CN214017656U

CN214017656U - Medical abdominal cavity dilator

Info

Publication number: CN214017656U
Application number: CN202022595645.8U
Authority: CN
Inventors: 胡海宏
Original assignee: Dongguan Jinghong Plastic Mould Co ltd
Current assignee: Dongguan Jinghong Plastic Mould Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-08-24
Anticipated expiration: 2030-11-11

Abstract

The utility model discloses a medical abdominal cavity expander, including fixation nut, fixation nut one end fixed mounting has the knob, and the other end is provided with movable axle sleeve, movable axle sleeve is close to fixation nut one end fixed mounting has the handle, and the other end is provided with expanding mechanism, expanding mechanism comprises four umbrella pieces, fixation nut's inside is provided with the swing handle, be provided with the handle core in the swing handle, be provided with drive mechanism in the activity axle sleeve, drive mechanism comprises first movable axle core, second movable axle core and stopper. The utility model discloses simple structure, convenient operation has alleviateed doctor's operating pressure, improves the effect of operation, and four umbrella pieces after the expansion are few with the human contact surface, are favorable to the clearance disinfection work in later stage, can not cause the secondary injury to the patient because the disinfection is not thorough, and four umbrella pieces of this abdominal cavity expander adopt medical macromolecular material preparation simultaneously, can reuse, have saved the resource, have stopped medical resource's waste.

Description

Medical abdominal cavity dilator

Technical Field

The utility model relates to the technical field of medical auxiliary equipment, in particular to a medical abdominal cavity dilator.

Background

At present, before a surgical abdominal cavity operation, an abdominal cavity dilator is required to be used for dilating an abdominal cavity space so as to facilitate the smooth operation. The existing abdominal cavity dilator generally adopts a mode that air is injected into a balloon to dilate an abdominal cavity space. For example, chinese patent with application number CN201310174187.2 provides a closed gasbag expander is taken turns to in back abdominal cavity, including breather pipe and expansion gasbag, the expander is still including self-closing device, comprises one-way air inlet valve, fixed axle, pull rod and acts as go-between from the closing device, and one-way air inlet valve sets up in the breather pipe, and the fixed axle setting is between one-way air inlet valve and expansion gasbag, the pull rod pass the fixed axle setting, can rotate around the fixed axle, the pull rod is connected to the one end that the expansion sacculus was corresponded and is acted as go-between, the other end of pull rod sets up the dog, acts as go-between for elasticity, the other end of acting as go-between is connected to the inner wall of expansion gasbag. Although the balloon dilator can be matched with a doctor to dilate a surgery to improve the surgery effect, the balloon dilator has the following defects: 1. the contact surface of the expansion air bag and the human body is large in the expansion process, so that the later cleaning and disinfection work is not facilitated, the postoperative infection of the patient can be caused due to incomplete disinfection, the life of the patient is threatened, and the secondary injury is caused to the patient; 2. the air inflow of the expansion air bag is inconvenient to control, and in order to increase the safety of the expansion air bag, the expansion air bag needs to be replaced every time the expansion air bag is used, so that the waste of resources is caused; 3. the whole structure of the air bag expander is complex, the operation is inconvenient, and the expanded air bag occupies more space after being expanded, which is not beneficial to the operation of medical personnel.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art. The utility model provides a medical abdominal cavity dilator.

The technical scheme of the utility model for solving the technical problems is to provide a medical abdominal cavity dilator, which comprises a fixed nut, wherein one end of the fixed nut is fixedly provided with a knob, the other end of the fixed nut is provided with a movable shaft sleeve, the movable shaft sleeve is fixedly provided with a handle near one end of the fixed nut, the other end of the movable shaft sleeve is provided with a dilating mechanism, the dilating mechanism is composed of four umbrella pieces, each umbrella piece is provided with a swinging tooth and a pin shaft, two ends of the pin shaft are movably connected with the movable shaft sleeve, four umbrella pieces can be opened and closed by taking the pin shaft as the axis, and the center of the four umbrella pieces forms a diamond-shaped hole when being closed, the inside of the fixed nut is provided with a rotating handle, a handle core is arranged in the rotating handle, a first blind hole is arranged on the handle core, a first internal thread is arranged in the first blind hole, a transmission mechanism is arranged in the movable shaft sleeve, drive mechanism comprises first activity axle core, second activity axle core and stopper, wherein the one end of first activity axle core run through behind the activity axle sleeve with the first internal thread threaded connection on the handle core, the second blind hole has been seted up to the other end, second activity axle core one end is provided with the second external screw thread, the other end is provided with the straight-tooth, and second activity axle core area second external screw thread one end and the second blind hole in second internal thread threaded connection, second activity axle core area straight-tooth one end runs through behind the activity axle sleeve with four umbrella pieces on the pendulum tooth mesh mutually, second activity axle core is close to straight-tooth one end and has been seted up the mounting groove, the stopper is installed in the mounting groove.

