CN219048644U - Minimally invasive surgery stay cord control handle - Google Patents

Abstract

The application discloses a minimally invasive surgery stay cord control handle, which comprises a shell, an inner shaft, and a fixed side branch and a stay wire side branch which are arranged on the inner shaft; the inner shaft is axially and freely movably arranged in the shell; the fixed side branch comprises a fixed side branch outer sleeve and a fixed side branch wire pulling column, a supporting spring is arranged between the fixed side branch wire pulling column and an inner cavity of the fixed side branch outer sleeve, and the hollow part and the top part of the fixed side branch wire pulling column are provided with a pull rope inlet; the internal shaft is connected with a stay wire side branch, the stay wire side branch comprises a stay wire side branch outer sleeve, a stay wire side branch stay wire column and a side branch knob, and the side branch knob controls the movement of the stay wire side branch stay wire column; the hollow and top of the stay wire side branch stay wire column is provided with a stay wire outlet. The stay cord penetrates from the stay cord entry, stretches out control handle from the shell front end and gets into the pipe, extends into the patient along the pipe, returns the pipe after connecting the apparatus, stretches out the stay cord export in the shell back to, and in the operation process, the stay cord keeps pretension under the support spring effect, can improve the operation precision.

Description

Minimally invasive surgery stay cord control handle

Technical Field

The application relates to a minimally invasive surgery stay cord control handle, belongs to medical instrument technical field.

Background

Currently, in surgery, complex, multi-control point small implantation (intervention) instruments are commonly used; by virtue of the great advantages of small wound surface and low exposure risk, the application scene of the minimally invasive technology in clinic is rapidly expanded; with the wide application of small-sized implantation (intervention) instruments, a plurality of small-sized implantation (intervention) instruments may need to be controlled by manipulating a plurality of control points clinically, and under a minimally invasive environment, on one hand, the plurality of control points are individually complicated to operate and difficult to accurately control and maintain in vitro, and on the other hand, a pull rope for controlling the small-sized implantation (intervention) instruments is easy to loosen due to a longer scale, so that the operation accuracy is greatly reduced.

Disclosure of Invention

The technical problem to be solved by the application is to control the stay cord of a small implantation (intervention) instrument to be easy to loosen due to longer scale, so that the operation precision is greatly reduced.

In order to solve the technical problems, the technical scheme of the application is to provide a minimally invasive surgery stay cord control handle, which comprises a shell, an inner shaft, and a fixed side branch and a stay wire side branch which are arranged on the inner shaft; the inner shaft is axially and freely movably arranged in the shell; the fixed side branch comprises a fixed side branch outer sleeve, a fixed side branch wire pulling column is arranged in the fixed side branch outer sleeve, a supporting spring which tends to drive the fixed side branch wire pulling column outwards is arranged between the fixed side branch wire pulling column and an inner cavity of the fixed side branch outer sleeve, and a stay rope inlet position is arranged at the hollow and top part of the fixed side branch wire pulling column; the side branch of the stay wire comprises a side branch outer sleeve of the stay wire, a side branch knob is arranged on the side branch outer sleeve of the stay wire, an internal thread is arranged on the inner wall of the side branch knob, a side branch stay wire column of the stay wire is arranged in the inner cavity of the side branch outer sleeve of the stay wire, and the outer wall of the side branch stay wire column of the stay wire is in threaded connection with the side branch knob; the stay wire side branch stay wire column is hollow, and the top is provided with a stay wire outlet position. The stay cord penetrates from the stay cord entry, stretches out control handle from the shell front end and gets into the pipe, extends into the patient's body along the pipe, walks around and connects the motion portion of small-size implantation (intervention) instrument, returns the pipe afterwards, returns in the shell, stretches out the stay cord export.

