CN210170161U - Surgical instrument for removing vaginal tube in uterine cancer - Google Patents

Abstract

The utility model discloses a surgical instrument for excising a vaginal canal caused by uterine cancer, which belongs to the technical field of medical instruments and particularly comprises a fixing unit and a cutting unit; the application firstly provides an intra-vaginal ring-cutting type, the vaginal tube is fixed on the inner wall of the vaginal tube, on one hand, the uterus is sealed before the vaginal tube is cut off, on the other hand, the uterus to be cut off is fixed on an appliance in advance, the uterus can be directly pulled out by the appliance after the cutting type is finished, the uterus does not need to be clamped and pulled by a clamp, the process is simple and reliable, and the possibility of dropping cancer cells is radically eliminated; in addition, the cutting operation is directly finished in the vaginal canal, which is different from the traditional method of cutting the outer wall of the vaginal canal, and the operation convenience is clear at a glance.

Description

Surgical instrument for removing vaginal tube in uterine cancer

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a special surgical appliance for excising a uterine cancer vaginal tube.

Background

Cervical cancer is the first disease species of the gynecological malignant tumors in China at present, most of cervical cancer is found in the stage I and the stage II, and the operation is the main treatment means in the stage. During the past 20 years, laparoscopic surgery (including traditional laparoscopy and robotically assisted laparoscopy) has gradually replaced open surgery as the dominant surgical approach with its advantages of sophistication, safety, fast recovery, short hospital stay, etc. However, in 2018, two extremely-limited studies find that the recurrence and survival rate after laparoscopic surgery are obviously lower than those of open surgery, the sylvan is raised in the international gynecologic department, and through dispute and discussion, several problems in the laparoscopic surgery step are considered as the key points of the problems.

The way of breaking away the vagina under the laparoscope is different according to individual habits of doctors, and often the tumor-free principle cannot be firmly followed, so that a cancer focus is exposed in the abdominal cavity, and the risk of spreading tumor cells is greatly increased. This problem is also emphasized in the just issued "Chinese specialist" several opinions on cervical cancer laparoscopic surgery related problems ". How to isolate the cervix uteri and the tumor thereof, and how to break away from the vagina without the tumor is a crucial link for reducing the risk of tumor spreading, but the tumor-free operation is executed only according to the personal habit of a doctor and the effect of cutting off the vagina and taking out the uterus without the tumor at each time cannot be guaranteed, for example, in the traditional operation process, after the vaginal tube is cut off by an ultrasonic scalpel, the channel of the vaginal tube fracture to the cervix uteri is completely or half placed in the abdominal cavity, and the dropping and diffusion of cancer cells can be greatly led under the extrusion of a uterine lifter and the clamping action of a dragging clamp which is inserted into the uterine lifter, so that the cervical uteri can be broken away from the vagina and taken out the uterus normatively without the tumor to the maximum extent, namely, the vaginal tube fracture can be reliably sealed in the operation process, and the one step of taking out the collector.

The early cervical cancer operation breaks away from the vagina and takes out the uterus at the last step of the operation, the operation range of the early cervical cancer operation comprises sub-extensive total hysterectomy and extensive total hysterectomy, the length of the transvaginal resection is 1-2cm at the upper end and 3cm at the upper end respectively, the previous operation is also completely judged according to the experience of doctors, the cutting length is not accurate enough by combining the elasticity of tissues, therefore, the accurate measurement of the length of the resected vagina is realized while the vaginal wall is cut off without tumor.

After cutting off the vagina under the peritoneoscope, even if keep apart cervix uteri and its surperficial tumour focus, whole excision uterus still is located the basin abdominal cavity, often can make the uterus at the intra-abdominal cavity internal rotation of basin when taking out through the centre gripping pincers, increases the probability that the tumour was disseminated, and consequently, it is fast, convenient, accurately take out the uterus the utility model discloses a still target.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a uterus canceration vagina tube excision surgical instruments, its original ground proposes the intraductal ring-cutting notion of vagina, separate the inner chamber of vagina tube when being fixed in the central siphon with the vagina tube, realize promptly will be fixed in surgical instruments inner in advance with disconnected part promptly, and will have the cervix of focus to seal completely and keep apart, realize the tumor-free and normalized excision uterus from the source, after the cutting is accomplished to the cutting unit, need not to probe in addition the clamp and pull out the external with disconnected uterus, only need outwards pull the central siphon and can realize, the operation is convenient fast, the rotation of uterus in the abdominal cavity after having avoided deviating from the fracture, reduce the risk that cancer cell drops.