Preferably, the fixing nut and the knob are integrally formed, a hollow cavity used for accommodating the rotating handle is formed in the fixing nut, and the cross section of the hollow cavity is in a regular hexagon shape.

Preferably, the knob is designed according to human engineering, the wavy finger position is formed in the knob, a one-to-one type groove is formed in the knob, a through hole is formed in the rotary handle, and the through hole and the type groove are coaxially arranged.

Preferably, the inner wall of the movable shaft sleeve is provided with two limiting grooves along the length direction of the inner wall, the two limiting grooves are symmetrically distributed along the central axis of the movable shaft sleeve, the movable shaft sleeve is provided with four U-shaped grooves near one end of the expansion mechanism, and the inner walls of the U-shaped grooves are provided with pin shaft holes for mounting pin shafts.

Preferably, the first movable shaft core is provided with a first external thread matched with the first internal thread, the thread direction of the first external thread is opposite to that of the second external thread, and the thread pitch of the first external thread is larger than that of the second external thread.

Preferably, the thickness of the limiting block is matched with the width of the limiting groove, and the limiting block can slide back and forth along the length direction of the limiting groove.

Preferably, four umbrella pieces are all made of medical high polymer materials, and each umbrella piece is far away from one end of the swing tooth and is chamfered.

Preferably, the overall shape of the pendulum teeth is fan-shaped.

Compared with the prior art, the utility model provides a pair of medical abdominal cavity expander has following beneficial effect:

1. the utility model has the advantages of simple integral structure, can open four umbrella pieces and be closed through rotatory knob, doctor in the cooperation operation expands the human abdominal cavity, and the operation is simple, four umbrella pieces after the simultaneous expansion are few with the human contact surface, be favorable to the clearance disinfection work in later stage, can not cause the secondary injury to the patient because the disinfection is not thorough, it expands for traditional expansion gasbag, danger coefficient greatly reduced, and contact with abdominal cavity inner wall behind four umbrella piece expansions, there is sufficient expansion space to supply doctor's operation, four umbrella pieces of this abdominal cavity expander adopt medical macromolecular material preparation simultaneously, can reuse, the resource is saved, the waste of medical resource has been stopped.

2. The transmission mechanism in the utility model is composed of a first movable shaft core, a second movable shaft core and a limiting block, wherein the first movable shaft core is driven to rotate by the handle core after the knob is manually rotated, and when the first movable shaft core rotates, a rotating force is provided for the second movable shaft core, meanwhile, the limit block on the second movable shaft core provides resistance to the second movable shaft core, when the resistance is larger than the rotating force, one end of the second movable shaft core with the second external thread moves in and out of the second blind hole of the first movable shaft core, thereby realizing that the second movable shaft core moves back and forth along the length direction of the movable shaft sleeve, the straight teeth on the second movable shaft core are meshed with the swing teeth on the umbrella sheet, when the second movable shaft core moves, the umbrella piece is driven to be opened and closed, the support expansion is realized, the expansion size can be controlled through the amplitude of the rotary knob, the operation is convenient, the operation pressure of a doctor is reduced, and the operation effect is improved.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a block diagram of the present invention;

FIG. 3 is a structural diagram of the movable shaft sleeve of the present invention;

FIG. 4 is a view showing the structure of the handle core of the present invention;

FIG. 5 is a structural diagram of a first movable shaft core of the present invention;

fig. 6 is a structural view of the umbrella sheet of the present invention.