Preferably, the inner shaft is sleeved with a moving cylinder which freely slides along the inner shaft, and the fixed side branch is arranged on the moving cylinder. Further, an adjusting knob for limiting axial movement is arranged on the shell, an internal thread is arranged on the adjusting knob, a matched external thread is arranged on the moving cylinder, and rotation of the adjusting knob is converted into axial linear movement of the moving cylinder relative to the internal shaft through thread transmission. The internal thread of the adjusting knob is meshed with the external thread of the moving cylinder, and the linear movement of the moving cylinder is converted through the rotation of the adjusting knob, so that the forward and backward movement of the moving cylinder can be controlled more conveniently and accurately.

The fixed side branch stay wire column and/or the stay wire side branch stay wire column are/is provided with a nut used for pressing and fixing the stay wire at the inlet of the stay wire. The stay cord penetrates from the stay cord entry, can use the nut to compress tightly.

When the device is used, the stay ropes at the inlet of the stay ropes are pressed firstly, after the stay ropes are outwards tensioned at the outlet of each stay rope, the stay ropes at the outlet of each stay rope are pressed by the nuts, the stay ropes are in a relatively tensed state, then the movable cylinder is adjusted backwards to drive the fixed side branches to move backwards, the fixed side branch stay wire columns in the outer sleeve of the fixed side branches are driven by the stay ropes to compress the supporting springs, at the moment, the fixed side branch stay wire columns continuously pull the stay ropes under the elasticity of the supporting springs, the stay ropes are in an elastic pre-tensed state, then the movement of the stay ropes is controlled through the side branch knob, so that the small implantation (intervention) instrument in the body is controlled, and in the whole operation process, the stay ropes are always in an elastic pre-tensed state, so that the operation precision is greatly improved. Each stay wire side branch corresponds to the motion quantity of each stay wire to be accurately controlled, so that the accurate control of a plurality of small implantation (intervention) instruments is realized.

Preferably, a plurality of stay wire side branches are arranged, the plurality of stay wire side branches are uniformly distributed along the circumferential direction of the inner shaft, and the shell is provided with axially-opened notches for the extension of the stay wire side branches. Each stay wire side branch is used for independently operating one stay rope, and a plurality of stay wires can be independently operated by a plurality of stay wire side branches.

Preferably, a notch for clamping in the pull rope is arranged at the edge of the top end of the pull wire side branch pull wire column, and the pull rope is placed in the notch and is pressed by a screw cap. Furthermore, the stay wire side branch outer sleeve is a transparent sleeve, so that the observation is convenient.

Preferably, the inner shaft is connected with the shell through a threaded quick-release connector; the thread quick-release connecting piece comprises an outer sleeve and a thread quick-release matching structure, an outer thread section is arranged on the outer shell, the thread quick-release matching structure comprises a first lantern ring and a second lantern ring, the inner diameters of the first lantern ring and the second lantern ring are larger than the outer diameter of the outer thread section, the inner side surfaces of the first lantern ring and the second lantern ring are provided with inner threads matched with the outer thread section, a supporting spring pushed in the radial direction is arranged between the first lantern ring and the second lantern ring, the first lantern ring and the second lantern ring are sleeved on the outer thread section, the supporting spring enables the two opposite sides of the first lantern ring and the second lantern ring to be clung to the outer thread section, and pressing positions are arranged on the outer sides of the other ends of the first lantern ring and the second lantern ring which are not clung to the outer thread section; the external thread section is provided with a notch in the axial direction, the external sleeve is sleeved outside the external thread section and the thread quick-release matching structure, the external sleeve is provided with a through hole for exposing the external sleeve from the pressing position, the internal shaft is fixedly connected with a lug, and the lug penetrates through the notch on the shell and is inserted into an annular clamping groove arranged on the inner side of the external sleeve. The quick-release connecting piece of screw thread realizes the quick-release connection with the external screw thread section of shell, and the quick-release connecting piece of screw thread drives the outer sleeve and then drives the internal shaft and reciprocate, after removing the required position, unclamp and press the position, thereby first lantern ring and second lantern ring resume with the laminating of external screw thread section very convenient in the removal of spacing internal shaft in fore-and-aft direction.