In order to solve the technical problems that the fracture of the vaginal canal can not be completely closed or in a semi-closed state in the prior art, the cutting-off and taking-out steps are discontinuous, and higher cancer cells fall and spread, the utility model provides a surgical instrument for vaginal canal resection in uterine cancer change, which specifically comprises a fixing unit, a shaft tube and a cutting unit;

the fixing unit is arranged on the shaft tube, positioned between the inner end of the shaft tube and the cutting unit and used for fixing the vaginal tube in the operation process;

the cutting unit is arranged on the shaft tube and used for being placed in the inner cavity of the vaginal tube in the surgical process and cutting the vaginal tube along the circumferential direction.

Furthermore, the utility model provides a surgical instrument for removing the vaginal tube caused by the uterine cancer, wherein the fixing unit comprises a binding band and an expanding unit;

the bandage is provided with a connecting piece for connecting the two ends of the bandage in a circling way and is used for circling the outer wall of the vaginal canal in the operation process;

the central siphon is located to expansion unit, this expansion unit cover the central siphon and be located the interior terminal surface of central siphon with between the cutting unit for arrange in the operation process the inner chamber of vaginal canal, through expansion action of expansion unit certainly the place position of expansion unit will the inner chamber of vaginal canal blocks and separates, realizes the sealing of uterus and handles, and the periphery of expansion unit expands outward simultaneously will vaginal canal pressure is forced in the inner circle face of the bandage of coiling in the vaginal canal periphery, realizes reliably closed simultaneously, will treat that the uterus of cutting separation is fixed in the utensil inner, and the later stage of being convenient for is directly drawn and is shifted out.

Preferably, the utility model provides a pair of uterus cancer becomes vaginal canal excision surgical instruments, the required precision and the leakproofness of expansion are considered, have adopted the higher expansion spout structure of expansion precision and have specially added the cyclic annular baffle of establishing for axial seal in this application, wherein, the expansion unit includes cyclic annular baffle and expansion spout structure, expansion spout structure cover is located the central siphon, the cyclic annular baffle cover locate the central siphon set up in the interior terminal surface of expansion spout structure.

Preferably, the utility model provides a surgical instrument for removing a uterine cancer-changed vaginal canal, in view of the practicability and simplicity of the structure, wherein the expansion unit comprises an expansion ring and an annular air bag a, the expansion ring is enclosed by a plurality of independent expansion blocks, the annular air bag a is arranged between the expansion ring and the shaft tube, the annular air bag a penetrates through the shaft tube through an air tube and is led to the outer end of the shaft tube through the inner cavity of the shaft tube, and a one-way valve structure is arranged in the air tube; the specific working mode is that the air pumping device is connected with the air pipe to pump air to the annular air bag a, the annular air bag a is inflated and expanded, the inner ring of the annular air bag a props against the shaft tube, the outer ring of the annular air bag a props against the expansion ring outwards, and therefore the expansion ring is pushed to expand outwards along the radial direction, and finally the vaginal tube wall is pressed on the inner ring surface of the binding band.

Further, the utility model provides a pair of uterus cancer becomes vaginal canal excision surgical instruments expands along radially outward for the restriction expansion piece and is unlikely to take place the skew, wherein, still includes slide rail spout group, slide rail spout group is including spout dish and slide rail, the slide rail along radially set up in the interior terminal surface of expansion piece, and/or outer terminal surface, the spout dish along radially set up with the corresponding spout of slide rail, spout dish cover is located the central siphon.

