CN212466064U

CN212466064U - Dilator for uterine resection

Info

Publication number: CN212466064U
Application number: CN202020476706.6U
Authority: CN
Inventors: 宋侃
Original assignee: Dalian Rongxin Medical Instrument Co ltd
Current assignee: Dalian Rongxin Medical Instrument Co ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2021-02-05
Anticipated expiration: 2030-04-03

Abstract

The utility model relates to the technical field of medical equipment, concretely relates to dilator is resected to uterus, establish the outer tube outside the well cover including interior sleeve pipe, the well sleeve pipe and the activity cover that establish outside the interior sleeve pipe at interior sleeve pipe rear end including interior sleeve pipe, fixing, well sheathed tube length is greater than the length of outer tube and is less than interior sheathed tube length, the internal diameter of interior sleeve pipe, well sleeve pipe and outer tube is 10 mm, 15 mm and 18 mm respectively, the external diameter of interior sleeve pipe, well sleeve pipe and outer tube is 15 mm, 18 mm and 20 mm respectively, interior sheathed tube outer wall rear end vertical fixation has the positioning screw bolt, the spiro union has fastening nut on the positioning screw bolt, the first bayonet socket that supplies the positioning screw bolt to pass through is seted up to well sheathed tube outer wall rear end, the second bayonet socket that supplies the positioning screw bolt to pass through is seted up to the outer wall rear end of outer tube. The dilator has simple structure and convenient use, and greatly improves the operation efficiency.

Description

Dilator for uterine resection

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to hysterectomy expander.

Background

The electric hysterectomy device is a gynecological surgical instrument consisting of a plurality of products, the product consists of a handheld motor, a rotary cutter tube, a uterine manipulator, a uterine puncture needle, uterine graspers, myoma drills, knot pushers, strippers, puncture sleeves, measuring rods, guide rods, dilators, cervical clamps and converters, is matched with a laparoscope, and is mainly suitable for operations such as excision of uterus and hysteromyoma. The operation mode has the advantages of less pain of patients and quick postoperative recovery. The operation usually selects four incisions on the navel and two sides of the navel of a patient, each incision is about 1 to 2 centimeters, a puncture outfit is firstly inserted into the abdominal cavity through the incision, then a guide rod is inserted into the puncture outfit, the puncture outfit is pulled out after the insertion is finished, a dilator is inserted into the guide rod, the dilator is slowly inserted into and expands the operation incision, the puncture outfit is pulled out after the expansion is finished, a puncture cannula is inserted into the abdominal cavity through the guide rod, and finally the guide rod is pulled out, namely, a passage for the operation instrument to pass in and out of the abdominal cavity from the outside is established through the puncture cannula.

Because the currently used puncture cannula generally has three models of phi 15 mm, phi 18 mm and phi 20 mm, the currently used dilators in hysterectomy also have three models, namely, phi 10/phi 15 mm, phi 10/phi 18 mm and phi 10/phi 20 mm, in the practical use process, before the puncture cannula of the phi 18 mm is inserted, the dilators of the phi 10/phi 15 mm and the phi 10/phi 18 mm need to be sequentially used for dilating the incision, and before the puncture cannula of the phi 20 mm is inserted, the dilators of the phi 10/phi 15 mm, the phi 10/phi 18 mm and the phi 10/phi 20 mm need to be sequentially used for dilating the incision, so that the operation is complicated and the surgical efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that above-mentioned exists, designed a uterus excision expander, this expander simple structure, convenient to use improves operation efficiency greatly.