Preferably, the rear end of the shell is provided with a dissociation knob, the dissociation knob is connected with a central steel cable, and the central steel cable penetrates through the middle shaft of the control handle.

Preferably, the front end of the control handle is provided with a handle head with a pen point structure, the rear end of the handle head is detachably connected with the shell through a bayonet and a buckle, and a rotary sleeve for connecting and fixing the handle head to an external support frame is sleeved outside the handle head. Specifically, the front end of the handle head is communicated with the pipeline, the rear end of the handle head is provided with an open integral cavity, and the rear end of the handle head is in sealing butt joint with the transfer pipe; the inside of the switching tube is provided with a central steel cable to pass through; the other end of the switching tube is sealed; the external of the switching tube is provided with a screw-connected sealing cap which is connected with the handle head to tightly fix the switching tube and the handle head. The other medicament injection hole that link up of establishing of handle head, thereby medicament injection hole intercommunication is to the first front end of handle and is linked together to the pipeline, and handle head rear end and transfer pipe all have carried out sealed processing, and the medicament can not flow back in the control handle.

The application has the advantages that: the motion quantity of each driving stay cord can be accurately adjusted, accurate control of the instrument is achieved, the springs at the bottoms of the side branches are fixed in the whole process, pre-tightening tension is provided for tensioning the stay cords, and the accuracy of stay cord operation is maintained.

Drawings

FIG. 1 is a schematic cross-sectional view of a control handle structure provided in an embodiment;

FIG. 2 is a schematic cross-sectional view of a stationary sidebranch structure provided in an embodiment;

FIG. 3 is a schematic cross-sectional view of a side branch structure of a pull wire provided in an embodiment;

FIG. 4 is a perspective view of a threaded quick release connector provided in an embodiment;

FIG. 5 is a schematic cross-sectional view of a threaded quick release connection provided in an embodiment;

FIG. 6 is a schematic diagram of a threaded quick release mating structure provided in an embodiment mated with external threads of a housing;

FIG. 7 is a schematic illustration of the connection of the inner shaft provided in the embodiment to the housing via a threaded quick release connection;

FIG. 8 is a schematic view of a center cable extending from within the central axis of the control handle, as provided in the embodiments;

FIG. 9 is a schematic view of a control handle front end handle head provided in an embodiment;

FIG. 10 is a schematic cross-sectional view of a handle head structure provided in an embodiment;

FIG. 11 is a schematic view of a connection of a handle head to a transfer tube provided in an embodiment;

reference numerals: the device comprises a shell 1, an inner shaft 2, a moving cylinder 3, a fixed side branch 4, a fixed side branch outer sleeve 41, a fixed side branch wire pulling column 42, a supporting spring 43, a wire pulling side branch 5, a wire pulling side branch outer sleeve 51, a side branch knob 52, a wire pulling side branch wire pulling column 53, a threaded quick-release connecting piece 6, an outer sleeve 61, a threaded quick-release matching structure 62, a first lantern ring 62-1, a second lantern ring 62-2, a pressing position 62-3, a release knob 7, a handle head 8, a rotating sleeve 81, an adapter tube 9 and an adjusting knob 10.

Detailed Description

For the purposes of promoting an understanding of the principles of the utility model, reference will now be made to the preferred embodiments and specific examples will be described in connection with the accompanying drawings.

Examples

The present embodiment provides a minimally invasive surgery pull rope control handle for controlling and manipulating a pull rope of a small implantation (intervention) instrument, and further manipulating the small implantation (intervention) instrument in an implant body, referring to fig. 1, the control handle comprises a housing 1, an inner shaft 2, the inner shaft 2 is arranged in the housing 1 and can move back and forth freely, a moving cylinder 3 is arranged at the rear end of the inner shaft 2, the moving cylinder 3 is sleeved at the rear end of the inner shaft 2 and can slide back and forth on the inner shaft 2, a fixed lateral branch 4 perpendicular to the moving cylinder 3 is fixedly connected to the moving cylinder 3, a notch in the front-back direction is formed in the housing 1, the fixed lateral branch 4 extends out of the housing 1 through the notch, and the notch in the front-back direction allows the moving cylinder 3 to drive the fixed lateral branch 4 to move back and forth.