Preferably, the utility model provides a pair of uterus cancer becomes vaginal canal excision surgical instruments, wherein, the cutting unit is including stretching out mechanism and circumference cutting machine, stretch out the mechanism and set up in the central siphon, the circumference cutting machine is connected in stretching out the mechanism.

Preferably, the utility model provides a surgical instrument for removing uterine cancer vaginal tube, wherein the cutting unit comprises an extending structure, a knife body, a knife rest and a rotating structure; the scalpel body is assembled in the scalpel frame, the rotatable cover of revolution mechanic inward flange is located central siphon, outward flange fixed connection in the scalpel frame, extending structure sets up between scalpel body and revolution mechanic for in the operation process will the scalpel body is released the scalpel frame and is impaled the vaginal canal through extending structure, still include reset spring, reset spring installs between scalpel body and scalpel frame, is used for pushing back the scalpel body that releases knife frame outer lane face in the scalpel frame after the cutting is accomplished.

Preferably, the utility model provides a pair of operation utensil is amputated to uterus canceration vagina pipe, considers vagina pipe thickness inhomogeneity, teaches hard at actual cutter cutting process, wherein, the blade is the electrotome.

Preferably, the utility model provides a surgical instrument for removing the vaginal tube caused by uterine cancer, wherein the knife body is an electric cutting machine.

Furthermore, the utility model provides a surgical instrument for excision of vaginal canal caused by uterine cancer, wherein, considering the feasibility of the structure, an outer tube is also provided, the outer tube is coaxially arranged with the axle tube, the outer tube comprises an inner end head tube and an outer end rotating tube, and a sealing end cover is arranged between the inner end surface of the head tube and the axle tube; the head pipe is stopped at the inner end face of the expansion unit from the inner end face of the shaft pipe and is fixedly connected to the shaft pipe through a bracket; the inner tube wall of the rotating tube is connected to the rotating structure and fixedly connects the inner end of the rotating tube to the cutting unit.

Preferably, the utility model provides a pair of uterus cancer becomes pessary excision surgical instrument, wherein, overhanging structure is annular gasbag b, annular gasbag b leads the outer end of outer tube through the trachea between follow rotation tube and the central siphon, wherein, is equipped with the check valve structure in the tracheal tube way.

Preferably, the utility model provides a surgical instrument is excised to uterus canceration vagina pipe, wherein, considers the precision requirement of cutting equally, overhanging structure is the expansion spout structure.

Preferably, the utility model provides a surgical instrument for removing a vaginal tube from uterine cancer, considering that when the vaginal tube is pulled and removed after being cut off, because of the large resistance, the outer diameter of the bandage wound on the outer wall of the vaginal tube or the outer tube of the instrument on the inner wall of the vaginal tube may slip, wherein the outer diameter of the bandage in the wound state is smaller than the outer diameter of the outer tube, and the bandage is axially stopped on the outer tube, and the diameter of the expansion unit in the unexpanded state is smaller than the outer diameter of the outer tube, and the width of the bandage is smaller than the distance from the inner end surface of the expansion unit to the inner end surface of the rotary tube; the binding band can be assembled in the outer tube surface, the inner end of the binding band is blocked by the concave step-shaped shoulder part of the outer tube when the binding band is pulled, and the outer tube on the inner wall of the vaginal tube is pulled outwards, so that the possibility of slipping is obviously eliminated due to the clamping assembly of the binding band.

Preferably, the utility model provides a surgical instrument is excised to uterus canceration vagina pipe, wherein, the diameter of expansion unit under the not expanded state is the same with the external diameter of outer tube.

Further, the utility model provides a pair of uterus cancer becomes vaginal canal excision surgical instruments, wherein, still includes the handle, the handle with the outer end of rotatory pipe offsets and assembles in the outer end of central siphon.

Preferably, the utility model provides a pair of operation utensil is excised to uterus cancer change vagina, the actual conditions of operation are considered, and at least 2cm excision formula is most common in cervix outer end, wherein, cutting unit position distance 2cm in the central siphon, just fixed unit cover is located the central siphon in the 2cm within range.