In order to realize the technical purpose, reach above-mentioned technological effect, the utility model discloses a realize through following technical scheme:

a hysterectomy dilator comprises an inner sleeve, a tube seat fixed at the rear end of the inner sleeve, a middle sleeve movably sleeved outside the inner sleeve and an outer sleeve movably sleeved outside the middle sleeve, wherein the length of the middle sleeve is greater than that of the outer sleeve and smaller than that of the inner sleeve, the front ends of the inner sleeve, the middle sleeve and the outer sleeve are all conical openings, the inner diameters of the inner sleeve, the middle sleeve and the outer sleeve are respectively 10 mm, 15 mm and 18 mm, the outer diameters of the inner sleeve, the middle sleeve and the outer sleeve are respectively 15 mm, 18 mm and 20 mm, a positioning stud is vertically fixed at the rear end of the outer wall of the inner sleeve, a fastening nut is screwed on the positioning stud, a first bayonet for the positioning stud to pass through is formed at the rear end of the outer wall of the middle sleeve, and the first bayonet comprises a first insertion section along the length direction of the middle sleeve and a first locking section along the circumferential direction of the middle sleeve, the second bayonet socket that supplies the locating stud to pass through is seted up to the outer wall rear end of outer tube, the second bayonet socket includes along outer tube length direction's second insertion section and along outer tube circumference second locking section.

Further, the lengths of the inner sleeve, the middle sleeve and the outer sleeve are respectively 130 mm, 110 mm and 100 mm.

Furthermore, clearance fit is formed between the inner sleeve and the middle sleeve and between the middle sleeve and the outer sleeve.

Furthermore, the widths of the first bayonet and the second bayonet are both larger than the diameter of the positioning stud and smaller than the outer diameter of the fixing nut, and the lengths of the first insertion section and the second insertion section are equal to the distance between the positioning stud and the pipe seat.

Furthermore, the inner sleeve, the tube seat, the positioning stud, the fixing nut, the middle sleeve and the outer sleeve are all made of medical-grade stainless steel.

Further, the inner sleeve and the pipe seat are integrally formed, and the inner sleeve and the positioning stud are fixed through welding.

The utility model has the advantages that:

the dilator has a simple structure and comprises an inner sleeve, a middle sleeve and an outer sleeve, the dilator is convenient to use, before the puncture sleeve with the diameter of 18 mm needs to be inserted, the middle sleeve is sleeved on the inner sleeve and is fixed through a fixing nut, the assembled dilator is inserted into the puncture sleeve with the diameter of 18 mm, then the dilator and the puncture sleeve with the diameter of 18 mm are inserted into a guide rod together, the dilator is slowly inserted into and expands a surgical opening, the puncture sleeve with the diameter of 18 mm is inserted into the puncture sleeve with the diameter of 18 mm, the dilator and the guide rod are pulled out after the puncture sleeve with the diameter of 18 mm is inserted into the puncture sleeve with the diameter of 18 mm, namely, the establishment of the puncture sleeve with the diameter of 18 mm and an intra-cavity surgical channel is completed, the middle sleeve and the outer sleeve are sequentially sleeved on the inner sleeve and are fixed through the fixing nut before the puncture sleeve with the diameter of 20 mm is inserted into the puncture sleeve with the diameter of 20 mm, then the dilator and the puncture sleeve with the diameter of 20 mm, the dilator is slowly inserted into the surgical opening and is expanded, the puncture cannula with the diameter of 20 mm is inserted, the dilator and the guide rod are pulled out after the puncture cannula with the diameter of 20 mm is inserted, and then the establishment of the puncture cannula with the diameter of 20 mm and the intra-cavity surgical channel is completed, the operation is convenient, the dilators with different models are not required to be used for dilating the surgical incision in sequence, and the surgical efficiency is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a sectional view of the overall structure of the present invention;

fig. 2 is a schematic view of the external structure of the inner sleeve according to the present invention;

fig. 3 is a schematic view of the external structure of the middle sleeve of the present invention;