The schematic cross section of the structure of the fixed side branch 4 is shown in fig. 2, the fixed side branch 4 comprises a fixed side branch outer sleeve 41 fixedly connected with the movable barrel 3, a fixed side branch pulling column 42 is installed in the fixed side branch outer sleeve 41, a supporting spring 43 is arranged between the bottom of the fixed side branch pulling column 42 and the inner cavity of the fixed side branch outer sleeve 41, a limiting block for preventing the fixed side branch pulling column 42 from falling off from the fixed side branch outer sleeve 41 is arranged between the fixed side branch pulling column 42 and the fixed side branch outer sleeve 41, the center of the fixed side branch pulling column 42 is provided with a hollow for penetrating a pull rope, the side wall of the fixed side branch outer sleeve 41 is also provided with a perforation for penetrating the pull rope, the top of the fixed side branch pulling column 42 is provided with a pull rope inlet position, external threads are arranged outside the top of the fixed side branch pulling column 42 and used for connecting nuts, and after the pull rope penetrates from the pull rope inlet, the nuts are screwed on the top of the fixed side branch pulling column 42 and can compress the pull rope.

Referring to fig. 1, an inner shaft 2 is fixedly connected with stay wire side branches 5, the number of the stay wire side branches 5 is greater than or equal to one, the stay wire side branches 5 are uniformly distributed along the circumferential direction of the inner shaft 2, and a notch for extending out the stay wire side branches 5 in the front-rear direction is formed in a shell 1; the schematic cross section of the structure of the stay wire side branch 5 is shown in fig. 3, the stay wire side branch 5 comprises a stay wire side branch outer sleeve 51 fixedly connected with the inner shaft 2, a side branch knob 52 is arranged on the stay wire side branch outer sleeve 51, a stay wire side branch stay wire column 53 is arranged in an inner cavity of the stay wire side branch outer sleeve 51, a hollow stay wire is arranged in the stay wire side branch stay wire column 53 and used for penetrating through a through hole of the stay wire side branch outer sleeve 51, the top of the stay wire side branch stay wire column 53 is arranged at a stay wire outlet position, an external thread is arranged outside the top end of the stay wire side branch stay wire column 53 and used for connecting a nut, the nut is screwed on the top end of the stay wire side branch stay wire column 53 after the stay wire is penetrated out from the stay wire outlet, a notch for clamping the stay wire is formed in the top edge of the top end of the stay wire side branch stay wire column 53, a wire is tightly pressed when the nut is screwed through the notch, an excessive stay wire can be wound and fixed on a screw cap top end column, and a sealing ring is arranged in the nut to achieve a sealing effect. The inner wall of the side branch knob 52 is provided with internal threads, the outer wall of the stay wire side branch stay wire column 53 is provided with matched external threads, the rotation motion of the side branch knob 52 is the linear motion of the stay wire side branch stay wire column 53 through thread transmission, and the motion range of the stay wire side branch stay wire column 53 can be set to be 10mm, namely the motion length range of the control stay rope is 10mm. Specifically, the stay wire side branch outer sleeve 51 may be configured as a transparent sleeve, so as to facilitate the observation of an operator; the wire side branch wire pulling column 53 is matched with the wire side branch outer sleeve 51 through a sealing ring to achieve a sealing effect.