Preferably, the utility model provides a pair of operation utensil is excised to uterus cancer change vagina tube wherein, still includes and lifts palace pole, it sets up in the central siphon inner chamber to lift palace pole to be connected with the knob screw drive that the central siphon outer end set up, be used for stretching out or retracting along with the rotatory action of knob the interior terminal surface of central siphon.

Preferably, the utility model provides a surgical instrument is excised to uterus cancer change vaginal canal, wherein, the interior section of lifting the palace pole is equipped with the size mark.

Compared with the prior art, the utility model provides a pair of operation utensil is amputated to uterus canceration vagina tube has following advantage: the application firstly provides an intra-vaginal ring incision type, a binding band is additionally arranged on the outer wall of a vaginal tube, an expansion unit is arranged on the inner wall of the vaginal tube, on one hand, the uterus is sealed before the vaginal tube is cut off, on the other hand, the uterus to be cut off is fixed in a tool in advance, the uterus can be directly pulled out by the tool after the incision type is finished, the uterus does not need to be clamped and pulled by other probes, the process is simple and reliable, and the possibility of cancer cell falling is fundamentally eliminated; in addition, the cutting operation is directly finished in the vaginal canal, which is different from the traditional method of cutting the outer wall of the vaginal canal, and the operation convenience is clear at a glance.

Drawings

FIG. 1 is a schematic view of the surgical instrument for removing a vaginal tube in uterine cancer;

FIG. 2 is a schematic view of the assembly structure of the expanding block and the annular air bag a of the surgical instrument for removing the vaginal tube due to the change of uterine cancer;

FIG. 3 is a schematic view of the expanding block of the expanding unit, the annular air bag a, the chute disc and the shaft tube of the surgical instrument for removing the vaginal tube due to the change of uterine cancer;

FIG. 4 is a schematic view of the assembly structure of the cutting unit blade and the overhanging structure of the instrument for the operation of excising the vaginal tube from uterine cancer;

FIG. 5 is a schematic view of the assembly structure of the cutting unit blade and the return spring of the surgical instrument for removing a vaginal tube from a uterine cancer patient;

FIG. 6 is a schematic view of the cutting unit blade, the blade holder, the extending structure and the return spring assembly structure of the surgical instrument for removing a vaginal tube from uterine cancer of the present invention;

FIG. 7 is a schematic view of the rotation structure of the surgical instrument for removing a vaginal tube in uterine cancer;

FIG. 8 is a schematic view of the rotating structure and the blade assembly structure of the surgical instrument for removing vaginal tube due to uterine cancer;

FIG. 9 is a schematic view of the structure of the expanding unit, the cutting unit and the shaft tube of the surgical instrument for removing the vaginal tube due to the change of uterine cancer;

FIG. 10 is a schematic view of the assembly structure of the head tube and the shaft tube of the instrument for the operation of removing the vaginal tube from uterine cancer;

FIG. 11 is a schematic view of the expanding unit of another embodiment of the surgical instrument for removing a vaginal canal after cervical cancer;

FIG. 12 is a schematic view of the extended structure of the cutting unit in another embodiment of the surgical instrument for removing vaginal tube from uterine cancer of the present invention.

Wherein: 1. binding bands; 2. an axle tube; 3. an expansion unit; 4. a cutting unit; 5. an annular air bag a; 6. an expansion block; 7. a chute disc; 8. a slide rail; 9. a chute; 10. an overhang structure; 11. a blade body; 12. a tool holder; 13. a rotating structure; 14. a return spring; 15. an outer tube; 150. a head pipe; 151. rotating the tube; 16. a handle; 17. a womb lifting rod; 18. a knob; 19. expanding the chute structure; 20. an annular partition.

Detailed Description

The technical scheme of the utility model is further elaborated in detail with the accompanying drawings;

it should be noted that, in the present application, the "inner end", "outer end", "inner end face" and "outer end face" refer to the end of the surgical instrument inserted into the vaginal canal as the inner end, and the handle end as the outer end, which are only specified for convenience of description and are not intended to limit the technical solution of the present application.