FIG. 4 is a schematic view of the outer tube of the present invention;

fig. 5 is a sectional view taken along the line a-a of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-inner sleeve, 11-positioning stud, 12-fixing nut, 2-tube seat, 3-middle sleeve, 4-outer sleeve, 5-first bayonet, 51-first insertion section, 52-first locking section, 6-second bayonet, 61-second insertion section and 62-second locking section.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, a hysterectomy dilator comprises an inner sleeve 1, a tube seat 2 fixed at the rear end of the inner sleeve 1, a middle sleeve 3 movably sleeved outside the inner sleeve 1, and an outer sleeve 4 movably sleeved outside the middle sleeve 3, wherein the inner sleeve 1, the tube seat 2, a positioning stud 11, a fixing nut 12, the middle sleeve 3 and the outer sleeve 4 are all made of medical-grade stainless steel materials, and are convenient to sterilize and reuse. The inner sleeve 1 and the tube seat 2 are integrally formed, and the inner sleeve 1 and the positioning stud 11 are fixed through welding. The inner sleeve 1 and the middle sleeve 3 and the outer sleeve 4 are in clearance fit. The length of the middle sleeve 3 is greater than that of the outer sleeve 4 and less than that of the inner sleeve 1, wherein the lengths of the inner sleeve 1, the middle sleeve 3 and the outer sleeve 4 are 130 mm, 110 mm and 100 mm respectively. The front ends of the inner sleeve 1, the middle sleeve 3 and the outer sleeve 4 are all tapered openings, so that the inner sleeve 1, the middle sleeve 3 and the outer sleeve 4 can conveniently enter body tissues, the inner diameters of the inner sleeve 1, the middle sleeve 3 and the outer sleeve 4 are respectively 10 mm, 15 mm and 18 mm, and the outer diameters of the inner sleeve 1, the middle sleeve 3 and the outer sleeve 4 are respectively 15 mm, 18 mm and 20 mm.

The outer wall rear end of interior sleeve pipe 1 is fixed with positioning stud 11 perpendicularly, the spiro union has fastening nut 12 on positioning stud 11, well sleeve pipe 1's outer wall rear end is seted up and is supplied positioning stud 11 to pass through first bayonet socket 5, first bayonet socket 5 includes along well sleeve pipe length direction's first section 51 of inserting and along well sleeve pipe circumference's first locking section 52, the second bayonet socket 6 that supplies positioning stud 11 to pass through is seted up to the outer wall rear end of outer tube 4, second bayonet socket 6 includes along outer sleeve pipe length direction's second section 61 of inserting and along outer tube circumference's second locking section 62. The widths of the first bayonet 5 and the second bayonet 6 are both larger than the diameter of the positioning stud 11 and smaller than the outer diameter of the fixing nut 12, and the lengths of the first insertion section 51 and the second insertion section 61 are equal to the distance between the positioning stud 11 and the pipe seat 2.

Sleeving the middle sleeve 3 on the inner sleeve 1, aligning a first entering section 51 of the first bayonet 5 at the rear end of the middle sleeve 3 with the positioning stud 11 in the sleeving process until the first entering section 51 is completely inserted into the positioning stud 11, then rotating the middle sleeve 3 to enable the positioning stud 11 to enter the first locking section 52, and then screwing the fixing nut 12 to fix the middle sleeve 3 on the inner sleeve 1, wherein the inner diameter of the assembled dilator is 10 mm, the outer diameter is 18 mm, and the surgical incision can be dilated before the puncture sleeve with the diameter of phi 18 mm is inserted; when a puncture cannula with the diameter of 20 mm needs to be inserted, the middle cannula 3 and the outer cannula 4 are sequentially sleeved on the inner cannula 1, the positioning stud 11 enters the first locking section 52 on the middle cannula 3 and the second locking section 62 on the outer cannula 4, finally the fixing nut 12 is screwed to fix the middle cannula 3 and the outer cannula 4 on the inner cannula 1, and at this time, the inner diameter of the assembled dilator is 10 mm, and the outer diameter is 20 mm.