In summary, the pulling rope penetrates from the pulling rope inlet, enters the shell 1 through the hollow of the fixed side branch pulling wire column 42 and the perforation of the side wall of the fixed side branch outer sleeve 41, extends out of the front end of the shell 1 into the guide pipe, extends into the patient along the guide pipe, bypasses and is connected with the movement part of the small implantation (intervention) instrument, returns to the guide pipe, returns to the shell 1, and extends out of the pulling rope outlet after passing through the perforation of the wall of the pulling wire side branch outer sleeve 51 and the hollow of the pulling wire side branch pulling wire column 53. Firstly, pressing a pull rope at the inlet of the pull rope by using a screw cap; when a plurality of pull ropes are arranged, each pull rope side branch 5 can be operated similarly, after each pull rope is pulled outwards from each pull rope outlet, the pull rope at each pull rope outlet is pressed by a nut, at the moment, the pull rope is in a relatively tight state, then the position of the movable cylinder 3 is adjusted backwards to drive the fixed side branch 4 to move backwards, the fixed side branch pull wire column 42 in the fixed side branch outer sleeve 41 is driven by the pull rope to compress the supporting spring, at the moment, the fixed side branch pull wire column 42 continuously pulls the pull rope under the elasticity of the supporting spring, the pull rope is in an elastic pre-tightening state, and then the movement of the pull rope is controlled by the side branch knob 52 to further control a small implantation (intervention) instrument in the body. Each stay wire side branch 5 corresponds to the motion quantity of each stay wire to accurately control a plurality of small implantation (intervention) instruments.

In a possible implementation manner, for quantification and more convenient control of the movement of the moving cylinder 3, referring to fig. 9, an adjusting knob 10 is arranged at the tail of the housing 1, the adjusting knob 10 is arranged on the housing 1 and has a rotational freedom degree, and can not move back and forth, an inner wall of the adjusting knob 10 is provided with an inner thread, an outer wall of the moving cylinder 3 is provided with an outer thread matched with the inner thread, the inner thread of the adjusting knob 10 is meshed with the outer thread of the moving cylinder 3, and the movement of the moving cylinder 3 is converted into linear movement of the moving cylinder 3 through the rotation of the adjusting knob 10, so that the back and forth movement of the moving cylinder 3 is more conveniently and accurately controlled.

In a possible implementation manner, in order to more conveniently control the movement of the inner shaft 2 relative to the shell 1, the inner shaft 2 is connected with the shell 1 through a threaded quick-release connecting piece 6, as shown in fig. 4 and 5, the threaded quick-release connecting piece 6 comprises an outer sleeve 61 and a threaded quick-release matching structure 62, the shell 1 is provided with an external threaded section, the threaded quick-release matching structure 62 is matched with the external threads on the shell 1 as shown in fig. 6, the threaded quick-release matching structure 62 comprises two lantern rings (a first lantern ring 62-1 and a second lantern ring 62-2), the inner diameter of each lantern ring is larger than the outer diameter of the external threaded section, the inner side of each lantern ring is provided with an internal thread matched with the external threaded section, a supporting spring in the radial direction is arranged between the two lantern rings, the two lantern rings are sleeved on the external threaded section on the shell 1, the supporting springs enable the two opposite sides of the two lantern rings to be tightly attached to the external threaded section, the inner side of the upper end of the first lantern ring 62-1 is tightly attached to the external threads, the inner side of the lower end of the second lantern ring 62-2 is tightly attached to the external threads, and the other end of the two lantern rings are not tightly attached to the external threads, and the two lantern rings are respectively provided with two elastic force-free-pressing positions 62 and can be pressed to move to the external threads to overcome the external thread, and the external thread can be tightly pressed by the supporting structure and can be tightly pressed by the external thread to be tightly pressed by the external thread 3; referring to fig. 6 and 7, the external thread section of the housing 1 is provided with a notch in the front-rear direction, the external sleeve 61 is sleeved outside the external thread section and the thread quick-release matching structure 62, the external sleeve 61 is provided with a through hole for exposing the external sleeve 61 from the pressing position 62-3, the internal shaft 2 is fixedly connected with a lug, and the lug passes through the notch on the housing 1 and is inserted into an annular clamping groove arranged on the inner side of the external sleeve 61; the quick-dismantling matching structure 62 is connected with the external thread section of the shell 1 in a quick-dismantling mode, the outer sleeve 61 is driven by the quick-dismantling matching structure 62 to drive the inner shaft 2 to move in the front-rear direction, after the inner shaft 2 moves to a required position, the pressing position 62-3 is loosened, and the first lantern ring 62-1 and the second lantern ring 62-2 are restored to be attached to the external thread, so that the movement of the inner shaft 2 is limited in the front-rear direction.