Example 1

As shown in fig. 1, the present embodiment provides a surgical instrument for removing a vaginal tube from uterine cancer, which specifically includes a binding band 1 (in the present embodiment, a spring piece is used as the binding band, or a special spring piece-papa ring is used as the binding band, and since the papa ring has two stable states, namely a long strip shape and a curled shape, it is convenient to wrap the vaginal tube on the outer wall of the vaginal tube through a clamping operation in a narrow abdominal cavity), a shaft tube 2, an expansion unit 3 and a cutting unit 4;

the vaginal catheter comprises a bandage 1, wherein the bandage 1 is provided with a connecting piece for connecting two ends of the bandage 1 in a circling manner and is used for circling the outer wall of the vaginal catheter in the operation process;

the expansion unit 3 is sleeved on the shaft tube 2, is positioned between the inner end surface of the shaft tube 2 and the cutting unit 4, and is used for being placed in the inner cavity of the vaginal tube in the operation process, the inner cavity of the vaginal tube is blocked and separated from the position of the expansion unit 3 through the expansion action of the expansion unit 3, the sealing treatment of the uterus is realized, meanwhile, the periphery of the expansion unit 3 is expanded to press the vaginal tube on the inner ring surface of the binding band 1 wound on the periphery of the vaginal tube, the reliable sealing is realized, and meanwhile, the uterus to be cut and separated is fixed at the inner end of the appliance, so that the uterus can be conveniently and directly pulled and moved out in the later period;

specifically, as shown in fig. 1 to 3 and fig. 9, the expansion unit 3 includes an expansion ring and an annular air bag a5, the expansion ring is surrounded by a plurality of independent expansion blocks 6, the annular air bag a5 is disposed between the expansion ring and the shaft tube 2, the annular air bag a5 penetrates the shaft tube 2 through an air tube and is led to the outer end of the shaft tube 2 through the inner cavity of the shaft tube 2, wherein a one-way valve structure (not shown in the figure) is disposed in the air tube; the expansion block comprises an expansion block 6 and is characterized by further comprising a slide rail and slide groove group, wherein the slide rail and slide groove group comprises a slide groove disc 7 and a slide rail 8, the slide rail 8 is arranged on the inner end surface and the outer end surface of the expansion block 6 along the radial direction, slide grooves 9 corresponding to the slide rail 8 are formed in the slide groove disc 7 along the radial direction, the number of the slide groove discs 7 is 2, and the slide groove discs 7 are sleeved on the shaft tube 2 and are respectively assembled on the inner end surface and the outer end surface of the expansion;

the cutting unit 4 is arranged on the shaft tube 2 and is used for being placed in the inner cavity of the vaginal tube during an operation and cutting the vaginal tube along the circumferential direction; specifically, as shown in fig. 4 to 9, the cutting unit 4 includes an extending structure 10, a blade 11, a tool rest 12 and a rotating structure 13; the knife body 11 is assembled on the knife rest 12, the inner edge of the rotating structure 13 is rotatably sleeved on the shaft tube 2, the outer edge of the rotating structure 13 is fixedly connected to the knife rest 12, the extending structure 10 is arranged between the knife body 11 and the rotating structure 13 and used for pushing the knife body 11 out of the knife rest 12 and puncturing a vaginal tube through the extending structure 10 in the operation process, and the knife device further comprises a return spring 14, the return spring 14 is arranged between the knife body 11 and the knife rest 12 and used for pushing the knife body 11 pushed out of the outer ring surface of the knife rest 12 back into the knife rest 12 after cutting is completed; in addition, an outer tube 15 is further provided, the outer tube 15 is arranged coaxially with the shaft tube 2, the outer tube 15 comprises an inner end head tube 150 and an outer end rotating tube 151, and a sealing end cover is arranged between the inner end face of the head tube 150 and the shaft tube 2; the head pipe 150 is stopped at the inner end face of the expansion unit 3 from the inner end face of the shaft pipe 2, and is fixedly connected to the shaft pipe 2 through a bracket; the inner tube wall of the rotary tube 151 is connected to the rotary structure 13 and fixedly connects the inner end of the rotary tube 151 to the cutting unit 4; the extending structure 10 is an annular air bag b, the annular air bag b is led to the outer end of the outer tube 15 from the position between the rotating tube 151 and the shaft tube 2 through an air tube, wherein a one-way valve structure (not shown in the figure) is arranged in the air tube pipeline, at the moment, the outer end of the spring piece is stopped at the outer end face of the knife rest, and the spring piece is used as a cutting chopping block of the knife body in the rotating cutting process, so that the vaginal tube can be conveniently cut.