When in use, before the puncture cannula with the diameter of 18 mm needs to be inserted, the middle cannula 3 and the inner cannula 1 are assembled, the assembled dilator is inserted into the puncture cannula with the diameter of 18 mm, then the dilator and the puncture cannula with the diameter of 18 mm are inserted into the guide rod together, the dilator is slowly inserted, the inner cannula 1 and the middle cannula 3 on the dilator sequentially enlarge the surgical opening in the insertion process, the puncture cannula with the diameter of 18 mm is inserted into the abdominal cavity through the dilated channel, the dilator and the guide rod are pulled out after the puncture cannula with the diameter of 18 mm is inserted, namely, the establishment of the puncture cannula with the diameter of 18 mm and the intra-cavity surgical channel is completed, the middle cannula 3, the outer cannula 4 and the inner cannula 1 are assembled before the puncture cannula with the diameter of 20 mm is inserted, the assembled dilator is inserted into the puncture cannula with the diameter of 20 mm, then the dilator and the puncture cannula with the diameter of 20 mm are inserted into the guide rod together, the dilator is slowly inserted, in the insertion process, the inner sleeve 1, the middle sleeve 3 and the outer sleeve 4 on the dilator sequentially enlarge the surgical opening, the puncture sleeve with the diameter of 20 mm enters the abdominal cavity through the expanded channel, the dilator and the guide rod are pulled out after the puncture sleeve with the diameter of 20 mm is inserted, the establishment of the puncture sleeve with the diameter of 20 mm and the intra-cavity surgical channel is completed, if the puncture sleeve with the diameter of 15 mm needs to be inserted, the inner sleeve 1 can be directly inserted into the puncture sleeve with the diameter of 15 mm, then the puncture sleeve and the guide rod are inserted into the abdominal cavity together through the guide rod, and the inner sleeve 1 and the guide rod are taken out after the insertion. The dilator has the advantages of simple structure, convenience in operation, no need of sequentially dilating the incision of the operation by using dilators of different models, time saving and great improvement of operation efficiency.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should be able to make changes, alterations, additions or substitutions within the scope of the present invention.

Claims

1. A hysterectomy dilator, comprising: the positioning device comprises an inner sleeve, a tube seat fixed at the rear end of the inner sleeve, a middle sleeve movably sleeved outside the inner sleeve and an outer sleeve movably sleeved outside the middle sleeve, wherein the length of the middle sleeve is greater than that of the outer sleeve and is smaller than that of the inner sleeve, the front ends of the inner sleeve, the middle sleeve and the outer sleeve are all conical openings, the inner diameters of the inner sleeve, the middle sleeve and the outer sleeve are respectively 10 mm, 15 mm and 18 mm, the outer diameters of the inner sleeve, the middle sleeve and the outer sleeve are respectively 15 mm, 18 mm and 20 mm, the rear end of the outer wall of the inner sleeve is vertically fixed with a positioning stud, a fastening nut is screwed on the positioning stud, the rear end of the outer wall of the middle sleeve is provided with a first bayonet for a positioning stud to pass through, the first bayonet comprises a first insertion section along the length direction of the middle sleeve and a first locking section along the circumferential direction of the middle sleeve, the rear end of the outer wall of the outer sleeve is provided, the second bayonet comprises a second insertion section along the length direction of the outer sleeve and a second locking section along the circumferential direction of the outer sleeve.

2. A hysterectomy dilator according to claim 1 wherein: the lengths of the inner sleeve, the middle sleeve and the outer sleeve are respectively 130 mm, 110 mm and 100 mm.

3. A hysterectomy dilator according to claim 1 wherein: and the inner sleeve and the middle sleeve and the outer sleeve are in clearance fit.

4. A hysterectomy dilator according to claim 1 wherein: the width of the first bayonet and the width of the second bayonet are both larger than the diameter of the positioning stud and smaller than the outer diameter of the fixing nut, and the length of the first inserting section and the length of the second inserting section are equal to the distance between the positioning stud and the pipe seat.

5. A hysterectomy dilator according to claim 1 wherein: the inner sleeve, the tube seat, the positioning stud, the fixing nut, the middle sleeve and the outer sleeve are all made of medical-grade stainless steel.

6. A hysterectomy dilator according to claim 5 wherein: the inner sleeve and the pipe seat are integrally formed, and the inner sleeve and the positioning stud are fixed through welding.