The reference numerals and names in the figures are as follows:

1. fixing a nut; 2. a knob; 3. a movable shaft sleeve; 4. a grip; 5. turning a handle; 6. a shank core; 7. a transmission mechanism; 71. a first movable core; 72. a second movable shaft core; 73. a limiting block; 74. a second blind hole; 75. a second external thread; 76. straight teeth; 77. a second internal thread; 78. mounting grooves; 79. a first external thread; 8. an expansion mechanism; 81. an umbrella sheet; 82. swinging the teeth; 83. a pin shaft; 9. a first blind hole; 10. A first internal thread; 11. a finger position; 12. a profiled groove; 13. a through hole; 14. a limiting groove; 15. a U-shaped groove; 16. the pin shaft hole.

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, the present invention provides an embodiment: a medical abdominal cavity dilator comprises a fixed nut 1, wherein one end of the fixed nut 1 is fixedly provided with a knob 2, the other end of the fixed nut 1 is provided with a movable shaft sleeve 3, when the medical abdominal cavity dilator is implemented, the length value of the fixed nut 1 is between 5cm and 15cm, the fixed nut 1 is in a hollow cylindrical shape, the movable shaft sleeve 3 is close to one end of the fixed nut 1 and is fixedly provided with a handle 4, the other end of the movable shaft sleeve 3 is provided with a dilating mechanism 8, the dilating mechanism 8 comprises four umbrella pieces 81, each umbrella piece 81 is provided with a swinging tooth 82 and a pin shaft 83, two ends of the pin shaft 83 are movably connected with the movable shaft sleeve 3, the four umbrella pieces 81 can be opened and closed by taking the pin shaft 83 as an axis, a diamond hole is formed in the center of the four umbrella pieces 81 when the umbrella pieces are closed, the four umbrella pieces 81 are all made of medical high polymer materials, and one end of each umbrella piece 81, which is far away from the swinging tooth 82, is chamfered, the umbrella piece 81 can be designed to have a reasonable length value according to the actual abdominal cavity operation requirement, because the umbrella piece 81 is directly contacted with the human body, the umbrella piece 81 is made of silicon-plastic high polymer material with better medical performance, no side effect is generated on the human body, meanwhile, the abdominal cavity of the operation is expanded in a mode of supporting four umbrella pieces 81, compared with the traditional expansion bag, the contact surface of the expansion bag with the human body is less, the later cleaning and disinfection are convenient, the safety is better, the inside of the fixed nut 1 is provided with the rotary handle 5, the rotary handle 5 is internally provided with the handle core 6, the handle core 6 is provided with a first blind hole 9, a first internal thread 10 is arranged in the first blind hole 9, the movable shaft sleeve 3 is internally provided with a transmission mechanism 7, the transmission mechanism 7 is composed of a first movable shaft core 71, a second movable shaft core 72 and a limiting block 73, wherein one end of the first movable shaft core 71 penetrates through the movable shaft sleeve 3 and then is in threaded connection with the first internal thread 10 on the handle core 6, the second blind hole 74 has been seted up to the other end, second activity axle core 72 one end is provided with second external screw thread 75, and the other end is provided with straight-tooth 76, and second activity axle core 72 takes second external screw thread 75 one end and the second internal thread 77 threaded connection in the second blind hole 74, second activity axle core 72 takes straight-tooth 76 one end to run through movable shaft sleeve 3 back and meshes with the pendulum tooth 82 on four umbrella pieces 81 mutually, and when straight-tooth 76 moved from top to bottom, the pendulum tooth 82 of meshing drives four umbrella pieces 81 and opens and close, second activity axle core 72 has seted up mounting groove 78 near straight-tooth 76 one end, stopper 73 installs in mounting groove 78, sets up stopper 73's the purpose and aims at preventing that second activity axle core 72 from taking place the displacement when reciprocating, when increasing the stability of product, prevents to cause the secondary injury to the human body when the abdominal cavity operation.

Specifically, fixation nut 1 with 2 integrated into one piece of knob, and set up the cavity that is used for holding swing handle 5 on fixation nut 1, the hexagonal shape is personally submitted in this cavity transversal, when swing handle 5 holds in fixation nut 1's cavity, can drive fixation nut 1 through rotatory knob 2 rotatory, and further drive swing handle 5 rotates, is the hexagonal shape with the cross sectional design of fixation nut 1 cavity for swing handle 5 is more firm.