As shown in fig. 7, the rotation structure 13 of this embodiment specifically includes a gear plate, an elastic sheet, an axial connecting pipe and a radial connecting plate surface, the axial connecting pipe is sleeved on the shaft tube, and one end of the axial connecting pipe is connected to the inner edge of the radial connecting plate, the outer edge of the radial connecting plate is connected to the tool rest, wherein the gear plate is fixedly sleeved on the shaft tube, the elastic sheet is fixed to the inner wall of the axial connecting pipe, the elastic sheet is set to be in a shape similar to the tooth structure of the gear plate, and the elastic sheet is engaged with the gear plate and connected with the gear plate, so as to have.

Considering the feasibility of the structure, as shown in fig. 1, 9 and 10, considering the possibility of slipping-off of the bandage 1 wound around the outer wall of the vaginal tube or the device outer tube 15 on the inner wall of the vaginal tube due to the large resistance when the vaginal tube is pulled out after being cut off, wherein the outer diameter of the bandage 1 in the wound state is smaller than the outer diameter of the outer tube 15, the outer diameter of the expansion unit 3 in the unexpanded state is equal to the outer diameter of the blade holder 12 of the cutting unit 4, the diameter of the expansion unit 3 in the unexpanded state is smaller than the outer diameter of the outer tube 15, the width of the bandage 1 is smaller than the distance from the inner end surface of the expansion unit 3 to the inner end surface of the rotating tube 151, the bandage 1 can be assembled in the outer tube 15, the inner end of the bandage 1 is blocked by the concave shoulder of the outer tube 15 when being pulled, and the outer tube 15 on the inner wall of, the possibility of slipping is also completely eliminated due to the snap-fit of the strap 1, the pulling being more reliable.

In addition, as shown in fig. 1, in order to facilitate the holding, the present embodiment further includes a handle 16, the handle 16 is abutted against the outer end of the rotating tube 151 and is assembled to the outer end of the shaft tube 2, and in consideration of the actual condition of the operation, a resection operation of at least 2cm is most common at the outer end of the cervix, wherein the cutting unit 4 is located 2cm away from the inner end of the shaft tube 2, and the expanding unit 3 is sleeved on the shaft tube 2 within the above-mentioned 2cm range.

As a preferred technical solution, the present embodiment further includes a uterine lifting rod 17, the uterine lifting rod 17 is disposed in the inner cavity of the shaft tube 2 and is in transmission connection with a screw of a knob 18 disposed at the outer end of the shaft tube 2, and meanwhile, in order to adjust the cutting size, a size mark is disposed at the inner section of the uterine lifting rod 17.

The working process and principle are as follows: adjusting the extending length of the uterine lifting rod 17 according to the actual requirement of the distance between the cutting position and the cervix, then placing the appliance in the vaginal canal until the uterine lifting rod 17 is propped against the cervix, placing the binding band 1 in the celioscope hole, operating the clamp to wind the binding band 1 on the outer wall of the vaginal canal and corresponding to the concave part between the head tube 150 and the rotating tube 151, pumping air to the annular air bag a5 through an air pumping device, pushing the expansion block 6 to move outwards along the radial direction of the chute 9 along with the swelling of the annular air bag a5, and stopping pumping air to the annular air bag a5 when the expansion block 6 presses the corresponding vaginal canal wall and makes the vaginal wall tightly clung to the inner circle surface of the binding band 1; then, the annular air bag b is pumped by the air pumping device, the knife body 11 arranged on the knife rest 12 is pushed to extend out of the outer ring surface of the knife rest 12 along with the expansion of the annular air bag b and pierce the vaginal tube until the outer end of the knife body 11 is abutted against the inner ring surface of the bandage 1, the air pumping of the annular air bag b is stopped, at the moment, the rotating tube 151 is manually rotated, the rotating tube 151 drives the cutting unit 4 to rotate to cut the vaginal tube wall, when the cutting is completed, the one-way valve is controlled to release air for the annular air bag b, the knife body 11 is pushed back into the knife rest 12 under the action of the return spring 14 along with the release of the air, and finally the handle 16 is held to pull the appliance outwards until the cut uterus is moved out.

