating shaft 63. The indenter 6 and the boss 42 of the indenter seat 4 cooperate with each other. , clamp the collet 5 flat, and push the cutter 3 to cut off the surgical thread at the same time. When the doctor withdraws the locker and the redundant surgical thread, the compressed collet 5 tightly locks the surgical thread on both sides of the knife edge. The thread, becoming a knot, remained on the incision, closing the wound.

Inspired by the above ideal embodiment according to the utility model, through the above description content, relevant staff can completely make various changes and modifications within the scope of not deviating from the technical idea of the utility model. The technical scope of this utility model is not limited to the content in the description, but must be determined according to the scope of the claims.

Claims (9)

1. A push knotter, characterized in that comprising: Sleeve(1), a push rod (2), the push rod (2) can reciprocate in the casing (1), a driving mechanism, the driving mechanism is hinged to one end of the push rod (2) to drive the push rod (2) to reciprocate in the casing (1), A push cutter (3), one end of the push cutter (3) is hinged to the push rod (2), and can move synchronously with the push rod (2) in the casing (1), Indenter seat (4), described indenter seat (4) is provided with the through hole (41) that is convenient to wear collet (5), and indenter (6), The indenter seat (4) is fixedly arranged at the front end of the casing (1), the indenter (6) is hinged on the inner side of the front end of the casing (1), and the side wall of the casing (1) is located on the indenter A guide wire hole (11) is provided between the seat (4) and the pressure head (6), and the suture can pass through the chuck (5) and the guide wire hole (11) in sequence to be exported to the outside of the locker. The knife (3) is slidably arranged on the side of the pressure head (6) away from the pressure head seat (4), and the pressure head (6) can be rotated under the push of the push rod (2), so that the pressure head (6) and The indenter seat (4) cooperates to squeeze the chuck (5) to lock the suture thread. Cut the sutures between the holes (11). 2. The push knotter according to claim 1, characterized in that: the drive mechanism comprises a housing (7) and a handle (8) rotatably connected to the housing (7), and the sleeve (1) Fixed on the front end of the housing (7), one end of the handle (8) is hinged to the push rod (2) for driving the push rod (2) to reciprocate in the casing (1). 3. The push knotter according to claim 2, characterized in that: the push rod (2) is sheathed with a compression spring (21) for resetting the push rod (2). 4. The push knotter according to claim 1, characterized in that: the pressure head seat (4) also includes a boss (42) for squeezing the chuck (5), and the pressure head (6) It is an inverted S shape, including a head (61) and a tail (62), and the indenter (6) is hinged to the casing (1) through a rotating shaft (63) at the junction of the head (61) and the tail (62). The head (61) of the indenter (6) cooperates with the boss (42) of the indenter seat (4) to squeeze the collet (5) and lock the suture. 5. The push knotter according to claim 4, characterized in that: the head seat (4) is also provided with a hemispherical guide head (43), and the guide head (43) is located on the head seat One end of (4) is opposite to the position of the boss (42). 6. The push knotter according to claim 4, characterized in that: the push cutter (3) includes a stamping part (31) and a cutter part (32), and the stamping part (31) is located on the rotating shaft ( 63) above, used to push the head (61) of the indenter (6) to move towards the boss (42) of the indenter seat (4), the cutter part (32) is located on the rotating shaft (63) When the push cutter (3) is moved towards the direction of the pressure head seat (4), the suture thread will be cut off between the chuck (5) and the guide wire hole (11). 7. The push knotter as claimed in claim 6, characterized in that: The stamping part (31) of the push cutter (3) is T-shaped, including a horizontal part (311) and a vertical part (312), and the horizontal part (311) is used to push the head of the ram (6) (61), The afterbody (62) of described indenter (6) is provided with groove (64), and the plane of groove (64) place is perpendicular to the direction of rotating shaft (63), makes the head (61) of indenter (6) and When the boss (42) of the indenter seat (4) contacts, the vertical part (312) of the stamping part (31) is in the groove (64) of the tail (62) of the indenter (6). 8. The push knotter according to claim 6 or 7, characterized in that a reduced punching portion (31) is provided at the contact position between the punching portion (31) and the head (61) of the indenter (6) A rolling device that rubs against the head (61). 9. The push knotter according to claim 8, characterized in that: the rolling device comprises a rolling hole (33) arranged in the stamping part (31), and a ball (34) is arranged in the rolling hole (33) ), the ball (34) is tangent to the head (61) of the pressure head (6) and the inner wall of the sleeve (1).