Specifically, the knob 2 is according to the wavy finger position 11 of ergonomic design, and has still seted up the type groove 12 of one-to-one on the knob 2, set up through-hole 13 on the swing handle 5, through-hole 13 and the coaxial setting in type groove 12 can adopt the bolt to insert through-hole 13 when four umbrella pieces 81 are in the supported state, prevent that human abdominal cavity pressure is too big and lead to four umbrella pieces 81 to reset.

Specifically, two limiting grooves 14, two have been seted up along its length direction to the inner wall of activity axle sleeve 3 the axis symmetric distribution of limiting groove 14 with activity axle sleeve 3, four U-shaped grooves 15 have been seted up near 8 one ends of expanding mechanism to activity axle sleeve 3, four the round pin shaft hole 16 that is used for installing round pin axle 83 is all seted up to the inner wall of U-shaped groove 15.

Specifically, the first movable shaft core 71 is provided with a first external thread 79 matched with the first internal thread 10, the thread direction of the first external thread 79 is opposite to the thread direction of the second external thread 75, the thread pitch of the first external thread 79 is larger than the thread pitch of the second external thread 75, the first external thread 79 is in threaded connection with the first internal thread 10 on the handle core 6, when the handle core 6 rotates, the first movable shaft core 71 can be synchronously driven to rotate, the second internal thread 77 on the first movable shaft core 71 is in threaded connection with the second external thread 75 on the second movable shaft core 72, when the first movable shaft core 71 rotates, a rotating force is given to the second movable shaft core 72, because the limit block 73 and the limit groove 14 limit and prevent the rotation, when the rotating force is larger than the limit resistance of the limit block 73, the second movable shaft core 72 falls off from the second blind hole 74 of the first movable shaft core 71, and moves back and forth along the length direction of the movable shaft sleeve 3, and the straight teeth 76 on the second movable shaft core 72 are meshed with the swing teeth 82 on the four umbrella pieces 81, thereby realizing the opening and closing of the four umbrella pieces 81.

Specifically, the thickness of the limiting block 73 is matched with the width of the limiting groove 14, and the limiting block 73 can slide back and forth along the length direction of the limiting groove 14.

It should be noted that, in the present embodiment, the overall shape of the swing tooth 82 is a fan shape, and the swing tooth 82 is designed to be a fan shape, so that the displacement stroke of the second movable shaft core 72 is reduced, and the opening and closing of the umbrella piece 81 are facilitated.

The utility model also provides a use method of medical abdominal cavity expander, including following step:

the method comprises the following steps: providing the medical abdominal cavity dilator, wherein the four umbrella pieces 81 of the abdominal cavity dilator are inserted into the wound of the abdominal cavity operation;

step two: the knob 2 is rotated forwards and periodically, the knob 2 drives the first movable shaft core 71 to rotate through the handle core 6, and the first movable shaft core 71 drives the second movable shaft core 72 to move back and forth along the length direction of the movable shaft sleeve 3; and

step three: the straight teeth 76 on the second movable shaft core 72 are all meshed with the swing teeth 82 on the four umbrella pieces 81, and the second movable shaft core 72 can unfold the four umbrella pieces 81 to match with a doctor for abdominal operation when moving to one end of the four umbrella pieces 81.

The using method of the abdominal cavity dilator further comprises the steps of reversely and periodically rotating the knob 2 after the abdominal cavity operation is finished, closing the four umbrella pieces 81 and taking out the abdominal cavity dilator.

In the step one, the abdominal cavity dilator is used, and medical lubricating oil needs to be coated on the four umbrella pieces 81, so that the four umbrella pieces 81 are prevented from being too hard to cause secondary damage to a human body.