In a possible implementation manner, the rear end of the shell 1 is provided with a dissociation knob 7, the dissociation knob 7 is connected with a central steel cable, and the central steel cable penetrates through the central shaft of the control handle, as shown in fig. 8; the front end of the control handle is provided with a handle head 8 with a pen-point structure, as shown in fig. 9 and 10, the handle head 8 is pen-point-shaped, namely, the diameter of the front end is gradually contracted, the rear end of the handle head 8 is connected with the shell 1 through a bayonet and a buckle, the handle head 8 is sleeved with a rotary sleeve 81, the handle head 8 is connected with the shell 1, the rotary sleeve 81 is used for being connected and fixed to an external supporting frame, the rotary sleeve 81 is relatively fixed, and the control handle (the handle head, the shell, an internal shaft, a central steel cable and the like) can freely rotate. The rear end of the handle head 8 is an open integral cavity, as shown in fig. 11, the rear end of the handle head 8 is closed through one end of the switching tube 9, a sealing ring is arranged between the switching tube 9 and the handle head 8, a central steel cable passes through the switching tube 9, and the other end of the switching tube 9 is closed through a sealing ring cap in a screwed mode. The rear end of the handle head 8 is tightly pressed with the adapter tube and the pen point-shaped structure through the screw-connection sealing cap for sealing. The pull rope, the central steel cable and other structures penetrate through the hole at the rear end of the adapter tube 9, enter the handle head 8 after passing through the adapter tube 9, and are led out from the front end of the handle head 8.

Claims (12)

1. The minimally invasive surgery stay cord control handle is characterized by comprising a shell (1), an inner shaft (2), and a fixed side branch (4) and a stay wire side branch (5) which are arranged on the inner shaft (2); the inner shaft (2) is axially and freely movably arranged in the shell (1); the fixed side branch (4) comprises a fixed side branch outer sleeve (41), a fixed side branch wire pulling column (42) is arranged in the fixed side branch outer sleeve (41), a supporting spring (43) which tends to drive the fixed side branch wire pulling column (42) outwards is arranged between the fixed side branch wire pulling column (42) and an inner cavity of the fixed side branch outer sleeve (41), and a stay rope inlet position is arranged at the hollow top of the fixed side branch wire pulling column (42); the wire-drawing side branch (5) comprises a wire-drawing side branch outer sleeve (51), a side branch knob (52) is arranged on the wire-drawing side branch outer sleeve (51), an inner thread is arranged on the inner wall of the side branch knob (52), a wire-drawing side branch wire-drawing column (53) is arranged in the inner cavity of the wire-drawing side branch outer sleeve (51), and the outer wall of the wire-drawing side branch wire-drawing column (53) is in threaded connection with the side branch knob (52); the stay wire side branch stay wire column (53) is hollow, and the top is provided with a stay wire outlet position.

2. A minimally invasive surgery pull rope control handle according to claim 1, characterized in that the inner shaft (2) is sleeved with a moving cylinder (3) which freely slides along the inner shaft (2), and the fixed side branches (4) are arranged on the moving cylinder (3).

3. A minimally invasive surgical pull cord control handle according to claim 2, characterized in that the housing (1) is provided with an adjustment knob (10) limiting the axial movement, the adjustment knob (10) is provided with an internal thread, the moving cylinder (3) is provided with a matching external thread, and the rotation of the adjustment knob is converted into an axial linear movement of the moving cylinder (3) relative to the inner shaft (2) by means of a screw drive.