Example 2

Based on embodiment 1, preferably, the surgical instrument for removing a vaginal tube from uterine cancer provided in this embodiment takes account of the non-uniformity of the thickness of the vaginal tube, and the cutting process is relatively laborious in practice, wherein the blade 11 is an electric knife or an electric cutter, and the outer end of the spring plate is stopped at the outer end face of the expansion unit, and does not contact with the spring plate during the cutting process of the electric knife or the cutter, so as to prevent the cutting process from being hindered.

The working process and principle are as follows: when the expansion block 6 presses the corresponding vaginal tube wall and enables the vaginal tube wall to be tightly attached to the inner ring surface of the binding band 1, the air pumping is stopped, the circumferential cutting machine is driven to move through the extending structure 10 until the cutting blade is contacted with the vaginal tube wall, the cutting blade cuts the vaginal tube wall after electrification and simultaneously rotates the rotary tube to enable the cutting blade to circularly move around the shaft tube 2 for one circle until the cutting is finished, the cutting machine is pushed back into the knife rest through the reset spring, and finally the handle 16 is held to pull the appliance outwards until the cut uterus is moved out of the body; the previous steps are the same as those in embodiment 1, and are not described herein.

Example 3

Preferably, on the basis of embodiment 1, as shown in fig. 11 and 12, in consideration of the precision requirement and the sealing performance of the expansion, in this embodiment, an expansion chute structure 19 with higher expansion precision and an annular partition plate 20 specially provided for axial sealing are adopted to replace the structure of the balloon expansion block combination in embodiment 1, wherein the expansion unit 3 includes the annular partition plate 20 and the expansion chute structure 19, the expansion chute structure 19 is sleeved on the shaft tube 2, and the annular partition plate 20 is sleeved on the shaft tube 2 and is provided on the inner end surface of the expansion chute structure 19;

also in view of the cutting accuracy requirements, the overhanging structure 10 in the cutting unit 4 is replaced by an expanding chute structure 19.

The expansion chute structure 19 in this embodiment is conventional and will not be described herein.

Finally, it is to be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified and replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims (17)

1. A surgical instrument for excising a vaginal canal from uterine cancer is characterized in that: comprises a fixing unit, an axle tube and a cutting unit;

the fixing unit is arranged on the shaft tube, positioned between the inner end of the shaft tube and the cutting unit and used for fixing the vaginal tube in the operation process;

the cutting unit is arranged on the shaft tube and used for being placed in the inner cavity of the vaginal tube in the surgical process and cutting the vaginal tube along the circumferential direction.

2. The surgical instrument for removal of uterine cancerous vaginal canal of claim 1, characterized in that: the fixing unit comprises a binding band and an expansion unit;

a band having a connector for connecting the ends of the band around the vaginal canal during surgery;

the expansion unit is sleeved on the shaft tube, positioned between the inner end of the shaft tube and the cutting unit, and used for being placed in the inner cavity of the vaginal tube in the surgical process, the inner cavity of the vaginal tube is blocked and separated from the position of the expansion unit through the expansion action of the expansion unit, and meanwhile, the periphery of the expansion unit is expanded outwards to press the vaginal tube on the inner ring surface of the binding band wound on the periphery of the vaginal tube.

3. The surgical instrument for removal of uterine cancerous vaginal canal of claim 2, characterized in that: the expansion unit comprises an annular partition plate and an expansion sliding groove structure, the expansion sliding groove structure is sleeved on the shaft tube, and the annular partition plate is sleeved on the shaft tube and arranged on the inner end face of the expansion sliding groove structure.