In conclusion, the medical abdominal cavity dilator has simple structure and convenient operation, reduces the operation pressure of doctors, improves the operation effect, has less contact surface between the four expanded umbrella pieces 81 and the human body, is favorable for the cleaning and disinfection work in the later period, and can not cause secondary injury to patients because of incomplete disinfection; compared with the traditional expansion of an expansion air bag, the danger coefficient is greatly reduced, the four umbrella pieces 81 are in contact with the inner wall of the abdominal cavity after being expanded, enough expansion space is provided for doctors to operate, and meanwhile, the four umbrella pieces 81 of the abdominal cavity expander are made of medical high polymer materials and can be repeatedly utilized, resources are saved, and the waste of medical resources is avoided.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a medical abdominal cavity expander, includes fixation nut (1), its characterized in that: a knob (2) is fixedly installed at one end of the fixed nut (1), a movable shaft sleeve (3) is arranged at the other end of the fixed nut (1), a handle (4) is fixedly installed at one end, close to the fixed nut (1), of the movable shaft sleeve (3), an expansion mechanism (8) is arranged at the other end of the fixed nut, the expansion mechanism (8) is composed of four umbrella pieces (81), a swinging tooth (82) and a pin shaft (83) are arranged on each umbrella piece (81), two ends of the pin shaft (83) are movably connected with the movable shaft sleeve (3), the four umbrella pieces (81) can be opened and closed by taking the pin shaft (83) as an axis, a diamond-shaped hole is formed in the center of each umbrella piece (81) when the four umbrella pieces are closed, a rotating handle (5) is arranged inside the fixed nut (1), a handle core (6) is arranged inside the rotating handle (5), a first blind hole (9) is formed in the handle core (6), and a first internal thread (10) is arranged in the first blind hole (9), a transmission mechanism (7) is arranged in the movable shaft sleeve (3), the transmission mechanism (7) is composed of a first movable shaft core (71), a second movable shaft core (72) and a limiting block (73), wherein one end of the first movable shaft core (71) penetrates through the movable shaft sleeve (3) and then is in threaded connection with a first internal thread (10) on the handle core (6), the other end of the first movable shaft core is provided with a second blind hole (74), one end of the second movable shaft core (72) is provided with a second external thread (75), the other end of the second movable shaft core is provided with straight teeth (76), one end of the second movable shaft core (72) with the second external thread (75) is in threaded connection with a second internal thread (77) in the second blind hole (74), one end of the second movable shaft core (72) with the straight teeth (76) penetrates through the movable shaft sleeve (3) and then is meshed with swing teeth (82) on four umbrella pieces (81), one end of the second movable shaft core (72) close to the straight teeth (76) is provided with a mounting groove (78), the limiting block (73) is installed in the installation groove (78).

2. The medical abdominal dilator of claim 1, wherein: the fixing nut (1) and the knob (2) are integrally formed, a hollow cavity used for containing the rotating handle (5) is formed in the fixing nut (1), and the cross section of the hollow cavity is in a regular hexagon shape.

3. The medical abdominal dilator of claim 1, wherein: the knob (2) is according to wavy finger position (11) of ergonomic design, and has still seted up type groove (12) of one-to-one on knob (2), through-hole (13) have been seted up on swing handle (5), through-hole (13) and type groove (12) coaxial setting.

4. The medical abdominal dilator of claim 1, wherein: two spacing grooves (14) have been seted up along its length direction to the inner wall of activity axle sleeve (3), two spacing groove (14) are with the axis symmetric distribution of activity axle sleeve (3), four U-shaped grooves (15), four have been seted up near expanding mechanism (8) one end in activity axle sleeve (3) the round pin shaft hole (16) that are used for installing round pin axle (83) are all seted up to the inner wall of U-shaped groove (15).

5. The medical abdominal dilator of claim 1, wherein: the first movable shaft core (71) is provided with a first external thread (79) matched with the first internal thread (10), the thread direction of the first external thread (79) is opposite to that of the second external thread (75), and the thread distance of the first external thread (79) is larger than that of the second external thread (75).

6. The medical abdominal dilator of claim 1, wherein: the thickness of the limiting block (73) is matched with the width of the limiting groove (14), and the limiting block (73) can slide back and forth along the length direction of the limiting groove (14).

7. The medical abdominal dilator of claim 1, wherein: four umbrella pieces (81) all adopt medical macromolecular material preparation, and every umbrella piece (81) are kept away from pendulum tooth (82) one end and are gone the chamfer setting.

8. The medical abdominal dilator of claim 1, wherein: the overall shape of the swing tooth (82) is fan-shaped.