4. A minimally invasive surgical pull cord control handle according to claim 1, characterized in that the fixation side branch pull cord post (42) and/or the associated pull cord side branch pull cord post (53) is provided with a screw cap at the cord inlet for pressing the fixation pull cord.

5. The minimally invasive surgery stay cord control handle according to claim 1, wherein a plurality of stay cord side branches (5) are arranged, the stay cord side branches (5) are uniformly distributed along the circumferential direction of the inner shaft (2), and the shell (1) is provided with notches for extending out the stay cord side branches (5).

6. The minimally invasive surgery stay cord control handle according to claim 1, wherein a notch for clamping in a stay cord is formed in a top edge of the stay cord side branch stay cord column (53).

7. A minimally invasive surgical pull cord control handle according to claim 1, characterized in that the pull cord side branch outer sleeve (51) is provided as a transparent sleeve.

8. A minimally invasive surgical pull cord control handle according to claim 1, characterized in that the inner shaft (2) is connected to the housing (1) by a threaded quick release connection (6); the threaded quick-release connecting piece (6) comprises an outer sleeve (61) and a threaded quick-release matching structure (62), an external thread section is arranged on the shell (1), the threaded quick-release matching structure (62) comprises a first lantern ring (62-1) and a second lantern ring (62-2), the inner diameters of the first lantern ring (62-1) and the second lantern ring (62-2) are larger than the outer diameter of the external thread section, the inner side surfaces of the first lantern ring (62-1) and the second lantern ring (62-2) are provided with internal threads matched with the external thread section, a supporting spring pushing in the radial direction is arranged between the first lantern ring (62-1) and the second lantern ring (62-2), the first lantern ring (62-1) and the second lantern ring (62-2) are sleeved on the external thread section, the supporting spring enables the two opposite sides of the first lantern ring (62-1) and the second lantern ring (62-2) to be tightly attached to the external thread section, and the outer sides of the other ends of the first lantern ring (62-1) and the second lantern ring (62-2) which are not tightly attached to the external thread section are provided with pressing positions (62-3); the external thread section is provided with a notch in the axial direction, the external sleeve (61) is sleeved outside the external thread section and the thread quick-release matching structure (62), the external sleeve (61) is provided with a through hole for the pressing position (62-3) to expose the external sleeve (61), the internal shaft (2) is fixedly connected with a lug, and the lug penetrates through the notch in the shell (1) and is inserted into an annular clamping groove arranged on the inner side of the external sleeve (61).

9. The minimally invasive surgery pull rope control handle according to claim 1, wherein a dissociation knob (7) is arranged at the rear end of the housing (1), the dissociation knob (7) is connected with a central steel cable, and the central steel cable penetrates through the central shaft of the control handle.

10. A minimally invasive surgery pull rope control handle according to claim 1, characterized in that the front end of the control handle is provided with a handle head (8) with a pen-point structure, the rear end of the handle head (8) is detachably connected with the housing (1) through a bayonet and a buckle, and a rotary sleeve (81) for connecting and fixing to an external support frame is sleeved outside the handle head (8).

11. The minimally invasive surgery stay cord control handle according to claim 10, wherein the front end of the handle head (8) is communicated with the pipeline, the rear end of the handle head is provided with an open integral cavity, and the rear end of the handle head (8) is in sealing butt joint with the adapter tube (9); the inside of the switching tube (9) is provided with a central steel cable to pass through; the other end of the switching tube is sealed; the external of the switching tube (9) is connected with the handle head (8) through the screw-connection sealing cap, and the switching tube (9) and the handle head (8) are pressed and fixed.

12. A minimally invasive surgical pull cord control handle as claimed in claim 11, wherein a through medicament injection aperture is provided alongside the handle head (8).

Images