4. The surgical instrument for removal of uterine cancerous vaginal canal of claim 2, characterized in that: the expansion unit comprises an expansion ring and an annular air bag a, the expansion ring is surrounded by a plurality of independent expansion blocks, the annular air bag a is arranged between the expansion ring and the shaft tube, the annular air bag a penetrates through the shaft tube through an air tube and is led to the outer end of the shaft tube through the inner cavity of the shaft tube, and a one-way valve structure is arranged in the air tube.

5. The surgical instrument of claim 4, wherein: the expansion block is characterized by further comprising a sliding rail sliding groove group, the sliding rail sliding groove group comprises a sliding groove disc and a sliding rail, the sliding rail is arranged on the inner end face and/or the outer end face of the expansion block along the radial direction, sliding grooves corresponding to the sliding rail are formed in the sliding groove disc along the radial direction, and the sliding groove disc is sleeved on the shaft tube.

6. The surgical instrument for removal of uterine cancerous vaginal canal of claim 2, characterized in that: the cutting unit comprises an extending structure, a knife body, a knife rest and a rotating structure; the scalpel body is assembled in the scalpel frame, the rotatable cover of revolution mechanic inward flange is located central siphon, outward flange fixed connection in the scalpel frame, extending structure sets up between scalpel body and revolution mechanic for in the operation process will the scalpel body is released the scalpel frame and is impaled the vaginal canal through extending structure, still include reset spring, reset spring installs between scalpel body and scalpel frame, is used for after the cutting is accomplished in pushing back the scalpel body of pushing out the scalpel frame in the scalpel frame.

7. The surgical instrument of claim 6, wherein: the knife body is an electrotome.

8. The surgical instrument of claim 6, wherein: the blade body is an electric cutting machine.

9. The surgical instrument of claim 6, wherein: the outer pipe is coaxially arranged with the shaft pipe and comprises an inner end head pipe and an outer end rotating pipe, and a sealing end cover is arranged between the inner end face of the head pipe and the shaft pipe; the head pipe is stopped at the inner end face of the expansion unit from the inner end face of the shaft pipe and is fixedly connected to the shaft pipe through a bracket; the inner tube wall of the rotating tube is connected to the rotating structure and fixedly connects the inner end of the rotating tube to the cutting unit.

10. The surgical instrument of claim 6, wherein: the outer extending structure is an annular air bag b, the annular air bag b is led to the outer end of the outer tube from the position between the rotating tube and the shaft tube through an air tube, and a one-way valve structure is arranged in the air tube.

11. The surgical instrument of claim 6, wherein: the overhanging structure is an expanding sliding chute structure.

12. The surgical instrument for removal of uterine cancerous vaginal canal of claim 9, wherein: the outer diameter of the binding band in a winding state is smaller than the outer diameter of the outer pipe, the width of the binding band is smaller than the distance from the inner end face of the expansion unit to the inner end face of the rotating pipe, and the binding band is axially stopped on the outer pipe; while the diameter of the expansion unit in the unexpanded state is smaller than the outer diameter of the outer tube.

13. The surgical instrument for removal of uterine cancerous vaginal canal of claim 9, wherein: the diameter of the expansion unit in an unexpanded state is the same as the outer diameter of the outer tube.

14. The surgical instrument for removal of uterine cancerous vaginal canal of claim 9, wherein: the handle is abutted against the outer end of the rotating tube and assembled at the outer end of the shaft tube.

15. The surgical instrument for removal of uterine cancerous vaginal canal of claim 1, characterized in that: the cutting unit position is apart from 2cm in the central siphon, just fixed unit set up in the central siphon of 2cm within range.

16. The surgical instrument for removal of uterine cancerous vaginal canal of claim 1, characterized in that: the uterine manipulator further comprises a uterine lifting rod, wherein the uterine lifting rod is arranged in the inner cavity of the shaft tube and is in transmission connection with a knob screw arranged at the outer end of the shaft tube, and the uterine lifting rod is used for extending out or retracting into the inner end face of the shaft tube along with the rotation of a knob.

17. The surgical instrument of claim 16, wherein: the inner section of the uterus lifting rod is provided with a size mark.

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